Found in an ancient American documentation, this circuit can generate signals up to 40 MHz for a Z80, microcontroller widely used at the time. The circuit must be powered with 5 V and also serves as a shield.
This circuit uses a GE optical coupler. Equivalents can be tried. The circuit is from the GE...
This simple circuit connects in external battery to a load when the AC Power line fails. S1 can be...
April 2017 - Mouser Electronics already has in stock the new HMC8400, Analog Devices low noise...