Found in documentation from the 1990s, this circuit converts 12 V to 9 V from a car's power output. The 100mA current eliminates the need for a heatsink on the transistor.
The integrated circuit used in this project is not common today, but the circuit can be adapted to use a...
This low current source without a transformer is intended for applications where insulation is not...
This dimmer for high-powered incandescent lamps was found in a 1967 General Electric manual. The...