This is the prototype circuit using the XR-2206 signal generation IC. D3 extracted a Toshiba TC9235P volume control IC out of a small Cambridge SoundWorks desktop radio found at a yard sale; the up/down control (silver knob) is out of a CD player. The XR-2206 has a pin dedicated as an amplitude modulation input and early testing shows it works very well. For use testing our amplifiers, filters and enclosure designs, we plan to build this into a portable instrument box.Friday, May 29, 2009
Signal Generator Circuit with Volume Control
This is the prototype circuit using the XR-2206 signal generation IC. D3 extracted a Toshiba TC9235P volume control IC out of a small Cambridge SoundWorks desktop radio found at a yard sale; the up/down control (silver knob) is out of a CD player. The XR-2206 has a pin dedicated as an amplitude modulation input and early testing shows it works very well. For use testing our amplifiers, filters and enclosure designs, we plan to build this into a portable instrument box.
