This circuit for analog VHF televisions was found in the 1989 Radio Electronics Experimenter magazine. It also works for FM receivers.
This circuit generates low-frequency sinusoidal signals. The variable capacitor is dual and the...
These circuits were obtained in an Electronics Now from the 90s. The integrated circuits are from...
This circuit for voltages up to about 20 V was found in a 90s Popular Electronics. The LED can be...