Output voltage detection circuit for traffic signal controller

Details Output voltage detection circuit for traffic signal controller Output voltage detection circuit for traffic signal controller

1997-09-11

1999-05-11

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327161, 327218, 327261, H03K5/153

Patent

active

059031727

ABSTRACT:
An improved output voltage detection circuit for a traffic signal controller which is capable of minimizing an operational characteristic variation with respect to the operational temperature variation and enabling a compact product. The circuit includes a detection voltage dividing unit for dividing a detection input voltage having an alternating current component applied to a traffic signal system into voltages having a predetermined level, a latch unit for latching a voltage from the detection voltage dividing unit and generating a detection output voltage, a zero crossing detection signal generation unit for detecting a zero crossing timing from an alternating current voltage power and generating a zero crossing detection signal, a memory unit for storing a delay algorithm therein, and a central processing unit (CPU) for reading a delay algorithm the zero crossing detection signal from the memory unit, performing a delay programming, and applying a latch clock signal to the latch unit as much as a programmed delay constant.

REFERENCES:
patent: 5717335 (1998-02-01), Lee

Affiliated with

Also associated with

Rating

Output voltage detection circuit for traffic signal controller does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Output voltage detection circuit for traffic signal controller, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Output voltage detection circuit for traffic signal controller will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-247923