Electrical transmission or interconnection systems – Personnel safety or limit control features – Interlock
Patent
1993-04-28
1994-05-24
Callahan, Timothy P.
Electrical transmission or interconnection systems
Personnel safety or limit control features
Interlock
307359, 307352, H03K 524
Patent
active
053151682
ABSTRACT:
A peak hold circuit includes an operational amplifier in a continually closed feedback loop and a peak hold capacitor with a discharge path. An input signal is received at a first input of the amplifier, and the output of the amplifier is fed to a first transistor then fed back therefrom to a second input of the amplifier. A current sink is coupled to the first transistor for drawing a current therefrom so that the feedback signal is continually provided to the second amplifier input, ensuring that the amplifier is in a continually closed feedback loop. The output of the amplifier is supplied to the peak hold capacitor through a second transistor.
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Callahan Timothy P.
Fujitsu Limited
Nu Ton My-Trang
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