Field strength meter (CB7358E)

This tuned circuit was found in a 1966 Electronic Circuit Handbook. The transistor can be any modern general-purpose equivalent.

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Transformerless Power Supply (NI003E)
This power supply is indicated to power small loads up to 30 mA. The original output voltage is 6...
Synchronized switch (CB8253E)
Synchronized key. This circuit was found in a 1966 General Electric documentation. Modern...
Photodiode Amplifier (CB4846E)
This setting appears multiple times on the site from different sources. This is from a 2000 manual...