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 traditional oscillator configuration with NAND TTL gates can generate signals up to 20 MHz,...
Author: Newton C. Braga Published:Aug, 2016 Formato:Book and e-Book Pages:...
Found in Popular Electronics, this '90s circuit generates harmonic-rich signals for testing audio...