An LM555 timer paired with an NTC thermistor makes a simple, configurable ON/OFF thermostat for heating or cooling.
Most power-supply regulators, by definition, provide an output voltage that is stable despite variations in line (input voltage), load, and temperature. However, a temperature-dependent output voltage ...
It is a running gag around here that whenever a project posts, someone will inevitably point out that it could have been done with a 555 timer IC. [Stephen Woodward] went the opposite way and ...
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