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Transitioning EL Wire from 3V Battery Power to 12V Car Supply: Voltage Conversion

kadrewi 3816 15
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
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  • #1 16258251
    kadrewi
    Level 8  
    I know that the topic has been rolled out several times, but I did not find a meaningful answer. I want to attach a glowing El wire cable to the car, by default it is powered by two batteries - a total of 3v, and the car is 12v. I found a lot of solutions but up to 5v, but it's a bit too much. In the subject I am completely green, several projects for arduino and that's it: /.
    Do you have a problem with Arduino? Ask question. Visit our forum Arduino.
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  • #2 16258304
    cyann
    Level 20  
    Solutions a lot. Resistor, zenerka, linear regulator.
    But most effectively (read you will get the most efficiency) will use a step-down converter.
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  • #3 16258314
    kadrewi
    Level 8  
    The resistors are closest to me, I tried to connect a 1000 Ohm resistor, but it did not work
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  • #4 16258341
    cyann
    Level 20  
    kadrewi wrote:
    I tried to connect a 1000 Ohm resistor but it didn't work

    And where did you get the resistor value from? Have you taken into account the current consumed by the device, or did you "watch"?
  • #5 16258355
    kadrewi
    Level 8  
    There was a similar project on some forum, they used 1k Ohm there. There is no current or anything on the "device" itself
  • #6 16258371
    cyann
    Level 20  
    If you insist, you can connect the appropriate power supply in series with the ammeter. You would have more or less the current and could calculate the appropriate resistor value (also pay attention to the power).
    However, I recommend using a step-down converter, it may be one with regulated output voltage. You set it to 3V and you have a problem with your head.
  • #7 16258402
    kadrewi
    Level 8  
    Now I was checking the intensity, it is 0.6 A on standard batteries
  • #8 16258510
    cyann
    Level 20  
    Well, try to convert it from Ohm's law, because with a 1k resistor I am not surprised that it did not work.
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  • #9 16258529
    kadrewi
    Level 8  
    From my calculations it came out that the resistor should have 18 Ohm, does it make sense to assume such a small value?
  • #10 16258560
    cyann
    Level 20  
    Of course. Just remember to choose the right resistor power.
  • #11 16259014
    jarek_lnx
    Level 43  
    El wire requires high voltage, which means that there is an inverter somewhere.

    A solution with a serial resistor is not safe, the inverter does not behave like a resistor and the degree of division of such a divider can change.

    For example, if moments after switching on consumes less current, it will get a voltage higher than 3V and may be damaged.
  • #12 16260775
    kadrewi
    Level 8  
    Thanks for all the advice, I tried with this 20 Ohm resistor, but only the smoke from the transducer flew - I do not recommend it for the future. I will order a new transformer and connect the inverter to this
  • #13 16416998
    klepka-l
    Level 13  
    The EL Wire is powered by 200mA, 90-120VAC 2000Hz
  • #14 16449538
    kot-one
    Level 9  
    Is uncovered.

    So the power supply plugged into the socket having values at the 3v / 200mA output will be good?
  • #15 16449548
    cyann
    Level 20  
    kot-one wrote:
    Is uncovered.

    So the power supply plugged into the socket having values at the 3v / 200mA output will be good?


    And what are your parameters at the El wire input?
  • #16 16451316
    kot-one
    Level 9  
    cyann wrote:
    And what are your parameters at the El wire input?


    I don't have any because I haven't bought it yet. For now, I wanted to know what it looks like. And judging by this post, El Wire is not described
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Topic summary

The discussion revolves around transitioning EL wire, typically powered by 3V batteries, to a 12V car supply. Users explore various solutions, including resistors, zener diodes, linear regulators, and step-down converters. A step-down converter is recommended for efficiency, allowing the output voltage to be set to 3V. The importance of calculating the correct resistor value based on current consumption is emphasized, with suggestions to use an ammeter for accurate measurements. Concerns are raised about using resistors alone due to the potential for voltage spikes damaging the inverter. One user reports unsuccessful attempts with a 20 Ohm resistor, leading to smoke from the transducer, prompting a shift to using an inverter. The EL wire specifications include a requirement of 200mA at 90-120VAC and 2000Hz.
Summary generated by the language model.
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