Found in 1980s Electronics Design, this circuit covers 4 decades of frequencies with a unique control. A multi-turn trimpot is used for fine adjustment. The frequency range depends on C1.
The circuit shown in figure 1 was suggested by Maxim (www.maxim-ic.com) based on the DS2786B...
This circuit generates a signal in the form of a ladder, with voltages rising in steps. The base...
This trigger uses two transistors having been found in ancient French documentation. The circuit is...