Video amplifier (CB9413E)

This 4.5 MHz amplifier is suitable for analog TV applications. We found it in a 1967 Philips documentation.

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Negative high voltage source (CB8122E)
We found this circuit at Popular Electronics. The components are still current. Changes can be...
Class A power amplifier (CB22236E)
This circuit is from an American publication from the 60's. The power is on the order of 600 mW....
Tachometer and Audio Meter (CB4126E)
This circuit was found in an American 1980s documentation. It is a circuit that can be used to...