DEVICE TESTING CIRCUIT OF STORAGE BATTERY OF DIRECT CURRENT INSTALLATION Russian patent published in 1999 - IPC

FIELD: electrical engineering. SUBSTANCE: device testing circuit of storage battery of direct current installation with rectifying charging aggregate and operating under condition of voltage stabilization by circuit of trickle charge connected to collecting buses has actuating relay with control winding. Make contact of relay is placed in circuit of installation signalling. Device is fitted with n-p- n transistor designed for voltage of collecting buses, its circuit of base incorporates resistor, stabilizer diode and capacitor. Winding of actuating relay and network of resistors and capacitor connected in series are placed in parallel in circuit of collector and emitter is connected to negative bus. Junction emitter-base is shunted with diode in nonconductive direction. EFFECT: enhanced sensitivity of device. 4 dwg