diyAudio

diyAudio (http://www.diyaudio.com/forums/)
-   Chip Amps (http://www.diyaudio.com/forums/chip-amps/)
-   -   Tube 6N3 Preamp TDA7294 Power Amplifier Kit DIY 80W+80W (http://www.diyaudio.com/forums/chip-amps/207766-tube-6n3-preamp-tda7294-power-amplifier-kit-diy-80w-80w.html)

simenms 28th February 2012 09:53 PM

Tube 6N3 Preamp TDA7294 Power Amplifier Kit DIY 80W+80W
 
I have just finnished this kit from E-bay:

Tube 6N3 Preamp TDA7294 Power Amplifier Kit DIY 80W+80W | eBay

it has one 24v-0-24v input and one ac 9-12v input.. do i need two transformers or could i only use the 24v input?

Minion 28th February 2012 11:06 PM

If it says a 24v-0v-24v AND 9-12v then that is what is needs , it doesn"t say 24v-0v-24v and 24v ........

The 24v-0v-24v is used for the Poweramp and the Plate of the Tube , the 9v-12v is used for the heaters which is regulated to 6v with a lm7806 ....... if you use 24v you will fry the regulator .......

Get a transformer with an extra 9v-12v winding or use a seperate small transformer or even an AC wallmart ......

simenms 28th February 2012 11:45 PM

ok.. thanks!

han6man 16th March 2012 11:48 PM

are you have circuit ore assembly manual of this board?
i bought one & package without them

simenms 17th March 2012 08:13 AM

yes, got it in the package.. i managed to kill my amp chips with the wrong voltage.. but new ones are soon here... let me know if you need the schematics..

han6man 18th March 2012 07:12 AM

i am very nead )
you kill amp chips with the wrong voltage( +- or Vmax)?

han6man 18th March 2012 08:54 AM

if you can to email plz
han6man & gmail.com

simenms 20th March 2012 09:35 PM

vmax killed it.. there is no +/- since it is ac..

Gost22 14th September 2012 06:06 AM

Schematics for hybrid amplifiers
 
Quote:

Originally Posted by simenms (Post 2927010)
I have just finnished this kit from E-bay:

Tube 6N3 Preamp TDA7294 Power Amplifier Kit DIY 80W+80W | eBay

it has one 24v-0-24v input and one ac 9-12v input.. do i need two transformers or could i only use the 24v input?

Hi simenms!
Is the schematic (circuit), you can view this hybrid amplifier?
thank you

Inprogress 6th August 2013 11:50 AM

How did the sound turn out on this kit? Looking at buying one.


All times are GMT. The time now is 06:00 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio


Content Relevant URLs by vBSEO 3.3.2