Home
JAQForum Ver 24.01
Log In or Join  
Active Topics
Local Time 23:47 28 Nov 2024 Privacy Policy
Jump to

Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me.

Forum Index : Electronics : tip41c

Author Message
irishron40
Senior Member

Joined: 22/09/2014
Location: Ireland
Posts: 251
Posted: 01:46am 09 Jun 2015
Copy link to clipboard 
Print this post

would it be fine to use 2 tip41c transistors insted of 2 tip3055 for power supply?

have two of these and think they are a newer model then tip3055 , but not sure.

hard tofind anything on google about suplimenting them.

thx

ron
 
powerednut

Senior Member

Joined: 09/12/2009
Location: Australia
Posts: 221
Posted: 01:58am 09 Jun 2015
Copy link to clipboard 
Print this post

Depends on how many amps you need. 2n3055s have a max current of 15A or so? tip41cs maxs out to 6A
 
irishron40
Senior Member

Joined: 22/09/2014
Location: Ireland
Posts: 251
Posted: 02:10am 09 Jun 2015
Copy link to clipboard 
Print this post

my transformer is rated 11 amp. i dont think i would ever use more then 5 amp , so two tip41c should be fine

thank you

ron
 
irishron40
Senior Member

Joined: 22/09/2014
Location: Ireland
Posts: 251
Posted: 02:18am 09 Jun 2015
Copy link to clipboard 
Print this post

am i correct in thinking that if transformer is rated 11 amp that that would be the max regardless how many tip s i use
 
geraldfryjr

Regular Member

Joined: 02/03/2014
Location: United States
Posts: 61
Posted: 04:09pm 09 Jun 2015
Copy link to clipboard 
Print this post

No, any transformer is certainly capable of producing more current than what it is rated for.

The main thing that limits it is are its internal losses and winding resistances.

In my supply even though the transformer I have is rated for 18v at 2 amps I can get at least 3.5-4 amps out of it at 14v of output voltage after the regulator.

However it does get quite warm (hot) after a short period of time under those conditions. ;)

jer :)
Keep on DIYin' !!!
 
powerednut

Senior Member

Joined: 09/12/2009
Location: Australia
Posts: 221
Posted: 07:51pm 09 Jun 2015
Copy link to clipboard 
Print this post

You may want to use more than 2 tip41cs. One more will allow you to distribute the heat a little more and will give you a little more headroom between the transistors max current and your actual. The tradeoff will be between the cost of the heftier heat sinks and the cost of the additional transistor (and heatsink).

*edit* whoops, I missed your 5A max comment. I'd think two 41c transistors should be fine for that. I havn't actually read the datasheet or gone through the design process. You may want to do that.Edited by powerednut 2015-06-11
 
Print this page


To reply to this topic, you need to log in.

© JAQ Software 2024