Vlad.
Full Member level 3
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Hello guys, I`m no verry old on this forum and a prezent one of my project `atx power suply modificated for 5x tda7294 audio amplifier`.
I have modificated about 60% component on this atx, I will not prezent this but I show you my final project(You can contact me on pm for details). I make conversion on the final stage with fast conversion brigde maked from 3x FIC1620(16A, 200v fast diode-double) for +-.
I use the auxiliary power suply from this atx source for alimentation of tl494 and ventilators.
The maximum power collected was 18A at 32v for 100 seconds(16v at branch), anyway on this stage all componens was verry hot.
**broken link removed**
free picture hosting
Next step I was collected 10A at 46v(23v on each branch) for 40 minutes. The power source is capable to deliver this power only if she have a good ventilation like a tunel or like a computer cpu.
**broken link removed**
photo hosting
On this next stage i was collected continous 6A for 1h and 30 minutes at 48v (24v for each branch), on this stage the is capable to deliver suficient power for 5x tda7294. The heatsink was 45 degrees Celsius with fans at 5v.
**broken link removed**
upload photo
Another images on work.
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The power tranzistors are MJE13009 in TO-247 for a good disipation. I use in primary 2x 680uF and the bridge is 10A/1000v. The core is EI-33 with not modification(it` s original). The efficiency is 87%(calculated-input 550w,output 483w)
And this is the final stage in chassis.
**broken link removed**
**broken link removed**
If somebody want to talk about this, he can post here. This is a summary because is a lot to write about this modification. You put the questions, I will try to ask. sorry if a breake the rules or for a wrong post or my english
I have modificated about 60% component on this atx, I will not prezent this but I show you my final project(You can contact me on pm for details). I make conversion on the final stage with fast conversion brigde maked from 3x FIC1620(16A, 200v fast diode-double) for +-.
I use the auxiliary power suply from this atx source for alimentation of tl494 and ventilators.
The maximum power collected was 18A at 32v for 100 seconds(16v at branch), anyway on this stage all componens was verry hot.
**broken link removed**
free picture hosting
Next step I was collected 10A at 46v(23v on each branch) for 40 minutes. The power source is capable to deliver this power only if she have a good ventilation like a tunel or like a computer cpu.
**broken link removed**
photo hosting
On this next stage i was collected continous 6A for 1h and 30 minutes at 48v (24v for each branch), on this stage the is capable to deliver suficient power for 5x tda7294. The heatsink was 45 degrees Celsius with fans at 5v.
**broken link removed**
upload photo
Another images on work.
**broken link removed**
**broken link removed**
**broken link removed**
**broken link removed**
**broken link removed**
**broken link removed**
**broken link removed**
**broken link removed**
**broken link removed**
**broken link removed**
**broken link removed**
The power tranzistors are MJE13009 in TO-247 for a good disipation. I use in primary 2x 680uF and the bridge is 10A/1000v. The core is EI-33 with not modification(it` s original). The efficiency is 87%(calculated-input 550w,output 483w)
And this is the final stage in chassis.
**broken link removed**
**broken link removed**
If somebody want to talk about this, he can post here. This is a summary because is a lot to write about this modification. You put the questions, I will try to ask. sorry if a breake the rules or for a wrong post or my english
