This circuit was obtained in an American documentation from the 80's. The transistors can be equivalent to those indicated and the crystal can reach a few tens of megahertz.
November 2016 - The On Semiconductor Reference Development Kit and WDK1.0GEVK Reference Kit can...
We find this circuit in an American 80's documentation. No further information about the...
The circuit shown in the figure is in fact an excellent symmetrical switching source capable of...