This circuit was taken from an article in Electronics Now magazine in February 1995. The power supply must be dual and other operational amplifier can be used.
This common operational PLL circuit was found in a Popular Electronics 90’s. The power supply need...
This circuit generates audio signals for testing amplifiers and other equipment. The potentiometer R5...
The transistors of this amplifier for headphones with 8 to 200-ohm impedance can be BC548 or...