led polarity
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reverse polarity protection for your circuit without the diode voltage drop diode circuit protection
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polarity indicator using back to back leds with blocking diodes positive dc input voltage green led on red led off negative dc inpu green led diodes red led
simpler way to connect dc jack use separate wires to connect the dc jack to the battery after you connect the led wires from the switch led hoops led recharge
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these can either be 3mm or 5mm leds a 220 ohm resistor will work for voltages around 12v for digital led projects simple electronics electronics projects diy


























