We found this circuit for video games in a Radio Electronics magazine from August 1977. The transistor can be any common RF type that reaches the desired signal frequency.
This circuit was found in Motorola's Linear Interface ICs of 1993. The integrated circuit used is not...
This configuration was found in a publication for radio amateurs in 1979. The two integrated...
This circuit makes use of a 741 single source operational amplifier to measure resistors on a...