Electrical transmission or interconnection systems – Personnel safety or limit control features – Interlock
Patent
1990-08-29
1992-05-05
Zazworsky, John
Electrical transmission or interconnection systems
Personnel safety or limit control features
Interlock
307491, 307572, 307585, C11C 2702, H03K 1716, H03K 17687
Patent
active
051110725
ABSTRACT:
An improved sample-and-hold circuit includes a first MOSFET transmission gate connected between an analog input voltage and a storage capacitor. The first transmission gate is constructed to have low on resistance and operates for a predetermined period of time to rapidly charge the capacitor to input voltage. A second, smaller MOSFET transmission gate having reduced charge injection characteristics is connected in parallel with the first gate. The second gate is turned on coincidentally with the first gate but remains on for a short period of time after the first gate has been switched off.
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NCR Corporation
Stover James M.
Zazworsky John
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