Jacob's Ladder (CB21079E)

This circuit was found in American documentation from the 90's. The transformer is of the high voltage type for old light advertisements.

| Clique na imagem para ampliar |

3 Tone Oscillator (CB4187E)
This circuit appears in other articles and suggestions for circuits in this section from other...
Improvised 110 V to 220 V Transformer (CB13499E)
In the figure we have the way of obtaining 220 V from two equal 110 V transformers or 230 V from...
Continuity Tester (CB16894E)
We found this simple continuity tester in a 1995 documentation. It uses two LEDs to indicate...