This TTL circuit for digital signals up to a few dozen megahertz was found in old documentation, but can be easily assembled today and even used as a shield for microcontrollers. Power must be supplied with a 5V voltage.
This circuit uses a common multimeter on the voltage scale to measure the beta gain of a...
This old fashioned transistor amplifier was found in a publication of the year 1958. Transformer...
This circuit makes use of older operational amplifiers, but can be designed on the basis of modern...