Voltage monitoring and indicating circuit

Details Voltage monitoring and indicating circuit Voltage monitoring and indicating circuit

1980-03-24

1982-02-23

Zazworsky, John

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307 64, 307130, 307296R, 340650, 340652, 361 92, H03K 5153, G08B 2100

Patent

active

043170560

ABSTRACT:
A voltage monitoring and indicating circuit for producing an output pulse at an output terminal in response to the loss of a positive dc input voltage at an input terminal. A capacitor is charged during the presence of an input voltage at the input terminal, and a transistor coupled to the capacitor and to the output terminal operates in a non-conducting state so that no voltage pulse is produced by the transistor at the output terminal. In the event of a subsequent loss of the input voltage, the capacitor discharges into the transistor and causes the transistor to operate in a conducting state and a discharge path to be provided through the transistor for the capacitor. As the discharge takes place, an exponentially-decaying pulse is produced by the transistor at the output terminal. The components in the discharge path may take any one of a variety of forms to allow the circuit to produce an output pulse at the output terminal as a result of a loss of input voltage due to an open circuit condition or both an open circuit condition and a short circuit condition.

REFERENCES:
patent: 3189788 (1965-06-01), Cady
patent: 3364365 (1968-01-01), Eisenhauer
patent: 3522481 (1970-08-01), Terzic

Affiliated with

Also associated with

Rating

Voltage monitoring and indicating circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Voltage monitoring and indicating circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Voltage monitoring and indicating circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1775548