This 4-voltage power supply using zener diodes has a maximum recommended current of 25 mA. The circuit was found in the May 1966 Radio Electronics magazine.
This circuit uses a common diode to switch a high frequency signal. The circuit was found in the...
This circuit was found in a 1974 publication. It converts the applied voltage into pulses of...
Based on TTL logic this circuit can vary both the frequency and the pulse width of a rectangular signal....