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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Sequential Show (CB16707E)
This circuit was found in a 1992 publication. The circuit uses common components and includes the...
Fuse relay for battery charger (CB7137E)
This protection circuit for battery chargers was found in an old Elektor. The relay is according to...
Seismic Amplifier (CB6207E)
This very low frequency amplifier has a gain of 1,000 and was found in a 1967 documentation. The circuit is...