Seat Heater switches

[Kent McLean]

Huw wrote:
> Because the heaters themselves, the elements, are either on or off.
> 
> The key is to turn them on and off automagically to maintain a set temperature.

Would this work?

  http://www.gadgetronicx.com/2014/05/pwm-lamp-dimmer-circuit-ic-555.html

That site also has a circuit to control a motor.

—
Kent McLean, who views electronics as magic
’02 VW Beetle TDI and lots of ex-Audis, including Bad Puppy