540,523 active members*
1,770 visitors online*
Register for free
Login
IndustryArena Forum > Other Machines > CNC Wire Foam Cutter Machines > I need help for select power supply for hot wire
Results 1 to 2 of 2
  1. #1
    Registered
    Join Date
    Feb 2007
    Posts
    190

    I need help for select power supply for hot wire

    Hello every one
    Iam beggining a small cnc foam cutting machine
    Cutting area 40” x 30”
    Wire lenght max 35”

    The machine body and cnc moving is not a big problem,
    I have built some cnc routers and this part is fine.

    I have Nichrome wire Rene 41 cal 27, from Jacobs,
    4.02 Ohm/foot

    I need help to select the power supply for heat rhe
    Wire.
    In jacobs online calculator for that single wire lenght
    Transformer Should be 25v and 2.6 A.

    I have some transformers, but I don’t know wich one
    I can use.

    1- A Power Electric RT-625A transformer
    I think it was from an old Back UPS.

    2- Switching Power Supply .
    HSTNS- PD02
    Mod- DPS-700CB A
    Output 775 W -12V 64.5A

    3- A small welding stick machine that gives
    Arpund 30V and can hold 200A

    4- A complete APC 500 Back UPS
    without the battery

    For different wire lenght
    I think to build a voltage regulator
    using a Triac 600V 35A.

    Can you help me to select the right transformer

    Thanks in advance for read and help me
    Sorry my bad english

  2. #2
    Registered
    Join Date
    Nov 2013
    Posts
    3

    Re: I need help for select power supply for hot wire

    I have made one of those before and would suggest something like this to control the power going to the wire. It is basically an industrial dimmer switch and could possibly work without a transformer. Crydom may have products better suited to your particular application. This will get you pointed in the right direction at least. Come to think of it, you might try using a dimmer switch if you can get the wire hot enough with the 1 amp or so that they are rated for.
    Good luck
    http://www.crydom.com/en/products/ca...al-control.pdf

Similar Threads

  1. To wire a new power supply
    By jaymez10 in forum Laser CO2 Tubes, Diodes, RF and Power Supplies
    Replies: 1
    Last Post: 08-22-2017, 04:53 PM
  2. Replies: 4
    Last Post: 01-24-2017, 11:08 PM
  3. How Do I Wire This Power Supply?
    By herring_fish in forum General CNC Machine Related Electronics
    Replies: 2
    Last Post: 04-06-2012, 03:05 PM
  4. derate stepper and select power supply
    By bullethead67 in forum Bridgeport / Hardinge Mills
    Replies: 5
    Last Post: 02-27-2010, 09:04 PM
  5. power supply size? for multi wire (total 250 inches of wire)
    By DanOSB in forum CNC Wire Foam Cutter Machines
    Replies: 5
    Last Post: 03-02-2009, 11:34 PM

Tags for this Thread

Posting Permissions

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