We found this circuit in the March 1995 issue of Electronics Now magazine. The circuit has a frequency range determined by C1 and R3. The signal generated is square.
We found this circuit in a 1980 documentation. With basic changes, including transistors that were...
In the figure we show a simple way to use a zener diode to protect a load against overvoltage. The...
This circuit, from a component manual, also applies to other components in the same family. The...