The led downlight is low power consumption, long life, low temperature, and its workload more than the traditional light sources. Compared with incandescent bulbs, LED is polarized, and only in a correctly wired illuminated. Here is connected in series with a basic understanding of LED lights, including power and the ability to use a calculator.
1. Determine the voltage of the power supply. An LED connected in series, the available consumption volts, leaving fewer volts in the series of the remaining of the LED. Therefore provides a voltage determines the number of LED, you can connect a series circuit
2. Calculated by dividing the maximum number of LED single LED forward voltage (Vf) of the battery voltage. For example, if the LED forward voltage of 3.4 volts, the battery is 24 volts, with seven series of the LED, as 24/3.4 = 7.05. Never exceed the available voltage. When the combination of the LEDs is when the voltage is lower than the battery voltage, find a combination of the LED voltage minus the battery voltage differences. Write down this value.
3. Welded or otherwise attached battery clip at one end of the wire. This line will be connected to the positive side of the power supply. Long legs welded wire the other end of the first LED. The longer leg of the LED is always a positive side. LED solder the other in a line with the increase of wire between them if desired, the wiring to the negative leg is always in front of the LED forward legs.
4. Wire bonding the LED negative final legs. If the LED voltage is exactly equal to the combined power supply voltage of the battery clip attached the other end of the wire and then connect it to the battery, to complete the two circuits of the battery holder.
5. Add a resistor circuit, if not exactly match the LED voltage, battery voltage. Find the current drawn by the LED reading technical data sheet. Dividing the voltage difference is established in step 2, the current through the LED in amperes. The answer is added to the value of the resistor circuit. For example, 3 volt voltage difference LED current of 0.02 amps for a 150 ohm resistor. The resistor is connected, the last LED of the legs and between the negative battery terminal anywhere.
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