Motor Speed Controller

This motor speed controller off eBay was a bargain at under $5 with free postage.

It uses a simple 555 timer circuit and has a fuse as well as reverse polarity protection.

I tested it with a 12V motor from a car electric window regulator and could vary the speed from full speed right down to a crawl.

This would be ideal for slowing down windscreen wiper motors to be used for moving Halloween props.


Claimed Specs:

Working Voltage: DC 12V – DC 40V.

Control Power: 10A max.

Static Current:0.02 A ( Standby ).

PWM Duty Cycle:10% -100%.

PWM Frequency:13 KHz.

Size: 60*56*27mm