Apparatus for and a method of generating an analog signal...

B - Operations – Transporting – 61 – C

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B61C 17/12 (2006.01) B60L 7/00 (2006.01) B61H 13/02 (2006.01) G05G 11/00 (2006.01) H02P 15/00 (2006.01) H03K 17/082 (2006.01) H03K 17/785 (2006.01) B60K 41/20 (1995.01)

Patent

CA 2140114

A locomotive throttle controller having a central processor unit which generates an analog signal for control of dynamic braking and includes an analog output driver which supplies the dynamic brake reference voltage. Such analog output driver includes a device for receiving an analog signal from the central processor unit and for converting such analog signal into an analog voltage signal. The analog output driver provides an arrangement for using such analog voltage signal to provide a regulated voltage output to a trainline which controls the dynamic braking. Incorporated into the output driver is a protection arrangement to protect it from reverse voltages on such trainline and an arrangement for protecting such output driver from excess current demand of the trainline.

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