As we know, traditional soldering irons uses mains ac supply to get heated but this will be annoying when we want to use it in the absence of mains supply. Here is a simple inexpensive circuit which we can call it as a inverter for normal soldering iron (25W, 30W, 35W). The circuit can drive the soldering iron in the absence of power supply from mains. This cold soldering iron circuit uses eight transistors and few resistors and capacitors. The battery should be a 12 Volt 7Ah.
Sunday, May 30, 2010
