Found in documentation two years 80, this toy instrument uses an integrated circuit little commonly. As notes are given the values of key series resistors on the keyboard.
This is the traditional configuration of na Astable Multivibrator using two NPN ttransistor....
This circuit, which combines a bipolar with any JFET, was found in the April 1993 issue of...
This filter was found in a Texas Instruments manual based on an operational amplifier 741. Other...