Electrical transmission or interconnection systems – Personnel safety or limit control features – Interlock
Patent
1981-12-21
1984-03-27
Zazworsky, John
Electrical transmission or interconnection systems
Personnel safety or limit control features
Interlock
307279, 307530, H03K 5153, H03K 3356
Patent
active
044396945
ABSTRACT:
A metal-oxide-silicon (MOS) field effect transistor (FET) regenerative differential comparator circuit particularly suited for use in sigma-delta modulation apparatus. The circuit includes two differential amplifier stages followed by a latching amplifier stage. A regenerative latching section of two cross-connected latching FET's is connected to the latching amplifier stage. Each of the latching FET's is connected in series with a separate switching FET. A strobe pulse turns on the two switching FET's enabling the latching FET's. Depending on the relative polarity of the differential voltage produced by the latching amplifier stage, regenerative action drives one of the two latching FET's into heavy conduction thereby producing an appropriate digital output. The first two differential amplifier stages remain enabled during the regenerative action permitting high speed operation.
REFERENCES:
patent: 4096402 (1978-06-01), Schroeder et al.
GTE Laboratories Incorporated
Keay David M.
Zazworsky John
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