Reducing direct Line powered 120vac supply from 170 to 150 vdc

Results 1 to 1 of 1

Thread: Reducing direct Line powered 120vac supply from 170 to 150 vdc

  1. #1
    Member
    Join Date
    Feb 2007
    Location
    canada
    Posts
    962
    Downloads
    0
    Uploads
    0

    Default Reducing direct Line powered 120vac supply from 170 to 150 vdc

    I get a lot of people who want to run their servo motors directly from line voltage without a transformer.
    Here is a way to reduce the voltage output from the direct 169 VDC that you would get if you directly rectified the 120 (120 x 1.141)= 169 Vdc

    Using the secondary of a 12 volt (or greater) transformer out of phase with the 120 volts, it will subtract 12vac volts and give 108 VAC (just as you would get 132 vac (120+12) if it was in phase )


    You can also add a In-rush current device to the 120v input to help reduce surge current when power is first applied such as this one
    Digikey part # 570-1062-ND

    Larry K

    Similar Threads:
    Attached Thumbnails Attached Thumbnails Reducing direct Line powered 120vac supply from 170 to 150 vdc-reducing-120vac-108-jpg  
    Manufacturer of CNC routers and Viper Servo Drives
    www.LarkenCNC.com and www.Viperservo.com


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
  •  


About CNCzone.com

    We are the largest and most active discussion forum for manufacturing industry. The site is 100% free to join and use, so join today!

Follow us on


Our Brands

Reducing direct Line powered 120vac supply from 170 to 150 vdc

Reducing direct Line powered 120vac supply from 170 to 150 vdc