This heating circuit, for example, uses a MOSFET as a heating element and as its own temperature ... cycle this diode can be probed and used as a thermostat. In this build, it is controlled ...

Is it starting to get a bit cooler where you are? It might be time for you to turn on the heat at home again. But just turning your thermostat back on and readying yourself for the new season ...

But there's more to prepping your house for winter than turning on the thermostat and waiting for things to warm up. The heat may feel good, but we're willing to bet that higher utility bills ...