1000W Simple PA Amplifier

[sajti]

P { margin-bottom: 0.21cm; } Hi Mile, can I run this topology with this step driver, 120-60-0-60-120 VDC, and the proper
– 15VDC + 15VDC power suply, to drive 4 R load. Should I change something ?



Pozdrav.

It's possible, the only limiting issue is the maximum voltage of 2sc4793/1837, which limit the maximum HV to +/-115V maximum.

Sajti

 

[kandimba]

It's possible, the only limiting issue is the maximum voltage of 2sc4793/1837, which limit the maximum HV to +/-115V maximum.

Sajti

Thanks Sajti ! What should I do ? Replace them with MJE15032/15033. What do you think ?

 

[khalsa]

2sa1837 and 2sc4793

 

[sajti]

Thanks Sajti ! What should I do ? Replace them with MJE15032/15033. What do you think ?

Try MJE340/350, that would be better I guess.

Sajti

 

[Bhushan]

Hello,

I need the Transformer winding data, the requirements are 2x75vac 10 amps, I want to use this Transformer to power APEX BA 1200 Amplifier which i am using as sub-woofer driver.....

Here i am little bit confused about the transformer ampere will 10 amp is sufficient for for driving such a power full amplifier...

thanx..

 

[Bhushan]

sir can you share the winding data of this transformer , i am building the ampx ba 1200

 

[AndrewT]

2x75Vac @ 10Aac gives 1500VA transformer.

A 1500VA transformer is good for 750W to 1500W power Amplifier.

1000W PA may be OK, but you will need to gather evidence on transformer temperature during your typical operation to see if it is suited to your PA duty.

 

[yehan]

Can i used for this circuit a separate 2 transformer mo merge the two?

 

[AndrewT]

No, your transformer shows three connections to Power Ground. These will short some of the windings during different phases of the mains waveform.

 

[yehan]

How about this? This is ok to make high current?

 

[wg_ski]

No, your transformer shows three connections to Power Ground. These will short some of the windings during different phases of the mains waveform.

Actually, it was correct. It is simply two independent center tapped power supplies hooked in series. The negative of one and positive of the other connect and become power ground. The individual supply center taps are NOT connected to ground.

Half of the snubbers are missing, which is what makes it look funny.

 

[AndrewT]

Actually, it was correct. .............The individual supply center taps are NOT connected to ground..................

Have another look.
I can count !
There are three connections to ground, how can you possibly only see one?

 

[sajti]

Have another look.
I can count !
There are three connections to ground, how can you possibly only see one?

It is just a weird drawing, but not wrong.

Sajti

 

[yehan]

This is it...

 

[kandimba]

Try MJE340/350, that would be better I guess.

Sajti

Thanks once again sajti

regards

 

[sajti]

Thanks once again sajti

regards

I hope Your amp will work soon!

Sajti

 

[3388ton]

🙂

This is it...

 

[jaagut]

sir can you share the winding data of this transformer , i am building the ampx ba 1200

Trafo Specs: 1500VA, 75V-0-75V, 10A

E-I Core Size: 2" x 3.5"
Turns per Volt 1.14
Primary Wire Size: AWG14
Secondary Wire Size: AWG13

Just convert the wire size based on India's Standard.

 

[Bhushan]

8x MJL21193, all 526-527mV
8x MJL21194, all 520-522mV[/QUOTE]

Can i use MJL21193 & MJL21194 instead of mjl4281 and mjl4302a in Apex Ba 1200

Thanx

 

[thimios]

This is it...

Can you post this in pdf?