This circuit was found in February 1976, Radio Electronics magazine. The circuit is quite sophisticated using a fast-acting (thermometric) sensor and analog indicator.
This circuit was found in a factory manual from the 1980s. It can serve as the basis for an...
ON Semiconductor NTMJS1D5N04C 40V Industrial MOSFET Available from Mouser Electronics, these ON...
This circuit uses bipolar transistors and unijunction transistors to generate a linear ramp in...