CONNECTION FOR PULSE SIGNAL'S SEPARATION FROM RADIOACTIVE RADIATION'S DETECTING PROBES

摘要

The connection consists of a detection probe (1) linked through a connecting line (2) with an operating resistance (R1) and a separation capacitor (C1), from the source (3) for the supply to the detection probe (1), and an optocoupler (OC) to the output of which an evaluation circuit (4) is connected. The second separation capacitor lead (C1) is connected to a pnp transistor (T1) base and a couple of diodes (D1, D2) equivalently connected in series. The second diode (D2) cathode is connected to the transistor (T1) base an emitter of which is linked with the second resistance (R2) the second lead of which is connected with the first diode (D1) anode and a power source (5) positive lead. The transistor (T1) collector is linked to the anode of the optocoupler (OC) light-emitting diode the cathode of which is connected to the negative terminal of the power source (5) and through the second lead (2.2) of the connecting line (2) to the earth lead (1.2) of the detection probe (1).<IMAGE>