Automatic initialization in a model railroad motor control system

  • US 5,394,068 A
  • Filed: 02/02/1993
  • Issued: 02/28/1995
  • Est. Priority Date: 11/16/1984
  • Status: Expired due to Term
First Claim
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1. A reversing motor control circuit for driving a motor in a remote object on a track, the circuit comprising:

  • input means for receiving a track power signal from the track;

    state means for indicating a present state that is one of a predetermined series of states including a forward state, a neutral state and a reverse state, the state means having a clock input for clocking the state means to indicate the next one of the series of states as the present state;

    power control means coupled to the input means for controllably coupling the track power signal to the motor so as to control the motor according to the present state of the state means;

    a reset timing means for resetting the state means to a selected one of the series of states upon completion of a predetermined reset period; and

    a clocking timing means for clocking the state means to the next state upon completion of a predetermined clocking period;

    the reset timing means and the clocking timing means each coupled to the input means to begin the reset period and begin the clocking period responsive to an interruption in the track power signal, whereby operation of the state means is controlled by interrupting the track power signal.

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