Current source polarity switching circuit

Details Current source polarity switching circuit Current source polarity switching circuit

1987-04-23

1988-06-21

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307443, 307263, 307451, 307585, H03K 1716, H03K 1728, H03K 17687, H03K 19003

Patent

active

047527030

ABSTRACT:
An analog current source polarity switching circuit composed of a pair of main P-channel and N-channel polarity switching transistors is supplemented by a dummy load switching circuit for connecting each current source transistor in the polarity switching circuit to a dummy load when the main polarity switching transistor is turned off and for disconnecting the dummy load when the main polarity switchng transistor is turned on. The dummy load switching circuit preferably employs a second pair of complementary P-channel and N-channel transistors controlled through an inverter from the input to the main polarity switching transistor circuit. MOSFET transistors are employed throughout the circuit.

REFERENCES:
patent: 3140408 (1964-07-01), May
patent: 3942039 (1976-03-01), Kikuchi et al.
patent: 4115740 (1978-09-01), Yoshida et al.
patent: 4122360 (1978-10-01), Kawagai et al.
patent: 4323796 (1982-04-01), Lathrope
patent: 4567378 (1986-01-01), Raver
patent: 4578600 (1986-03-01), Magee
patent: 4622482 (1986-11-01), Ganger
patent: 4700088 (1987-10-01), Tubbs
Koch et al., "A 12-Bit Sigma-Delta Analog-to-Digital Converter with a 15 MHz Clock Rate", IEEE Journal of Solid State Circuits, vol. SC-21, No. 6, pp. 1003-1009, Dec. 1986.

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