In the figure we have a basic oscillator with inverters obtained from TTL, CMOS or other gates. The graph on the side allows to find the frequency depending on the resistor and the capacitor.
A girator reverses the impedance of a signal. Thus, a low impedance signal at the input appears as high...
This circuit is from an old English publication from 1968. We can implement it with TIP32...
This circuit was obtained from a Popular Electronics of the 80's. It is set to a certain pulse...