Circuit Project Electronic

This circuit uses just integrated number circuit LM3909 and capacitors outside. It work by use NiCad battery 1.25V sizes. or The dry cell is small-sized is other. The circuit can do to copy is like , prevent many the group. For use show winking according to want Battery Charger Circuit [...]

This circuit uses LED - 2 pcs. show something On - Off of or the circuit that use Battery. By LED - D1 flasher , when open and D2 flasher when open. While open that have charge current amount of flow [...]

A friends at use the battery often meet a problem electric its energy is finished in important always may many good if there is the circuit warns before or there is the way checks at the beginning. By this circuit use the transistor just one and don’t have to have power supply [...]