Welcome To the Hoffman Amplifiers Forum

September 08, 2025, 01:37:46 pm
guest image
Welcome, Guest. Please login or register.
-User Name
-Password



Hoffman Amps Forum image Author Topic: Easy PT question      (Read 3198 times)

0 Members and 1 Guest are viewing this topic.

Offline Geezer

  • Level 4
  • *****
  • Posts: 3680
  • Groov'n Tube'n KOOK (Keeper Of Odd Knowledge)
Hoffman Amps Forum image
Easy PT question    
« on: June 17, 2005, 09:41:29 pm »

  Hoffman Amplifiers
    > Tube Amp Building - Tweaks - Repairs
        > Easy PT question      
 
<< Prev Topic | Next Topic >>  
Author  Comment  
Wanabejimi
Junior tube assistant
Posts: 54
(3/1/04 7:12 pm)
 Easy PT question
--------------------------------------------------------------------------------
 I have an old PT that I would like to use. The secondary has three red taps. One of them is obviously the center tap. How do I tell which one?
 
ganzonimx
Hey get your own solder
Posts: 415
(3/1/04 8:19 pm)
 Re: Easy PT question
--------------------------------------------------------------------------------
 Hook up a small transformer (5 - 10 VAC) to the primaries and look what you find on the other side ...

Cris
 
Rotting27
Posts: 124
(3/1/04 11:49 pm)
 Re: Easy PT question
--------------------------------------------------------------------------------
 Or a much easier method:

Check the resistance between two leads at a time. The two with the highest resistance between them is are not the centertap.
 
 
 << Prev Topic | Next Topic >>

 

 Topic Commands
 Click to receive email notification of replies
  
jump to:  Tube Amp Building - Tweaks - Repairs (New)New Product Suggestions (New)Praises - Complaints - Suggestions (New)Buy - Sell- Trade (New)Archives (New)    
 

- Hoffman Amplifiers - Tube Amp Building - Tweaks - Repairs - Hoffman Amplifiers -



Powered By ezboard® Ver. 7.32
Copyright ©1999-2005 ezboard, Inc.
   Cunfuze-us say: "He who say "It can't be done" should stay out of way of him who doing it!"

 


Choose a link from the
Hoffman Amplifiers parts catalog
Mobile Device
Catalog Link
Yard Sale
Discontinued
Misc. Hardware
What's New Board Building
 Parts
Amp trim
Handles
Lamps
Diodes
Hoffman Turret
 Boards
Channel
Switching
Resistors Fender Eyelet
 Boards
Screws/Nuts
Washers
Jacks/Plugs
Connectors
Misc Eyelet
Boards
Tools
Capacitors Custom Boards
Tubes
Valves
Pots
Knobs
Fuses/Cords Chassis
Tube
Sockets
Switches Wire
Cable


Handy Links
Tube Amp Library
Tube Amp
Schematics library
Design a custom Eyelet or
Turret Board
DIY Layout Creator
File analyzer program
DIY Layout Creator
File library
Transformer Wiring
Diagrams
Hoffmanamps
Facebook page
Hoffman Amplifiers
Discount Program