Buffer with MOSFET (CB26318E)

This boost amplifier was found in a Popular Electroniics from the 90s. The circuit operates up to 20 MHz depending on the coils used.

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Damped sound (CB22470E)
This circuit generates a tone of a bell and can be used in this type of application. The circuit is...
7-Segment Counter-Decoder (CB415)
This circuit uses a common-cathode 7-segment display powered from a decoder and a 0-9 counter. The...
VHF to AM converter (CB16829E)
With this simple converter found in a 1997 documentation, it is possible to tune VHF stations to a...