Found in a Popular Electronics from the 90s, this amplifier uses an integrated circuit from the time. The circuit operates from the LF band up to 600 MHz with a gain of 16 dB.
This 1956 direct amplification radio circuit was found in a documentation from Sylvania that...
This conventional oscillator with the 741 can be precisely adjusted to produce a 400 Hz signal. The...
This circuit uses two diodes in a doubling configuration to receive medium-wave range signals. The...