| 摘要 |
There is disclosed a type of interchangeable LED (light emitting diode) bulb as well as methods for making the said type of interchangeable LED bulb. A resistor is connected in series to an LED to form an interchangeable LED bulb. Two interchangeable LED bulbs are coupled in parallel and with the same polarity to form a light module. The reliability of light module is improved as a result of parallel configuration; flexibility of light module is also improved in terms of bulb replacement and color change. When two LED bulbs with different electrical characteristics are coupled in parallel to assemble a light module, the resistors can compensate the forward voltage difference of the two LEDs, LED bulbs of different color can thus be interchanged with each other. A light string by connecting such light modules in series and methods for making the said light string are also disclosed.
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