why it needs a transistor?

Reply to Thread

Discussion in 'General Electronics Chat' started by zzz, May 25, 2005.

Reply to Thread
  1. May 25, 2005 #1
    zzz

    Thread Starter New Member

    Dec 1, 2004
    6
    0
    I pulled apart an old dc to dc converter when i bought a new one that had more
    outputs. the old one had 12v in and 9,7,4.5, and 3 volt out. there are six resistors
    in there and one LM13---- transistor. I expected to see the resistors for the voltage decrease but i dont see why the transistor is in there. just curious.
     
    #1 Reply
  2. May 25, 2005 #2
    mozikluv

    AAC Fanatic!

    Jan 22, 2004
    1,437
    1
    hi

    i believe that's an LM134. that is an adjustable current source and likewise a floating current source.
    :D :p
     
    #2 Reply
Loading...
Related Forum Posts:
  1. Sally S

    Homemade aluminium foil capacitor - why doesn't it hold a charge ?

    Posted by Sally S in forum: General Electronics Chat
    Replies:
    60
    Views:
    3,574
  2. edaferigho

    A newbie needs help!!!

    Posted by edaferigho in forum: General Electronics Chat
    Replies:
    4
    Views:
    863
  3. richiechen

    Comparing with an opamp, why a transistor

    Posted by richiechen in forum: The Projects Forum
    Replies:
    3
    Views:
    1,595
  4. cpu_user

    Why is it impossible?

    Posted by cpu_user in forum: Physics
    Replies:
    39
    Views:
    6,244
  5. kalikid1210

    Santa needs a Sensor!

    Posted by kalikid1210 in forum: General Electronics Chat
    Replies:
    8
    Views:
    2,133
You May Also Like:

  1. Custom PCB Design with an EFM8 Microcontroller

  2. Lithium-Ion Shipping and Travel Regulations: What You Need to Know

  3. An Introduction to Companding: Compressing Speech for Transmission Across Telephone Systems


Load More Articles