This circuit was found in the July 1988 issue of Radio Electronics magazine. It makes use of an operational transconductance amplifier (OTA) still in use today.
In the figure we show yet another CMOS component based voltage controlled oscillator circuit. The...
This 80's circuit uses an operational amplifier of the time. The circuit can be applied to modern...
This circuit, which uses only common transistors, was obtained from a 1988 publication, but can be...