This circuit is from a Radio Electronics from February 1959. The circuit has a speaker output and good sensitivity. Power is supplied from a 9 V battery.
August 2017 - Mouser Electronics has already for dispatch Microchip MIC28515 Controlled Regulators for...
This circuit was found in a 1978 English magazine. It is a configuration that aims to select the...
Found in an Electronic Design from the 90's, this circuit simulates a 100 W resistor. The power...