This automatic brightness control that uses an LDR as a sensor, was found in American documentation from the 1980s. Resistors in series with LEDs depend on the desired current.
This circuit converts a resistance in the range between 1 k ohm and 1 MΩ to a signal in a...
We found this circuit in an old American documentation. The circuit is simple by making use of an...
We found this circuit for 330 MHz using PIC in the magazine Electronics Now of December 1994. The...