Found in a Popular Electronics from the 90s, this circuit generates signals from 2 Hz to 30 kHz in different bands. The circuit can be powered by voltages from 5 to 12 V, depending on the application.
The circuit shown in the figure has elements for maximum gain at maximum speed. By setting the...
In the figure we have the way to implement a monostable with a comparator 139, 239 or 339. The...
This circuit matches a high impedance input signal with a low impedance output. This circuit is...