I decided to make a small board to slow the motor in my laminator (See here).
In my case, 0.25 seconds ON / 3 seconds OFF.
A 555 drives a triac output optocoupler which turns on a triac, which turns on the motor. The triac is snubbed using a 22 ohm resistor and a 0.1uF capacitor (in series).
Unfortunately for me, the motor draws so small a current, the snubber itself provides sufficient current to make the motor turn!
Doh!
In my case, 0.25 seconds ON / 3 seconds OFF.
A 555 drives a triac output optocoupler which turns on a triac, which turns on the motor. The triac is snubbed using a 22 ohm resistor and a 0.1uF capacitor (in series).
Unfortunately for me, the motor draws so small a current, the snubber itself provides sufficient current to make the motor turn!
Doh!