1. Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
    Dismiss Notice

ecg 957 voltage regulator spec sheet

Discussion in 'Datasheets, Manuals or Parts' started by inkedallusion, Jan 4, 2003.

  1. inkedallusion

    inkedallusion New Member

    Joined:
    Dec 16, 2002
    Messages:
    11
    Likes:
    0
    I am building a power supply with an philips ecg 957 voltage regulator in place of a LM 317 voltage regulator. I am not sure what polarities I should change on the circuit- does anyone know where I can get a spec sheet?
     
  2. Phasor

    Phasor Member

    Joined:
    Aug 14, 2002
    Messages:
    703
    Likes:
    0
    Location:
    Sydney, Australia
    ECG957 is equivalent to LM337. So here is a datasheet for the LM337.

    http://www.electro-tech-online.com/custompdfs/2003/01/LM137.pdf

    The LM317 is a positive regulator, whereas the LM337 (ecg957) is a negative regulator.

    I've never actually tried using a negative regulator in place of a positive. Maybe someone else can fill you in on how-to. If you're just making a bench supply, I guess you just use the ground as your +ve and the output as your -ve (where both are isolated from earth).
     

Share This Page