Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Solid State Talk all about solid state amplification.

p400 382w8ohm
p400 382w8ohm
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 1st May 2004, 01:55 PM   #1
malan is offline malan  Zimbabwe
diyAudio Member
Join Date: May 2004
Location: ANKARA
Post p400 382w8ohm

I'm afraid to use this amp with tip41-42c drivers under 2*65 volt dc.Because their limits are 115volts dc.
Can I use Mje15030-31 (or mje340-350 I know characteristics are different but...)as a driver for mj15003and15004

And is this a true way for bias setting of an amplifier;feeding the amp ,first disconnecting the output transistors voltages and setting the base voltages of output transistors to 0,5volt with bias trimmer without adjusting the current.Because mostly we dont know the current degrees of amplifiers.
  Reply With Quote
Old 2nd May 2004, 12:30 AM   #2
djk is offline djk
djk's Avatar
Join Date: Feb 2001
Location: USA
The Vceo(sus) of the TIP41C/42C at IC=30mA is only 100V

With 10% saftey margin for line voltage variations you should run no more than 45V on this part.

The MJE15030/31 should be fine as drivers, above 67V use the MJE15032/33

Because of counterfeit MJ15003/04 transistors, consider using MJ21193/94 purchased only from an authorized ON Semiconductor distributor.

If you must use the MJ15003/04, buy an extra and take it apart to verify that it is real.

Look at the pictures carefully:

  Reply With Quote


p400 382w8ohmHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

New To Site? Need Help?

All times are GMT. The time now is 06:49 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 17.65%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio