Copper Talk » Ask The Tech » Meters » Dosy TC-4001-P test center power modification « Previous Next »

Author Message
Top of pagePrevious messageNext messageBottom of page Link to this message

Flashcube
New member
Username: Flashcube

Post Number: 1
Registered: 4-2010
Posted on Tuesday, May 18, 2010 - 7:42 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Dosy TC-4001-P test center power modification -

Hello to fellow forum members,

As a new member, I wanted to share some insight on a modification to a piece of test equipment, which I own;

I while back purchased a Dosy TC-4001-P test center a while ago (seems like a very decent meter, I’m very happy with it!)

However, it seemed inconvenient to have to run the small 12v. wall pack power supply, which I felt was unnecessary

when I had a great steady 12v. source, right at my fingertips. My radios power supply!! It is always shutdown when I

shutdown my station! Great I will be greener that is a little more efficient if you will) & run my meter from the power supply

directly. Cool energy saving idea right!

The answer is YES! Nevertheless, I strongly recommend that this with this simple modification be made.

Change the 1/8 phone plug & jack that the test center has to the following:

Size M Coaxial plug & jack – the center pin is the positive + connection. No sparking worries, when plugging it in

to the 12v. source.

Unlike my original modification, making a jumper cord with the 1/8 plug (center tip +12v.) which WILL spark if

Connected or disconnected to a running supply, as is the Case of the test center is at the 12v ground, in the circuit.

However, the coaxial type connector eliminates this hazard. I have also added a 2-amp inline fuse to the jumper cord

on the + center pin side. You also can make an adapter for your vehicle, using this jumper. (center pin to +)

You will need to change out the test centers original phone jack, to the size M coaxial jack. Much safer!!

Almost any size coaxial plug & jack will work well for this handy modification, that not critical.

I hope someone finds this posting helpful.

“Flashcube”

Mark
Top of pagePrevious messageNext messageBottom of page Link to this message

Tech808
Moderator
Username: Tech808

Post Number: 17660
Registered: 8-2002


Posted on Friday, May 21, 2010 - 3:10 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Mark ~ Flashcube,

Welcome to the Copper Electronics Forum and thank's for the Mod.
Lon~Tech808
N9CEF
CEF#808

Radio Enthusiast!


Add Your Message Here
Post:
Username: Posting Information:
This is a private posting area. Only registered users and moderators may post messages here.
Password:
Options: Enable HTML code in message
Automatically activate URLs in message
Action: