Title: Voltage identification short circuit protection constant current voltage stabilizing circuit
Application Number: 200610016062 Application Date: 2006.09.29
Publication Number: 1949622 Publication Date: 2007.04.18
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H02J7/10;H02H3/08
Applicant(s) Name: Zhengfang Industry Co., Ltd., Tianjin City Address:
Inventor(s) Name: Xing Baisong
Attorney & Agent: lifeng
Abstract:
    The invention is a voltage recognition short-circuit protection constant current voltage stabilizing circuit, where a capacitor C1 is connected in parallel with input end, a resistor R1 is connected with power supply and inverted input end of an operational amplifier F1, and inverted input end of the operational amplifier F1, cophase input end of an operationl amplifier F2 and inverted input end of an operational amplifer F4 are grounded, cophase input end of the F1 and inverted input of the F2 are both connected in between resistors R11 and R12 at output end, the output end of the F1 is connected with inverted input end of an operational amplifier F3, output end of the F2 is connected with inverted input end of the F3, cophase input end of the F3 is connected with inverted input end of the F1, output end of the F3 is connected with base of a triode G2, the cophase input end of the F4 is grounded and the output end of the F4 is connected with emitter of the G2, collector of the G2 is connected with base of a triode G1, emitter of the G1 is connected with input power supply, and collector of the G1 is the output end and a capacitor C3 is connected at the output end. And the invention has characters of small volume, powerful functions, stable performance, simple production process, etc.
Time: 8