5V switch (CB8705E)

Found in a 90s EDN, this circuit makes use of period components. The maximum current depends on the MOSFET.

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Stereo Equalizer (CB16706E)
In the original 1992 application, this passive circuit was intended for use in the car. At that...
FM or VHF Receiver (CB4578E)
This 1995 circuit uses an audio amplifier that is no longer common today. However, other...
RIAA Equalization Amplifier (CB4952E)
This circuit is from an 80's documentation. The integrated circuit is from the time and the...