This is the traditional configuration of a standard lamp with a rectifier. Only incandescent lamp can be used and for the rectified version a 5 W lamp.
This circuit was found in an American documentation from the 80's. The components are from that...
The circuit shown is from the Texas Instruments optoelectronics manual. It is intended for audio...
This circuit drive an LED with constant current determined by the values of the resistors of 10...