This circuit supplies currents from 100 mA to 2 A per R. The circuit is from a 90s American documentation. The components used are common today.
This 2000 circuit, found in the documentation of the time, is intended for charging this type of...
The circuit shown is a low-power LED flashlight. The LEDs are white with a current of 20 mA, and...
This simple photometer circuit uses an LDR as a sensor and the indicator is a sensitive...