Antenna Amplifier (CB26118E)

This circuit for analog VHF televisions was found in the 1989 Radio Electronics Experimenter magazine. It also works for FM receivers.

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Fourth Order Butterworth Filter (CB4909E)
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Video amplifier (CB8743E)
Found in a 90s Popular Electronics, this circuit is intended for amplifying analog video signals....
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Based on a 555, this 80's American documentation circuit detects the voltage of a battery and can then...