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Publication numberDE2823291 A1
Publication typeApplication
Application numberDE19782823291
Publication date29 Nov 1979
Filing date27 May 1978
Priority date27 May 1978
Publication number19782823291, 782823291, DE 2823291 A1, DE 2823291A1, DE-A1-2823291, DE19782823291, DE2823291 A1, DE2823291A1, DE782823291
InventorsRainer Ing Grad Koch
ApplicantRainer Ing Grad Koch
Export CitationBiBTeX, EndNote, RefMan
External Links: DPMA, Espacenet
Coagulation instrument automatic HF switching circuit - has first lead to potentiometer and second to transistor base
DE 2823291 A1
Abstract
The circuit which automatically switches on the high-frequency current of a coagulation instrument has two leads. The first (1) is connected to a potention-meter (P1), whose other terminal has a 9-volt potential applied to it, while the second (2) is connected via a resistance (R2) to the base of a transistor (T1). A second resistance (R3) connects this lead to the neutral point of the voltage source. The base of the transistor (T1) is earthed via a capacitor (C1), while the +9-volt supply is applied to the collector through a third resistance (R1), and its emitter is earthed. Its collector is connected via a second potentiometer (P2) and a fourth resistance (R4) to the base of a second transistor (T2). The second transistor collector terminal leads via a relay (Rel) and a diode (D1), in parallel, back to the first transistor collector. The connecting point between the second potentiometer and the fourth resistance is earthed via a second capacitor (C2).
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Classifications
International ClassificationA61B18/12
Cooperative ClassificationA61B18/1206, A61B2018/0066, A61B18/12
European ClassificationA61B18/12G, A61B18/12
Legal Events
DateCodeEventDescription
29 Nov 1979OAPRequest for examination filed
10 Jan 1980ODRequest for examination
30 Apr 1980OHWRejection