This is an interesting configuration of the LM317 voltage regulator found in an EDN from the 90s. The circuit uses an optical coupler and is intended to supply constant current to a sensor resistor.
In this circuit we have the way to use common diodes to obtain low regulated voltages in a single...
This circuit is from a 2005 Linear Technology manual. The circuit uses an LT6700-3 and has an...
The crystal frequency of this circuit found in an American documentation is limited only by the...