Indicated for adjustment in transmitters for the 11-meter band, this circuit with analog meter was found in the Radio Electronics magazine of January 1978. The circuit does not use a power supply.
This circuit is from a 1986 Revista Española de Electrónica. It consists of an amplifier with...
The operational amplifier of this low current source may be any of the JFET type. The output...
This phase shift oscillator generates sinusoidal signals in the audio range. Frequency depends on...