Geiger counter with high voltage source (CB22333E)

This circuit includes a high voltage inverter to power a Geiger tube. We found it in an American documentation from the 60s.

Remote ear (CB20528E)
This remote listening device was found in documentation from the 50's. The transistors used are...
Current Sensor Shield (CB5231E)
This circuit includes an AD converter for interfacing with a microprocessor and can be used as a...
Debounce circuit (CB24776E)
The figure shows an anti-bounce circuit among many that can be found on our website and in our...