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The following circuit is can be used to control the speed of sewing machine or mixer motor. It will be effective to use simple half wave motor speed control with small universal ac/dc motors. The maximum current capability is the two amps RMS. The control gives a perfect torque characteristics to the motor. This is [...]

Press the push switch to ‘throw’ the dice: this makes the circuit rapidly cycle through the dice numbers so that an effectively random dice number is displayed by the LEDs when the push switch is released.Drill seven 5mm holes in a dice pattern to mount the LEDs on a panel such as a plastic box [...]