PCB circular para ladron de julios

youmagine

This thief of juleps is designed to be used in the homemade battery project with sea water or bleach (https://www.youmagine.com/designs/pila-con-agua-de-mar-o-lejia). The potentiometer replaces the 2.2 K resistor to better grade the voltage value at the transistor base according to the voltage. The transistor is of type BD137 NPN. On the underside of the cap, you have to make the connections between the components following the tracks with the channels. The positive cable input is made through a side hole that connects to the track marked with the "+" sign. The other side hole is for the negative pole entry. The ladrón de juleps output coincides with the LED terminals. The short terminal (negative) must be placed on the side of the switch.