Automatic cab signal test set

Details Automatic cab signal test set Automatic cab signal test set

G - Physics

01

R

346/44

G01R 15/12 (2006.01) B61L 21/00 (2006.01) G08B 29/00 (2006.01)

Patent

CA 1189179

ABSTRACT THE DISCLOSURE An automatic electronic cab signal test set for testing the integrity of a pair of pickup coils and for checking the sensitivity of the amplifier of the cab signal receiver. A mode selector is connected to a clock oscillator which pro- duces clock pulses. The clock pulses are connected to an up/down binary counter which sequentially counts up from zero to a maximum count and then sequentially counts down from the maximum count to zero. The up/down binary counter is connect- ed to a code selector which changes the time constant of an R-C network of a code oscillator. The code oscillator illuminates an indication when the cab signal receiver is under test and modulates the carrier signal of a carrier oscillator. The modulated carrier signal is fed to the input of a constant current source which has its output directly connected to the pickup coils and the amplifier of the cab signal receiver. A low-high switch conditions and powers the test set which goes through a simulated low rail current speed command sequence and then goes through a simulated high rail current speed command sequence.

403517

Affiliated with

Also associated with

Rating

Automatic cab signal test set does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic cab signal test set, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic cab signal test set will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1340712