Provador de leds con Display
youmagine
This is a new version of the LED tester that I posted at: https://www.youmagine.com/designs/probador-de-led-s In this case, I have removed the metal terminals that were used to measure voltage with a tester and put in a display that already gives us the reading of the tension without needing an external voltmeter. In the version without a display, it was not necessary for any switch since only the circuit closed when we placed the LED on female dupont connectors. However, so that the display is not always connected, I have put in a switch to turn it on and off. This way, it does not consume current when we store it with the 9V battery attached.
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