Connect with us

Full Wave 12v Rectifier Help

Discussion in 'General Electronics Discussion' started by jonesi100, Mar 25, 2014.

Scroll to continue with content
  1. jonesi100

    jonesi100

    2
    0
    Mar 25, 2014
    I need some help building a full wave bridge rectifier. I need to install a resistor(s) (apparently) to get potential difference, but I don't treacly understand why. Anyway, without explaining the physics, please could anyone tell me what resister value in Ohms and what wattage value would I need if I installed a resister in position R0, before the LED's (all of which are 1.8w and approx 160mA), or should I install a resister at positions R1 R2 and R3.
    Ideally, I just want one, but can you advise on the specs please and how to calculate if the LED ratings change?
    Please look at attached diagram
     

    Attached Files:

    Last edited: Mar 26, 2014
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,412
    2,780
    Jan 21, 2010
  3. jonesi100

    jonesi100

    2
    0
    Mar 25, 2014
    Hi Steve

    Thanks for your reply. They are in a cooker hood and the 1st bulb (currently all G4 halogens) rectifies the rest. I cannot get inside the hood, only the lamp holder. I bough DC LEDs, not realising it was an AC supply. Any advice appreciated.

    Regards

    Ian
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-