This source allows the supply of laser diodes with voltages above 11 V. The circuit is from French documentation and equivalent components can be used.
Here we show an oscillator that uses an LC network. The upper limit depends on the power-supply...
This circuit from a Popular Electronics from the 90s allows you to use an old PC as a digital...
of the National Semiconductor of 1994. The same technique can be used with other operators and the...