Bipolar transistors are types of general use like BC548, while the power MOSFET can be of any type depending on the current and voltage in the load. The circuit is from old documentation.
.
Using a CA3130, we found this circuit in an English publication from 1977. The circuit must use a...
We found this circuit in an American documentation from the 90s. The consumption is only 1 uA in...
This 1967 Electronics World circuit is suitable for frequencies up to 1 MHz. The setting applies...