It's been a long time since college physics and I was not sober a lot of that time, so I get bad sector errors when I try to remember electronics.
I picked up one of these slave clocks at an estate sale for almost nothing because they didn't know what it was and they couldn't make it tick etc. I bought a little circuit board off the internet that is powered by a 9V battery, took a month to ship from Europe.
The clock itself will advance if I connect the wires across as low as a 1.5V AA battery. Does the same with 9V or any combination thereof, so the coil mechanism seems to still be capable of performing its function when a pulse of electricity is delivered.
The manufacturer of this little 1.5" square board says it outputs 24VDC at 1 minute intervals, but if you have a clock that uses less, you have to install a resistor. (No, I have not done that yet).
I hooked a 9V battery up to the board, the board up to the clock wires, pushed the 'advance' button and nothing happened even though the LED was on saying the board was active and the computer recognized the board through a micro-USB.
The problem is, it only makes the pawl/lever to advance the minute hand barely quiver and certainly not enough to advance the hand one minute. It does seem to make the circuit board hot if you keep mashing the "advance" button.
So, the clock advances just fine under anything from 1.5VDC up to 18-ish when directly connected across the terminals. Just not using the little circuit board.
I don't know what the clock's original operating voltage was supposed to be, it's not marked on the mechanism or elsewhere on the clock that I can find, I just know that pretty much any small battery I can find in the house will make it advance, just not the circuit board at 24VDC output.
As I said, I didn't wire a resistor into the line yet, this is more of a "why won't the circuit board's 24V pulse make the minute hand advance when 1.5V from an AA battery will.
I picked up one of these slave clocks at an estate sale for almost nothing because they didn't know what it was and they couldn't make it tick etc. I bought a little circuit board off the internet that is powered by a 9V battery, took a month to ship from Europe.
The clock itself will advance if I connect the wires across as low as a 1.5V AA battery. Does the same with 9V or any combination thereof, so the coil mechanism seems to still be capable of performing its function when a pulse of electricity is delivered.
The manufacturer of this little 1.5" square board says it outputs 24VDC at 1 minute intervals, but if you have a clock that uses less, you have to install a resistor. (No, I have not done that yet).
I hooked a 9V battery up to the board, the board up to the clock wires, pushed the 'advance' button and nothing happened even though the LED was on saying the board was active and the computer recognized the board through a micro-USB.
The problem is, it only makes the pawl/lever to advance the minute hand barely quiver and certainly not enough to advance the hand one minute. It does seem to make the circuit board hot if you keep mashing the "advance" button.
So, the clock advances just fine under anything from 1.5VDC up to 18-ish when directly connected across the terminals. Just not using the little circuit board.
I don't know what the clock's original operating voltage was supposed to be, it's not marked on the mechanism or elsewhere on the clock that I can find, I just know that pretty much any small battery I can find in the house will make it advance, just not the circuit board at 24VDC output.
As I said, I didn't wire a resistor into the line yet, this is more of a "why won't the circuit board's 24V pulse make the minute hand advance when 1.5V from an AA battery will.