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  1. E

    Looking for a specific transformer

    Lead acid
  2. E

    Looking for a specific transformer

    Is the amperage too high?
  3. E

    Looking for a specific transformer

    I know what im making probably already exists but i enjoy the build and learning about electronics. Plus it would be a nice thing to have around
  4. E

    Looking for a specific transformer

    Yes i realize the voltage has to be rectified. Thats not the part of the circuit in question. Ive put some thought into it. If i want to charge a twelve volt battery i need around 15V. But finding that transformer has proved nearly impossible. 120v to 30v has been much more common. Seeing im...
  5. E

    Looking for a specific transformer

    30 vac is just a healthy voltage above what i need. Its a much more common transformer as far as ive seen. Of course i understand i have to rectify the voltage to DC first. Power will go through a potentiometer before it is feed into any battery. That is the goal of the design. A variable...
  6. E

    Looking for a specific transformer

    So just to give some closure to this topic ive done the math and studied more on the theory of what im doing. Ive worked from the load backwards and came to the conclusion: the transformer im looking for is more like a 120vac to 30vac rated for 10A. (300W) I really appreciate all the input and...
  7. E

    Looking for a specific transformer

    Wow thank you! This is a lot of information. I will definitely look it all over. It seems pretty close to what im thinking of
  8. E

    Looking for a specific transformer

    Thanks. That sounds like what its coming down to
  9. E

    Looking for a specific transformer

    Thank you. I will try this.
  10. E

    Looking for a specific transformer

    I really want 15Vac. But i am having trouble finding a vendor with the transformer i need.
  11. E

    Looking for a specific transformer

    If i could find one that even knocks the voltage to 30vac i can go from there. I just want the amperage. I cant work with 3A.
  12. E

    Looking for a specific transformer

    So when i look for power rating on a transformer. I should focus on the output power? Thats what im gathering so far
  13. E

    Looking for a specific transformer

    A battery charger that involving a potentiometer that could adjust the voltage. I guess a "variable output" battery charger is what i would call it
  14. E

    Looking for a specific transformer

    I guess i was thinking on the wrong end of the transformer. I was thinking of the maximum power that can be pulled from the wall. 15A at 120V gave me 1800 watts. Thats why i thought that
  15. E

    Looking for a specific transformer

    What is that?
  16. E

    Looking for a specific transformer

    So just so we all know what im going for... Im trying to design a variable voltage battery charger. Some that ive seen pull as much as 30 amps. Im not sure if i need all that current. Maybe ill look into making it so i can make amperage variable as well. If this is throwing up any red flags let...
  17. E

    Looking for a specific transformer

    Ok so this might be the best way. Since 15Vac doesnt seem to be very common.
  18. E

    Looking for a specific transformer

    I apologize for the confusion. 120V×15A=1800watts. I dont know exactly what kind of power ill be pulling yet, so i just figured this... I can pull 15A at 120V before i flip a 15A breaker. So 1800 watts seems like the power rating i would need. I hope im making sense.
  19. E

    Looking for a specific transformer

    Ok so im not just multiplying voltages. I thought the formula was clear. Voltage×Amperage=Wattage (V×I=P). I figured thats as much power as i can pull from a 15 amp breaker before it flips. (120v×15A=1800watts)
  20. E

    Looking for a specific transformer

    I was more thinking about being safe by assuming the maximum i would possibly draw out of the wall (15 amps) so 1800 watts is as high as i would possibly need to protect against if there was a surge. Any higher than that and the breaker would flip.
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