The following specification describes an hour meter assembly utilizing a solid-state circuit applying appropriately timed pulses to a coil capable of driving the meter dials with portions of the coil magnetic circuit and terminals supplying electrical power to the circuit serving to locate and secure an assembly of the solid-state circuit and dials in a meter case.
An electric drive includes a solenoid operable on low power and an electrc control circuit for use wherever accurate timing is required, for example, in driving an elapsed time hour meter, the electronic circuit including a voltage regulator, and a relaxation oscillator, receives the power input at any voltage between predetermined minimum and maximum voltages, for example, from 10-130 volts, and controls the output to the voltage and frequency required for operating the solenoid, with which is associated an armature or "flapper" that actuates a pawl and ratchet device which is drivingly connected to the meter.
