This circuit was found in a Motorola documentation from the 90s. The transistor used is uncommon today. The output power is 1 W.
This circuit for analogue TV was found in an American 1980s documentation. The transistor can be any RF...
The diagram shows a simple way to adjust a 7805 to have output voltages up to 12 V. The circuit is from...
It can be obtained from Mouser Electronics the new LM290xAQ operational amplifiers from Diodes...