Title:
POLARITY PROTECTING CIRCUIT
Document Type and Number:
Japanese Patent JPS5889036
Kind Code:
A
Abstract:
Four bipolar transistors are arranged in a bridge configuration and are interconnected with two additional bipolar transistors to provide an efficient polarity guard circuit. The circuit has two output terminals, one of which has a positive polarity regardless of the polarity across two input terminals. The two additional transistors prevent collector to base current from flowing through any of the bridge transistors which may be biased off.
Inventors:
JIYON JIEI TONII
Application Number:
JP19743482A
Publication Date:
May 27, 1983
Filing Date:
November 10, 1982
Export Citation:
Assignee:
MOTOROLA INC
International Classes:
H02H7/20; H02H11/00; H04M19/08; (IPC1-7): H02H7/20; H02H11/00
Attorney, Agent or Firm:
Kugoro Tamamushi