This circuit makes use of a specific 80's component and was found in an American manual of the time. A matrix keyboard allows you to select one of several music programs.
The circuit shown is from the Linear Applications Handbook and the maximum frequency is in the...
This 100 kHz crystal oscillator uses 7404 to generate square signals. We found it in a Popular...
The circuit shown is a reference of -10 V with a maximum current of 50 mA obtained from the Linear...