Tuned active antenna (CB8412E)

Found in a 90s Popular Electronics, this circuit allows to select the operating ranges between short waves and VHF. MOSFET is uncommon today.

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Power monitor (CB8706E)
This circuit was found in a 90s Hands On Electronics. It monitors the presence of voltage in a...
Voltaje Follower MC1439 (CB4016E)
This unit gain circuit has a very low output impedance. The circuit is of the Linear Databook of...
Shunt motor control (CB7939E)
Found in 1965 General Electric technical documentation, this half-wave circuit controls shunt type...