I need a circuit to drive a bipolar stepper motor used in quartz clocks operated either 1.5V or 3V.
Instead of 1Hz frequency generated by a circuit from fixed crystal frequency in all the quartz clocks, i have a to and fro moving pendulum (with 2 secs beat)which generates an output pulse of 300mv every instant whenever permanent magnet fixed beneath the moving pendulum passes over a fixed coil.
The pendulum is also driven by the same coil.
A simple electronic circuit is built in to drive coil-1 which imparts pendulum to move to and fro and the other coil-2 generates 300 mV due to magnetic flux.
I would like to drive the bi-polar stepper motor only (already provided in the quartz clock) with a suitable circuit with only the input i.e. 300mV pulse.
The required circuit shall generate the following:
a) output of 1 Hz with 20 to 30 % duty cycle with positive 1.5V or 2 V peak.
b) second output of 1 Hz with 20 to 30 % duty cycle with positive 1.5V or 2 V peak - AFTER 1 sec.
c) The circuit shall able to run by 5V to 6V source.Preferably by a battery and shall consume very less power.
if you need any info. i would feed instantly. Regards.
Instead of 1Hz frequency generated by a circuit from fixed crystal frequency in all the quartz clocks, i have a to and fro moving pendulum (with 2 secs beat)which generates an output pulse of 300mv every instant whenever permanent magnet fixed beneath the moving pendulum passes over a fixed coil.
The pendulum is also driven by the same coil.
A simple electronic circuit is built in to drive coil-1 which imparts pendulum to move to and fro and the other coil-2 generates 300 mV due to magnetic flux.
I would like to drive the bi-polar stepper motor only (already provided in the quartz clock) with a suitable circuit with only the input i.e. 300mV pulse.
The required circuit shall generate the following:
a) output of 1 Hz with 20 to 30 % duty cycle with positive 1.5V or 2 V peak.
b) second output of 1 Hz with 20 to 30 % duty cycle with positive 1.5V or 2 V peak - AFTER 1 sec.
c) The circuit shall able to run by 5V to 6V source.Preferably by a battery and shall consume very less power.
if you need any info. i would feed instantly. Regards.