This high quality circuit with complementary symmetry was found in an Electronics World of 1966. It can be made with modern transistors like the BD or TIP series.
This immobilizer circuit for vehicles was found in a 80’s Hands On Electronics. The circuit...
This circuit can be used as a clok in digital applications. Power supply is 5-V and the pins for...
With this preamplifier it is possible to use a small speaker as a microphone. The circuit is also...