Electrical transmission or interconnection systems – Personnel safety or limit control features – Interlock
Patent
1979-04-12
1981-04-28
Zazworsky, John
Electrical transmission or interconnection systems
Personnel safety or limit control features
Interlock
330254, 330260, H03K 524
Patent
active
042648327
ABSTRACT:
This is a feedback amplifier incorporating shunt feedback pairs which are emitter coupled for differential input transimpedance configuration whose characteristic includes a low differential input impedance and a high common load impedance that uses low input offset voltages to initiate the amplification and a latch coupled thereto to latch and amplify the amplifier input causing the effective amplifier input to be several orders of magnitude greater than the initial offset voltages. Thus, the amplifier of the invention uses the latch to not only sense the output of the amplifier but also the drive and reinforce the amplifier input through feedback.
REFERENCES:
patent: 3621301 (1971-11-01), Tomczak
patent: 3745539 (1973-07-01), Davidson et al.
patent: 3899777 (1975-08-01), Feicht et al.
patent: 4027176 (1977-05-01), Heuber et al.
N. M. Donofrio et al., "Differential Shunt Feedback Sense Amplifier" IBM Technical Disclosure Bulletin, vol. 12, No. 12 May 1970, p. 2123.
IBM Corporation
Thornton Francis J.
Zazworsky John
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