I'm trying to adapt the circuit shown at figure 4 of http://www.circuitcellar.com/library/print/0606/Malik191/Malik-191.pdf
to a hot-wire application. You may look at my posts at http://forum.allaboutcircuits.com/showthread.php?t=4487
Can anyone tell me why a soldering pen would have three wires instead of just two for the heating element?
to a hot-wire application. You may look at my posts at http://forum.allaboutcircuits.com/showthread.php?t=4487
Can anyone tell me why a soldering pen would have three wires instead of just two for the heating element?