Signal detecting circuit

Details Signal detecting circuit Signal detecting circuit

1986-01-08

1987-06-09

Zazworsky, John

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307354, 307358, H03K 5153

Patent

active

046722386

ABSTRACT:
A signal detecting circuit includes a first source follower having an input connected to a first voltage source, and a second source follower having an input connected to a second voltage source. There is provided an additional field effect transistor having a gate connected to the input of the second source follower, a source which is connected through a resistor to an output of the first source follower. The source of the additional field effect transistor is connected to a signal input terminal and one input of a voltage comparator whose other input is connected to an output of the second source follower.

REFERENCES:
patent: 3700920 (1972-12-01), Eyler
patent: 4020423 (1977-04-01), Guyot et al.

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