This circuit was obtained from a Radio Electronics in February 1965. The circuit uses two transistors from the time and can be created with modern equivalent transistors.
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....