PICK-UP SELECTOR FOR PULSE SIGN ALTERNATIVE CURRENT Russian patent published in 1997 - IPC

FIELD: electrical engineering. SUBSTANCE: selector has amplifier 2 and instrument shunt 1 for current measuring connected in series to sign-alternative current circuit, signal magnitude extraction unit 3 and two diodes 4 and 5. Amplifier 2 input is connected with potential terminals of shunt 1 and it output is connected to anode of first diode 4, cathode second diode 5 and input of unit 3 for signal magnitude extraction. Unit 3 output is connected to first output of pick-up selector, which second output is connected to cathode of first diode 4, but third output of pick-up selector is connected to anode of second diode 5. EFFECT: better design for specific electric circuit like storage battery charger. 1 dwg