Electrical transmission or interconnection systems – Personnel safety or limit control features – Interlock
Patent
1979-05-01
1982-03-02
Anagnos, Larry N.
Electrical transmission or interconnection systems
Personnel safety or limit control features
Interlock
307450, 307581, H03K 524, H03K 1730, H03K 17687
Patent
active
043180132
ABSTRACT:
An N-channel MOS high voltage detection circuit generates an output when an input voltage (Vin) exceeds a supply voltage (V.sub.DD) by a desired offset voltage. The crossover detection is delayed by pumping more current into an output producing node via a lower resistance field effect transistor having a gate coupled to the input voltage. The output is finally produced when the effect of this transistor is overcome by a second field effect transistor. Switching characteristics may be sharpened by placing a voltage limiting field effect transistor between Vin and the gate of the low resistance field effect transistor.
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Eckert Kim
Thomas James S.
Anagnos Larry N.
King Robert L.
Motorola Inc.
Myers Jeffrey Van
Sarli, Jr. Anthony J.
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