These 6 to 12 V source with current up to 100 mA was found in Radio Electronics magazine from June 19666. The source has a current indicator and uses transistors of the time.
The keyboard for this organ is made by small metal plates where the probe touches when in...
What this circuit does is generate a signal in a ladder pattern, containing steps in which the...
This oscillator has its frequency controlled by crystal and its frequency can be between 100 kHz...