This circuit was found in documentation from the 1970s. However, it can be implemented with modern transistors such as 2N2222 for Q1 and BF494 for Q2. The crystal depends on the desired frequency.
The output voltage of this circuit is approximately four times the supply voltage. The circuit is from...
The two circuits shown show how to obtain an SSB / CW control for receiving this signal top at a...
This single-cell Li-Ion battery charger was found in a 2005 Linear Technology manual. The circuit...