Solid state control circuit for a dual battery power supply

Details Solid state control circuit for a dual battery power supply Solid state control circuit for a dual battery power supply

1990-04-27

1991-12-03

Pellinen, A. D.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Diverse or unlike electrical characteristics

3072471, 307 85, 363 63, H02J 106, H03K 1756

Patent

active

050702530

ABSTRACT:
A solid state latching control circuit for a DC power supply including a pair of series connected DC power sources, such as batteries, which provide both a positive and negative polarity switched supply voltage to a load. A pair of complementary MOSFET transistors are simultaneously rendered conductive and non-conductive by means of the outputs of a latching type of flip-flop circuit comprised of a pair of cross-coupled CMOS NAND gates whose mutually opposite on and off states are switched in response to the operation of a pair of electrical switches, a third CMOS NAND gate and a differentiator circuit coupled to one of the flip-flop inputs, and an R-C charging and discharging network coupled to another of the flip-flop inputs.

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patent: 4754160 (1988-06-01), Ely
patent: 4812672 (1989-03-01), Cowan et al.

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