I have a heated propagator inside a greenhouse to aid seed germination (5Watt 240V). There is no way of controlling its temp. I need a simple thermistor thermostat circuit to switch heating on when air temp falls in evening, and switch heating off when air temp rises. I want to run this circuit from a simple capacitative mains dropper power supply, so it doesn't need transformer or batteries.
Any help please? Thanks
Any help please? Thanks