Found in a 1968 Ferranti documentation, this circuit can be implemented with modern equivalent semiconductors. With the indicated components the load can be a lamp up to 1 A.
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...