CN102183977A - Temperature-controllable resistor and temperature-self-controlling resistance device - Google Patents
Temperature-controllable resistor and temperature-self-controlling resistance device Download PDFInfo
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- CN102183977A CN102183977A CN2011100340090A CN201110034009A CN102183977A CN 102183977 A CN102183977 A CN 102183977A CN 2011100340090 A CN2011100340090 A CN 2011100340090A CN 201110034009 A CN201110034009 A CN 201110034009A CN 102183977 A CN102183977 A CN 102183977A
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Abstract
The invention provides a temperature-controllable resistor and a temperature-self-controlling resistance device. The temperature-controllable resistor comprises a resistor and a heating plate, wherein the resistor comprises a resistor shell, the heating plate is a flexible electric hot plate and adhered to the external surface of the resistor shell, the inside of the flexible electric hot plate is provided with metal foil heater strips, the heater strips are arranged in a loop mode, and the flexible electric hot plate is provided with an electrical connection end. When the temperature-controllable resistor provided by the invention is used, the constant temperature of the resistor can be realized without putting the temperature-controllable resistor in a temperature controlling tank, thereby reducing the application cost of the temperature-controllable resistor, and enhancing the stability of the temperature-controllable resistor; and the volume of the temperature-self-controlling resistance device provided by the invention is greatly reduced and is only several times that of the resistor in the temperature-controllable resistor, so that the temperature-self-controlling resistance device can carry out precise adjustment on the temperature of the temperature-controllable resistor, thereby realizing the high-stability control temperature and guaranteeing the requirement of the resistor on stable temperature.
Description
Technical field
The present invention relates to a kind of novel resistor, particularly a kind of controllable temperature resistor reaches from the temperature control resistance device.Describedly can realize high accuracy temperature control from the temperature control resistance device, described high precision is meant temperature-controlled precision at 0.01 ℃, promptly design temperature up and down between the wave zone≤0.01 ℃.
Background technology
Because resistance has temperature coefficient, therefore the value of resistance can change under Temperature Influence, so usually resistance being placed in thermostatic oil bath or the temperature control jar makes it avoid the interference of ambient temperature, the heat insulation heat-insulation layer of the outer setting of temperature control jar wherein, and come temperature in the control circuit temperature control jar by connecting temperature controller.Existing temperature controller mainly comprises temperature-adjusting circuit, its structural representation as shown in Figure 1, temperature-adjusting circuit comprises successively the power supply U that connects
S, resistance bridge (R
1, R
2, R
3And R
T), amplifier IC, power amplifier 1 and heater block 2, by thermistor R is set in resistance bridge
T, and with this thermistor R
TBe arranged in the circuit controling temperature jar 4 and the outside surface that heater block 2 is arranged at circuit controling temperature jar 4, the structural representation of existing circuit controling temperature jar as shown in Figure 2 and insulation jar, among Fig. 2, circuit controling temperature jar 4 is arranged in the insulation jar 3 of sealing, insulation jars 3 is generally the pressing mold jar that cemented seam can that high-density sponge mills or polystyrene are made, wherein, 4 corresponding respectively linking to each other of b, the c among Fig. 1 and Fig. 2, d and e.When the temperature in the circuit controling temperature jar 4 is lower than design temperature, thermistor R
TChanged by its resistance of Temperature Influence, cause having voltage difference between a, the b of resistance bridge at 2, it is the electric bridge imbalance, make the input end of amplifier IC have differential signal, and then go to provide electric current after by power amplifier 1 amplifier IC output signal being amplified to heater block 2, to improve the temperature in the circuit controling temperature jar 4, when the temperature in the circuit controling temperature jar 4 reaches the temperature of setting, utilize thermistor R
TTemperature sense, the resistance bridge balance, the output current that makes power amplifier 1 in the temperature controller is zero, above process constantly circulates, and makes that the temperature in the circuit controling temperature jar 4 can be controlled at restricted portion.Problem wherein is less by the volume of the resistance of temperature control, but the volume of temperature control jar is bigger, add the insulation jar of thicker high-density sponge or polystyrene material, make a little resistance volume after carrying out temperature control of volume will increase tens times or tens times, use extremely inconvenience, be not suitable for move mode substantially, its use as measurement standard is very limited, if the sensitivity and the heat insulation effect of temperature-adjusting circuit are undesirable, then be difficult to satisfy the constant temperature requirement of resistance.
Summary of the invention
The present invention is directed to the defective or the deficiency that exist in the prior art, but a kind of constant temperature resistor is provided, need not in use to place it in the constant temperature that just can realize resistance in the temperature control jar, reduced use cost, strengthened its stability; The invention still further relates to from the temperature control resistance device, the volume of this device reduces significantly, only is several times of resistance in the controllable temperature resistor, can accurately regulate the temperature of controllable temperature resistor, reach the high stability temperature control, guaranteed the requirement of resistance temperature stabilization.Describedly can realize high accuracy temperature control from the temperature control resistance device, described high precision is meant temperature-controlled precision at 0.01 ℃, promptly design temperature up and down between the wave zone≤0.01 ℃.
Technical scheme of the present invention is as follows:
A kind of controllable temperature resistor, it is characterized in that, comprise resistance and heating plate, described resistance comprises the resistance housing, described heating plate is flexible electrical hot plate and the outside surface that is fitted in described resistance housing, described flexible electrical hot plate is built-in with metal forming electric heating silk ribbon, and described electric heating silk ribbon is loop line to be arranged, and described flexible electrical hot plate is provided with electric connecting terminal.
The outside surface of described flexible electrical hot plate adopts membraneous material, and described membraneous material is the bright or translucent insulation film of full impregnated.
The outside surface of described flexible electrical hot plate adopts silicon rubber.
On the surface of described resistance housing or in the housing of described resistance housing or the inner chamber of described resistance housing be provided with the thermistor rest, described thermistor is used for the temperature of temperature-adjusting circuit and surveys.
Described resistance is measuring resistance, and described controllable temperature resistor is wrapped in the thermal insulator.
A kind of from the temperature control resistance device, it is characterized in that, comprise above-mentioned controllable temperature resistor, also comprise the temperature-adjusting circuit that links to each other with the controllable temperature resistor, described temperature-adjusting circuit comprises power supply, resistance bridge, amplifier and the power amplifier that connects successively, described resistance bridge comprises thermistor, and described thermistor is arranged on the surface of the resistance housing in the controllable temperature resistor or in the housing of described resistance housing or the inner chamber of described resistance housing, the electric connecting terminal of described heating plate connects the output terminal of power amplifier.
Described thermistor is two that are connected in series, and described two thermistors all are arranged on the surface of resistance housing or in the housing of described resistance housing or the inner chamber of described resistance housing.
Two thermistors are 25k Ω in the resistance of temperature controlling point, and other resistance of resistance bridge is 50k Ω; Described power amplifier is a triode, and the base stage of described triode connects the output terminal of amplifier, and emitter connects the electric connecting terminal of heating plate, and collector connects positive source.
Described power supply adopts battery supply or AC rectification power supply.
Also comprise the vacuum heat-preserving jar, described controllable temperature resistor is arranged in the vacuum heat-preserving jar.
Technique effect of the present invention is as follows:
The controllable temperature resistor that the present invention relates to, by outside surface applying heating plate at the resistance housing, the temperature of resistance can be remained on and measure needed temperature range, and maintenance temperature constant, thereby satisfy the constant temperature requirement of controllable temperature resistor, and this controllable temperature resistor in use, need not to place it in the constant temperature that just can realize resistance in the temperature control jar, reduce use cost, strengthened its stability.Heating plate is chosen as electric hot plate with softness characteristics, it can be fitted in the outside surface of resistance housing, realize closely contacting fully with heated resistance, like this, heat can be delivered to the resistance surrounding environment quickly and evenly, the flexible electrical hot plate is built-in with metal forming electric heating silk ribbon, this electric heating silk ribbon is loop line and arranges, can reduce electromagnetic interference (EMI), the housing of resistance is generally all-metal, can shield remaining electromagnetic interference (EMI) fully after the ground connection, the outside surface of flexible electrical hot plate can adopt various ways such as membraneous material or silicon rubber.Heating plate is provided with electric connecting terminal, makes the controllable temperature resistor can be connected in the control circuit by this electric connecting terminal in use, realizes the temperature control to the controllable temperature resistor.
The present invention relates to from the temperature control resistance device, the controllable temperature resistor that comprises temperature-adjusting circuit and the present invention relates to, electric connecting terminal by the heating plate in the controllable temperature resistor is connected in the temperature-adjusting circuit, temperature-adjusting circuit comprises power supply, resistance bridge, amplifier and the power amplifier that connects successively, described resistance bridge comprises thermistor, described thermistor is arranged on the surface of the resistance housing in the controllable temperature resistor or in the housing of described resistance housing or the inner chamber of described resistance housing, the electric connecting terminal of described heating plate connects the output terminal of power amplifier.In temperature-adjusting circuit, resistance bridge comprises thermistor, can adopt two thermistor tandem compound thermometrics, both improved sensitivity of thermometry, compensated again because two temperature control variations that the possible drift of thermistor causes, make temperature control reach higher precision, this thermistor is arranged on the surface of the resistance housing in the controllable temperature resistor or in the housing of described resistance housing or the inner chamber of described resistance housing, thermistor is under the situation of temperature variation, the resistance bridge impedance unbalance that measures, make the input end of amplifier have differential signal, further the control power amplifier provides electric current for the heating plate of the outside surface applying that is arranged at resistance housing in the controllable temperature resistor, make its heating, temperature sense by thermistor, the output of Control current, finally make the temperature of controllable temperature resistor to be controlled at and need restricted portion, and need not to be provided with the bigger temperature control jar of volume ratio, and the insulation jar of thicker high-density sponge or polystyrene material, the present invention can carry out the fine adjustments of temperature from the temperature control resistance device to the controllable temperature resistor under very little temperature variation, realize the high stability temperature control.This temperature-adjusting circuit makes that the temperature-controlled precision in the controllable temperature resistor is 0.01 ℃, promptly design temperature up and down between the wave zone≤0.01 ℃.The controllable temperature resistor is arranged in the vacuum heat-preserving jar, the vacuum heat-preserving jar is owing to have vacuum layer so can play the effect of vacuum heat-insulation, it is the important leverage of controllable temperature resistor temperature stabilization, cooperate temperature-adjusting circuit work, make that the temperature fluctuation range of controllable temperature resistor is little, between the wave zone≤0.01 ℃, thereby reach effect to the insulation of controllable temperature resistor high accuracy temperature control, guaranteed the requirement of resistance to temperature stabilization, and volume reduces significantly, volume only is 0.007 cubic metre, only is several times of controllable temperature resistor.
Description of drawings
Fig. 1 is the existing structural representation that is used for the temperature controller of circuit controling temperature jar.
Fig. 2 is the structural representation of existing circuit controling temperature jar and insulation jar.
Fig. 3 is the structural representation of controllable temperature resistor of the present invention.
Fig. 4 a and Fig. 4 b are respectively the film heating plate of bar shaped and the structural representation of the film heating plate of circle.
Fig. 5 is the preferred structure synoptic diagram from the temperature control resistance device.
Fig. 6 is the insulation jar of the present invention in the temperature control resistance device and first kind of preferred structure synoptic diagram of controllable temperature resistor.
Fig. 7 is the insulation jar of the present invention in the temperature control resistance device and second kind of preferred structure synoptic diagram of controllable temperature resistor.
Embodiment
The present invention will be described below in conjunction with accompanying drawing.
The present invention relates to a kind of controllable temperature resistor, its structural representation as shown in Figure 3, comprise measuring resistance 6 and heating plate 7, heating plate 7 is the flexible electrical hot plate, be that it has softness characteristics so can fit tightly in the housing outer surface of measuring resistance 6, housing outer surface has herein comprised the side surface and the bottom surface of housing, heating plate 7 is provided with two electric connecting terminals 8,9, make the controllable temperature resistor can be connected in the circuit that is measured by these two electric connecting terminals in use, heating plate 7 can be delivered to heat on the measuring resistance 6 when work rapidly and efficiently, equably.
Controllable temperature resistor of the present invention can also be wrapped in the thermal insulator, to realize constant temperature better, this controllable temperature resistor in use need not to place it in the constant temperature that just can realize resistance in the temperature control jar, reduce use cost, and strengthened its stability.
The invention still further relates to a kind of from the temperature control resistance device, its preferred structure synoptic diagram as shown in Figure 5, comprise temperature-adjusting circuit and controllable temperature resistor shown in Figure 3, the electric connecting terminal 8,9 by the heating plate in the controllable temperature resistor is connected in the temperature-adjusting circuit, and temperature-adjusting circuit comprises the power supply U that connects successively
S, resistance bridge (R
1, R
2, R
3And R
T), amplifier IC and triode VT, wherein, the power supply U of power supply
SCan adopt battery supply or AC rectification power supply, as powering by civil power or the less Ni-MH battery of volume, then should can move and the mode of carrying is used, and can fully satisfy the characteristic requirement of measuring resistance at the journey temperature control as measurement standard from the temperature control resistance device; R in the resistance bridge
1, R
2And R
3The resistance of three resistance all is preferably 50k Ω, R
TBe thermistor (the thermistor R that specifically comprises two series connection
T1And R
T2), thermistor R
T1And R
T2Resistance all be preferably 25k Ω at temperature controlling point, the R in the resistance bridge
1And R
2Series connection, and R
3And R
TSeries connection back all with power supply U
SParallel connection, and R
1And R
3Be oppositely arranged R
2And R
TBe oppositely arranged; The reverse input end of amplifier IC and R
1And R
2Between the A point link to each other the positive input of amplifier IC and R
3And R
TBetween the B point link to each other, the output terminal of amplifier IC connects the base stage of triode VT, triode VT is a kind of power amplifier, emitter connects the electric connecting terminal 8 of heating plate 7, collector connects power supply U
SAnodal; The electric connecting terminal 9 of heating plate 7 connects power supply U
SNegative pole (being ground connection).
For realizing the high accuracy temperature control of this controllable temperature resistor, the controllable temperature resistor is linked to each other with temperature-adjusting circuit, thermistor R
T(the thermistor R that comprises series connection
T1And R
T2) be arranged on the surface of shell of the measuring resistance 6 in the controllable temperature resistor or in the housing or the housing inner chamber, the emitter that the electric connecting terminal 8 of heating plate 7 connects as the triode VT of power amplifier, electric connecting terminal 9 connects power supply U
SNegative pole.The controllable temperature resistor principle of work of high accuracy temperature control shown in Figure 5 is: when the temperature of controllable temperature resistor is lower than design temperature, and under the situation of temperature variation, the thermistor R in the temperature-adjusting circuit
TBeing subjected to its resistance of thermoinduction changes, the feasible resistance bridge impedance unbalance that is metered into, be A, 2 of B produce potential difference (PD), it is the electric bridge imbalance, thereby the input end of amplifier IC has differential signal, this difference input has improved conjugated analoging systeming ratio, eliminated common mode interference, and then go to provide electric current after by triode VT amplifier IC output signal being amplified to heating plate 7, because the housing outer surface of measuring resistance 6 is fitted in heating plate 7 and the controllable temperature resistor, so can improve the temperature of measuring resistance 6, when the temperature of measuring resistance 6 reaches the temperature that needs qualification, by thermistor R
TTemperature sense, finally make in the temperature-adjusting circuit output current as the triode VT of power amplifier reduce, make the temperature of measuring resistance 6 can be controlled at restricted portion, and the temperature fluctuation of can drawing up, improve the stability of the measuring resistance 6 in this controllable temperature resistor, make that the temperature-controlled precision of controllable temperature resistor is 0.01 ℃, when needing limiting temperature to be 30 ℃ when the controllable temperature resistor, carry out temperature control by temperature-adjusting circuit and the temperature in the controllable temperature resistor can be controlled at 30 ℃ ± 0.01 ℃, so can reduce temperature deviation, realize the high accuracy temperature control of controllable temperature resistor, can not be subjected to temperature disturbance when making circuit working in the circuit controling temperature jar, satisfy the measurement requirement of accuracy requirement than higher circuit.Two thermistors that series connection is set make thermoinduction sensitiveer, both improved sensitivity of thermometry, compensated again because two temperature control variations that the possible drift of thermistor causes, make temperature control reach higher precision, and stability is also better, temperature sense by thermistor, finally make the temperature of controllable temperature resistor to be controlled at and need restricted portion, and the temperature fluctuation of can drawing up, this temperature-adjusting circuit and controllable temperature resistor cooperating make that the temperature-controlled precision of controllable temperature resistor is 0.01 ℃, promptly design temperature up and down between the wave zone≤0.01 ℃, reduce temperature deviation, can satisfy the measurement requirement of accuracy requirement than higher circuit.
What the present invention relates to also comprises the vacuum heat-preserving jar from the temperature control resistance device, the controllable temperature resistor is arranged in the vacuum heat-preserving jar, because the thermistor R in the temperature-adjusting circuit
T(the thermistor R that comprises series connection
T1And R
T2) be arranged on the surface of shell of the measuring resistance 6 in the controllable temperature resistor or in the housing or the housing inner chamber, so be equivalent to thermistor R
TAlso be arranged in the vacuum heat-preserving jar.
Fig. 6 is insulation jar in the temperature control resistance device and first kind of preferred structure synoptic diagram of controllable temperature resistor.The controllable temperature resistor comprises measuring resistance 6 and heating plate 7, and this moment, heating plate 7 was the silicon rubber heating plate, controllable temperature resistor and thermistor R
T1And R
T2Be arranged in the insulation jar 3 of sealing insulation jar 3 vacuum heat-preserving jars, the thermistor R of series connection for sealing
T1And R
T2The two ends lead can be drawn from the top of insulation jar 3, as 2 corresponding respectively linking to each other of Fig. 5 and the B as shown in Fig. 6, C, the lead that is connected with the electric connecting terminal 8,9 of heating plate 7 is also drawn from the top of insulation jar 3, as 2 corresponding respectively linking to each other of Fig. 5 and the D as shown in Fig. 6, E.The vacuum heat-preserving jar makes that the temperature fluctuation range of controllable temperature resistor is little owing to have vacuum layer so can play the effect of vacuum heat-insulation, thereby reaches the effect to the insulation of controllable temperature resistor temperature control.
Fig. 7 is insulation jar in the temperature control resistance device and second kind of preferred structure synoptic diagram of controllable temperature resistor.The controllable temperature resistor comprises measuring resistance 6 and heating plate 7, and this moment, heating plate 7 was the film heating plate, controllable temperature resistor and thermistor R
T1And R
T2Be arranged in the insulation jar of sealing, this insulation jar is that two uncovered vacuum refills with coating film on glass, 10 mutual fastenings form, the uncovered bore of two vacuum refills is chosen as small one and large one, interlayer in the glass liner wall of vacuum refill 10 is a vacuum, and the fastening position of two vacuum refills 6 is provided with foam carpet 5 makes the insulation jar seal fully.The thermistor R of series connection
T1And R
T2The two ends lead can be drawn from foam carpet 5, as 2 corresponding respectively linking to each other of Fig. 5 and the B as shown in Fig. 7, C, also from foam carpet 5, draw with the lead that the electric connecting terminal 8,9 of heating plate 7 is connected, as 2 corresponding respectively linking to each other of Fig. 5 and the D as shown in Fig. 7, E.Shown in this embodiment from the temperature control resistance device, volume reduces significantly, volume only is 0.007 cubic metre, only is several times of controllable temperature resistor.
Should be pointed out that the above embodiment can make those skilled in the art more fully understand the invention, but do not limit the present invention in any way creation.Therefore; although this instructions has been described in detail the invention with reference to drawings and Examples; but; those skilled in the art are to be understood that; still can make amendment or be equal to replacement the invention; in a word, all do not break away from the technical scheme and the improvement thereof of the spirit and scope of the invention, and it all should be encompassed in the middle of the protection domain of the invention patent.
Claims (10)
1. controllable temperature resistor, it is characterized in that, comprise resistance and heating plate, described resistance comprises the resistance housing, described heating plate is flexible electrical hot plate and the outside surface that is fitted in described resistance housing, described flexible electrical hot plate is built-in with metal forming electric heating silk ribbon, and described electric heating silk ribbon is loop line to be arranged, and described flexible electrical hot plate is provided with electric connecting terminal.
2. controllable temperature resistor according to claim 1 is characterized in that, the outside surface of described flexible electrical hot plate adopts membraneous material, and described membraneous material is the bright or translucent insulation film of full impregnated.
3. controllable temperature resistor according to claim 1 is characterized in that, the outside surface of described flexible electrical hot plate adopts silicon rubber.
4. according to the described controllable temperature resistor of one of claim 1 to 3, it is characterized in that, on the surface of described resistance housing or in the housing of described resistance housing or the inner chamber of described resistance housing be provided with the thermistor rest, described thermistor is used for the temperature of temperature-adjusting circuit and surveys.
5. controllable temperature resistor according to claim 4 is characterized in that, described resistance is measuring resistance, and described controllable temperature resistor is wrapped in the thermal insulator.
6. one kind from the temperature control resistance device, it is characterized in that, comprise the described controllable temperature resistor of one of claim 1 to 4, also comprise the temperature-adjusting circuit that links to each other with the controllable temperature resistor, described temperature-adjusting circuit comprises power supply, resistance bridge, amplifier and the power amplifier that connects successively, described resistance bridge comprises thermistor, described thermistor is arranged on the surface of the resistance housing in the controllable temperature resistor or in the housing of described resistance housing or the inner chamber of described resistance housing, the electric connecting terminal of described heating plate connects the output terminal of power amplifier.
7. according to claim 6ly it is characterized in that from the temperature control resistance device described thermistor is two that are connected in series, described two thermistors all are arranged on the surface of resistance housing or in the housing of described resistance housing or the inner chamber of described resistance housing.
8. according to claim 7ly it is characterized in that from the temperature control resistance device two thermistors are 25k Ω in the resistance of temperature controlling point, other resistance of resistance bridge is 50k Ω; Described power amplifier is a triode, and the base stage of described triode connects the output terminal of amplifier, and emitter connects the electric connecting terminal of heating plate, and collector connects positive source.
9. according to claim 6ly it is characterized in that described power supply adopts battery supply or AC rectification power supply from the temperature control resistance device.
10. it is characterized in that from the temperature control resistance device according to one of claim 6 to 9 is described that also comprise the vacuum heat-preserving jar, described controllable temperature resistor is arranged in the vacuum heat-preserving jar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110034009 CN102183977B (en) | 2011-01-31 | 2011-01-31 | Temperature-controllable resistor and temperature-self-controlling resistance device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110034009 CN102183977B (en) | 2011-01-31 | 2011-01-31 | Temperature-controllable resistor and temperature-self-controlling resistance device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102183977A true CN102183977A (en) | 2011-09-14 |
| CN102183977B CN102183977B (en) | 2013-08-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110034009 Active CN102183977B (en) | 2011-01-31 | 2011-01-31 | Temperature-controllable resistor and temperature-self-controlling resistance device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522176A (en) * | 2011-12-19 | 2012-06-27 | 北京东方计量测试研究所 | Computable AC/DC difference resistor for improving load effect |
| CN104731128A (en) * | 2013-12-24 | 2015-06-24 | 苏州普源精电科技有限公司 | Measuring device with temperature control function |
| CN112285396A (en) * | 2020-10-29 | 2021-01-29 | 北京东方计量测试研究所 | Super-stable standard resistor |
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|---|---|---|---|---|
| US4324258A (en) * | 1980-06-24 | 1982-04-13 | Werner Huebscher | Ultrasonic doppler flowmeters |
| JP2002516596A (en) * | 1996-12-06 | 2002-06-04 | コーニング インコーポレイテッド | Package for temperature-sensitive planar optics |
| CN1635433A (en) * | 2004-12-30 | 2005-07-06 | 山东大学 | Heat-pipe constant-temperature high-precision sampling resistor |
| CN200953099Y (en) * | 2006-04-03 | 2007-09-26 | 李应刚 | Temperature field thermostat |
-
2011
- 2011-01-31 CN CN 201110034009 patent/CN102183977B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4324258A (en) * | 1980-06-24 | 1982-04-13 | Werner Huebscher | Ultrasonic doppler flowmeters |
| JP2002516596A (en) * | 1996-12-06 | 2002-06-04 | コーニング インコーポレイテッド | Package for temperature-sensitive planar optics |
| CN1635433A (en) * | 2004-12-30 | 2005-07-06 | 山东大学 | Heat-pipe constant-temperature high-precision sampling resistor |
| CN200953099Y (en) * | 2006-04-03 | 2007-09-26 | 李应刚 | Temperature field thermostat |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522176A (en) * | 2011-12-19 | 2012-06-27 | 北京东方计量测试研究所 | Computable AC/DC difference resistor for improving load effect |
| CN102522176B (en) * | 2011-12-19 | 2013-11-13 | 北京东方计量测试研究所 | Computable AC/DC difference resistor for improving load effect |
| CN104731128A (en) * | 2013-12-24 | 2015-06-24 | 苏州普源精电科技有限公司 | Measuring device with temperature control function |
| CN112285396A (en) * | 2020-10-29 | 2021-01-29 | 北京东方计量测试研究所 | Super-stable standard resistor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102183977B (en) | 2013-08-21 |
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