This circuit uses a diode as a radiation sensor. The operational ones are old because the publication is from the 80's, but modern low voltage equivalents can be tested.
This circuit is a kind of Hertz Loop that can be used to check the operation of transmitters and...
This circuit is from the 80's, making use of components of the time. What the circuit does is...
November 2016 - The TL3780 ultra-miniature E-switch touch switches can now be obtained from Mouser...