Low level signal comparator apparatus

Details Low level signal comparator apparatus Low level signal comparator apparatus

1982-08-18

1985-01-15

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307355, 307530, H03K 524

Patent

active

044940190

ABSTRACT:
The present comparator circuit uses a multiplexing operation in a feedback arrangement for balancing the current flow in one-half of a comparator circuit so that its effect is identical to the other half of the comparator circuit for a grounded input. In between the adjustment or "trim" operation, the same comparator and output circuitry are utilized to provide an indication of which of two input signals are greater. As designed, the circuit substantially eliminates unbalance problems due to temperature, device parameter variations due to processing, aging of these parameters and load unbalance conditions, as well as minimizing transistor noise in the output.

REFERENCES:
patent: 4070590 (1978-01-01), Ieda et al.
patent: 4139911 (1979-02-01), Sciulli et al.

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