Electrical transmission or interconnection systems – Personnel safety or limit control features – Interlock
Patent
1982-09-28
1985-06-25
Zazworsky, John
Electrical transmission or interconnection systems
Personnel safety or limit control features
Interlock
307362, 307557, 307562, 307303, H03K 508, H03K 5153
Patent
active
045256373
ABSTRACT:
An integrated circuit has an input voltage-clamping function and an input current-detecting function. A voltage-clamping circuit is provided for clamping a voltage at the input signal terminal, the voltage being clamped in response to an input current greater than a first predetermined value supplied to the input terminal. A current detecting circuit is also provided for detecting whether the input current supplied to the input terminal is greater than a second predetermined value, whereby the single input terminal for signals is used for both functions, i.e., the input voltage-clamping function and the input current-detecting function.
REFERENCES:
patent: 3979606 (1976-09-01), Ahmed
patent: 4104547 (1978-08-01), Frederiksen et al.
Maida Osamu
Sano Yoshiaki
Tsuchiya Chikara
Fujitsu Limited
Nippon Kogaku K.K.
Zazworsky John
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