Electrical transmission or interconnection systems – Personnel safety or limit control features – Interlock
Patent
1991-07-26
1993-09-21
Zazworsky, John
Electrical transmission or interconnection systems
Personnel safety or limit control features
Interlock
307352, 307362, 307491, 307497, H03K 524, H03K 19017
Patent
active
052472108
ABSTRACT:
Method and circuitry for decreasing the recovery time of an MOS differential voltage comparator after an input voltage overdrive. At the beginning of a comparison cycle a reverse voltage is momentarily applied between the gates and sources of the input pair of source-coupled MOS transistors of sufficient magnitude to form a charge accumulation layer in the channel region of each of the transistors. Operating the differential voltage comparator in such manner substantially decreases the time required for the transistors to recover from an imbalance in their electrical characteristics caused by the input voltage overdrive.
REFERENCES:
patent: 4150311 (1979-04-01), Matsuda et al.
patent: 4611130 (1986-09-01), Swanson
Crystal Semiconductor
Howison Gregory M.
Zazworsky John
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