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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Wireless CW Monitor (CB4179E)
Placed near a telegraphic transmitter (CW) and with a small antenna or pickup, it reproduces the...
Different 555 blinker (CB25116E)
This circuit for a decorative robot was found in the April 1988 Radio Electronics magazine. The...
Amplifier for Nanoammeter TL081 (CB19472E)
The resistor values depend on the desired gain and the full scale of the indicator instrument. The power...