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resistance

  1. LED SMD Car Dome Interior

    Technical Discussion
    Got sight on LED Car Dome Interior lights from Ebay. The image is shown below: Its voltage and current specifications are: Voltage: 12V: for Cars, Motorbikes and Caravans Power: 1.5W Since I am using 12 V. using the calculator I calculated the amount of resistance which it offers...
  2. Internal resistance, temperature, usable energy, and efficiency

    Batteries and Charging
    In a current thread on battery pack problems I noted that Lithium cells may have a temperature coefficient for the charging and open cell voltage, but also there may be effects from internal and external resistance. So I found a thread where a chart was supplied with internal resistance as a...
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