An actual quartz analog wristwatch wouldn't do something so mundane as to use a 50uf capacitor to drive the coils. They do this:
DRIVER-A---------------------COIL-----+ ......................................| DRIVER-B------------------------------+ And feed the drivers with these waveforms: 1.5V..........+-+.............+-+.............+-+...... ..............|.|.............|.|.............|.|...... A-------------+ +-------------+ +-------------+ +---... 1.5V..+-+.............+-+.............+-+.............. ......|.|.............|.|.............|.|.............. B-----+ +-------------+ +-------------+ +-----------... Where the pulses alternately come from A and B every second. If you use a PIC to drive the clock, the driver is easy to program in software. -Chuck Harris [email protected] wrote:
I understand now why most analog wristwatches do tick every two seconds when the battery is low. I believed the logic used this trick to signal low battery. Antonio I8IOV
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