LED Indicator for Soldering Irons (CB16836E)

Details
Written by: Newton C. Braga

 

This simple indicator circuit, found in a 1997 documentation, indicates when a soldering iron up to 100 W is connected. The circuit has two versions with 1 and 2 LEDs. The diodes must have voltages of 200 V for the 110 (1N4004) network and 400 V for the 220 V (1N4007) network.

 


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