Adjustable threshold window circuit

Details Adjustable threshold window circuit Adjustable threshold window circuit

1987-03-20

1988-05-10

Zazworsky, John

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307264, 307360, H03K 5153, H03K 524, G01R 19165

Patent

active

047437790

ABSTRACT:
An adjustable threshold window circuit having low-input bias current and constant percentage threshold hysteresis. The window circuit defines an upper reference voltage and a lower reference voltage, both simultaneously adjusted from a common signal wherein the upper threshold voltage increases as the lower voltage threshold decreases to define a voltage window. The threshold voltages are received by a comparator circuit which receives signals to be compared to the upper and lower voltage references, and provides an overvoltage and undervoltage fault indication when the received signals exceed the respective thresholds. Theovervoltage and undervoltage fault signals are received by the window circuit, providing an adjustment of the reference voltages to produce a hysteresis effect. The hysteresis is simultaneously adjusted to be proportional to the voltage window as the reference voltages are adjusted, wherein the hysteresis produced maintains a constant percentage or proportion throughout the range of reference voltages.

REFERENCES:
patent: 4161700 (1979-07-01), Fujikata et al.

Affiliated with

Also associated with

Rating

Adjustable threshold window 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 Adjustable threshold window circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adjustable threshold window circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1322610