Where To Solder Resistor On Led

When the solder melts remove the iron. A basic instruction for electronic enthusiasts.

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Add a small solder bead to each pad of the leds.

Where to solder resistor on led. Then repeat with the other wire on the other leg. Solder one end wire 2 to side b of the first resistor. To choose your resistor the value in ohms voltage of your batteries or power supply as in divided by the amperage that your led needs to run.

Do this with just one of the leds. I use an rgb led and a 510 ohm resistor as i may change from 6 to 9 volts later but with my leds i could go as low as 330 ohms. Solder the free end of wire 2 to side a of the second resistor.

Just a small dab is all that is needed. A solder pot would make it go much faster. Hold the wire steady until the solder solidifies.

How to solder a led to a resistor. The short lead of the led is the cathode negative lead. Hold the magnet wire on the led pad and heat with soldering iron.

Solder one end of a copper wire to the remaining resistor lead. In a series circuit the current is the same for all components and because the led and the resistor are in series you can connect them as you want. Solder the free end of wire 3 to the negative terminal of the battery to complete the series circuit.

Solder one end of wire 3 to side b of the second resistor. Resistors are non polar so either end will do. Take one of the wires red if youre color coding and do the same twist and solder procedure to the free end of the resistor.

A standard point to point connection is two leads lets say the cathode of an led and the anode of a second led twisted and soldered together. Solder is a conductive material that melts around 400 degree fahrenheit and allows two pieces of metal to connect in a circuit. This is the most time consuming step.

Therefore polarity must be observed in the connections. It doesnt matter if place the resistor before or after the led because is the amount of current the resistor limits as not to burn the led. Leds however are polar.

This is more efficient than simply just twisting leads together. Solder one lead of the resistor to the short lead of the red led.