This configuration was found in an English magazine from 1965. It is valid for any junction FET. The input impedance is 5.5 M ohm higher than conventional stages.
This simple transistor tester was found in a Japanese magazine in 1967. It tests general purpose...
This circuit, which appears on our website in different versions, uses an integrated VU which is...
This configuration of PWM control with the LM317 was found in a Popular Electronics from the 90s....