DEVICE TO TRANSMIT SIGNAL TO TRACK CIRCUIT Russian patent published in 2006 - IPC B61L23/16 

FIELD: railway signaling and communication.

SUBSTANCE: invention can be used for internal traffic control on sections between stations and at stations. Proposed device contains source of modulated signal and series-connected prime amplifier, output voltage control unit with means for manual control of outlet voltage, and output amplifier whose output is output of device. Moreover, signal level control unit, two switch elements, output voltage manual control means condition sensor, peak detector, memory unit, control signal shaper and comparator. Signal input of signal level control unit is connected to output of modulated signal source, and output, to input of prime amplifier, and control input, to output of first switch element. Signal input of first switch element is connected to output of comparator, and control input, to first output of control signal shaper. Second output of signal shaper is connected to control input of second switch element connected by output with input of memory unit connected by output to first input of comparator. Output amplifier is connected through peak detector to signal input of second switch element and to second input of comparator. Said sensor is connected by input to manual control means through additional output of output voltage control unit, and by output it is connected with input of signal shaper.

EFFECT: increased stability of level of output signal set at manual adjustment owing to stabilization of said level.

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