Comparator

Details Comparator Comparator

1991-11-18

1994-05-17

Zazworsky, John

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307491, 307494, H03K 524, H03K 5153

Patent

active

053131150

ABSTRACT:
A comparator comprises transistors to turn on/off an input terminal and a control circuit to enable the transistors in a high impedance input state. The high impedance input state can be detected by the above construction without additionally providing any wire and connector.

REFERENCES:
patent: T957008 (1877-04-01), Sheng
patent: 3942044 (1976-03-01), Armstrong
patent: 4009398 (1977-02-01), Yamada et al.
patent: 4716305 (1987-12-01), Sakuragi et al.
patent: 4748352 (1988-05-01), Kamiya et al.
patent: 4871926 (1989-10-01), Neely et al.
patent: 5045943 (1991-09-01), Kurihara
"Audio AGC circuit has 40-dB dynamic range" by Norman M. Hill, Electrical Design News Jul. 23, 1987 No. 15, Newton, Mass., USA pp. 309-310.

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