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.
The great advantage of the circuit shown in the figure is that its frequency is controlled by a...
This circuit can be used as a shield for microcontrollers. The circuit is from American...
Mounting an oscilloscope is the dream of many of our Internet users, although it comes up against...