This circuit is from a technical documentation on the National Semiconductor LM3909. The tripping transformer has a 1:1 turn ratio and the circuit is powered with 5V.
This sample and hold circuit configuration was found in a manual from the 70s. The operational amplifiers...
This small MW transmitter emits its signals at a distance of a few tens of meters, depending on the...
Found in American documentation from the 90s, this circuit uses common FETs. It has a range drift...