This high voltage source, found in 90’s Popular Electronics, can reach tens of thousands of volts. The Q2 transistor must have an excellent heat sink and the 9 V source is high current.
This circuit can be used in PLL, frequency synthesizer in FM and VHF receivers, reducing a...
Found in an American circuit manual from the 1970s, this circuit can use any general-purpose transistor....
This power supply was obtained from an Electronic Design from the 90's. The circuit applies to...