Apparatus for controlling traffic lights

Details Apparatus for controlling traffic lights Apparatus for controlling traffic lights

1990-09-12

1992-07-21

Ng, Jin F.

Communications: electrical

Traffic control indicator

Traffic control or local controller failure indicator

340907, 364436, G08G 1097

Patent

active

051326825

ABSTRACT:
A device for providing an orderly shut-down of a system of interconnected traffic lights upon loss of its primary electrical power is disclosed. A device for permitting consistent reapplication of power to a line conditioner having a ferroresonant transformer is also disclosed. Further, a battery charger for charging a battery system including a plurality of battery cells coupled in series is disclosed. Additionally, a device for determining proper operation of a power transistor by monitoring its saturation voltage and emitter current is also disclosed. Finally, a device for generating a first alternating signal in-phase with a separately generated second alternating signal is disclosed.

REFERENCES:
patent: 3641487 (1972-02-01), Rogers et al.
patent: 4510549 (1985-04-01), Tedesco

Affiliated with

Also associated with

Rating

Apparatus for controlling traffic lights does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for controlling traffic lights, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for controlling traffic lights will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-846838