Results 1 to 7 of 7

Thread: Question about Renco Transformers

  1. #1
    Maximum Bitrate
    Join Date
    Oct 2001
    Location
    Ontario, Canada
    Posts
    845

    Question about Renco Transformers

    I noticed that the Coilcrap Q4339-B T6 (oh jeeze, I did it again, I meant CoilCraft) can provide 1.2A at 12V, however the Renco RL-5533 can only provide 0.63A? Or am I reading the (extremely limited) spec sheet wrong?

    Sorry, I'm bitter with Coilcraft. They charged me huge for shipping/handling (they told me $10 in the email, when I get my credit card bill I got charged for $35, they never told me in the email that I was to be charged $20+ for shipping/handling), and then ON TOP of this, they use UPS (die die die!) which charges you another $20 for the honor of delivering any package for you across the border (I'm in Canada, but prices quoted in USD). I wasn't home when my package came, so my roommate paid for it.

    Yeah so I paid $55 for some stupid samples that were supposed to cost $10... Boy was I angry.
    IN DEVELOPMENT -- '96 Mustang, lilliput with PII/450 laptop, custom DC-DC power supply, 60GB; Garmin GPS; 802.11g; compact keyboard, small graphical LCDs, OBDII.

  2. #2
    Maximum Bitrate PTCruiser's Avatar
    Join Date
    Oct 2002
    Location
    Switzerland
    Posts
    476
    Ouch...

    I can buy as much T6 that I want for 4.5 euro...(~4.5 $)

    I already order 30 of them...
    Epia M9000, lili 7" vga&touch & 2xTM-7002S compo, camera with reversed image, 2.5" 60 GB, 256Mb DDR, Opus 90W, GPS usb... AND MEDIACRUISER of course!

  3. #3
    Maximum Bitrate
    Join Date
    Oct 2001
    Location
    Ontario, Canada
    Posts
    845
    as in 4.5EUR each or 4.5EUR for as many as you want?!
    IN DEVELOPMENT -- '96 Mustang, lilliput with PII/450 laptop, custom DC-DC power supply, 60GB; Garmin GPS; 802.11g; compact keyboard, small graphical LCDs, OBDII.

  4. #4
    Newbie dsoares's Avatar
    Join Date
    Aug 2002
    Location
    VITORIA-ES-BRAZIL
    Posts
    37
    Originally posted by PTCruiser
    Ouch...

    I can buy as much T6 that I want for 4.5 euro...(~4.5 $)

    I already order 30 of them...
    PTCriuser,

    Could you sell me 2 of these transformers?

    Thanks,

    Diego

  5. #5
    Maximum Bitrate
    Join Date
    Oct 2001
    Location
    Ontario, Canada
    Posts
    845
    Sofar nobody has answered my question though: What is the power output capability of the T6 transformer in comparison to the Renco one?

    Additionally, can you use more than one transformer with a single LM2587T-12 in order to get closer to the 5A output ability of the LM2587T-12? Or are there any other transformers that we can use that would be better suited?
    IN DEVELOPMENT -- '96 Mustang, lilliput with PII/450 laptop, custom DC-DC power supply, 60GB; Garmin GPS; 802.11g; compact keyboard, small graphical LCDs, OBDII.

  6. #6
    Maximum Bitrate PTCruiser's Avatar
    Join Date
    Oct 2002
    Location
    Switzerland
    Posts
    476
    Additionally, can you use more than one transformer with a single LM2587T-12 in order to get closer to the 5A output ability of the LM2587T-12? Or are there any other transformers that we can use that would be better suited?
    LM2587T-12 is 22W max...

    Check the linear website and use webench for your design...
    (~12V 1.8A max...)

    The limitation is not the Transformer!

    I had the same idea in the begining to use the both input of the T6 with one LM2587T-12
    Epia M9000, lili 7" vga&touch & 2xTM-7002S compo, camera with reversed image, 2.5" 60 GB, 256Mb DDR, Opus 90W, GPS usb... AND MEDIACRUISER of course!

  7. #7
    Maximum Bitrate
    Join Date
    Oct 2001
    Location
    Ontario, Canada
    Posts
    845
    The LM2587T-12 is 5A max, but it depends what the difference between your input and output voltages for how much you can actually get out of it.

    If you raise the minimum Vin to 9.65 you can get 2A out of it.

    So then can you use 1 transformer with 2 LM2587T-12's?

    Also, does this mean that we can design this thing so that the higher the imput voltage, the more power we can get out?
    IN DEVELOPMENT -- '96 Mustang, lilliput with PII/450 laptop, custom DC-DC power supply, 60GB; Garmin GPS; 802.11g; compact keyboard, small graphical LCDs, OBDII.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •