900W H-class PA Amp with Limiter

[waylene]

OK I will send all side of amp! Again thanks for all of you for helping me!

 

[gantex]

OK I will send all side of amp! Again thanks for all of you for helping me!

ur are welcome sir,. I jusr try helping any diyers here and i hope my help is work.

 

[waylene]

H900 v.2

As you ask Sir!

Left side of H900

 

[waylene]

H900 v.2

As you ask.


Right side.

 

[waylene]

H900 v.2

As you ask.

Middle side.

 

[waylene]

H900 v.2

Right top side.

 

[waylene]

H900 v.2

Sorry friend, this is the right side of H900. Top side.

 

[waylene]

H900 v.2

Middle side of h900

 

[waylene]

That is all I got, I post power supply now.

 

[waylene]

H900 v.2

Here is power supply I use for H900, One toroid with +110 +45 0V -110 -45 .

 

[waylene]

Love building power amps.

As you can see here, I love to build power amps, but I struggle a lot to get signal out of it. I like to try for what I love.

 

[ravpreet420]

hi use 0.33r 5w resistor not 33r 5 w
plz check again

 

[waylene]

OK! I will chain's that, I know that 0.33r / 5w is smaller than 33r/ 5w. This is only a prototype for me.

 

[thimios]

0.33R

OK! I will chain's that, I know that 0.33r / 5w is smaller than 33r/ 5w. This is only a prototype for me.

Pay attention.
resistors in photo(post#2791) are R33 NOT 33Ω
Resistors in photo are 0.33Ω
R33 and 0.33Ω it's the same thing just different marking.

 

[gantex]

Hey weylene, i show ur bottom side of ur H900 and i think pad is too closer, please check with ur multi tester u have and select to ohm meter, and check any pad or cooper track its not short.

Regard.

 

[waylene]

@ Gantex, I already do it and nothing of my tracks does not short, I test it now for the 4th time to make sure of it.

 

[waylene]

H900 v.2

The only problem so far I got is that the one side of that amp, don't start up, like I show you here in my pic. The side of the 1943 transistors is very cold and never warm up like 5200 only warm up. But amp still play.

 

[apexaudio]

The only problem so far I got is that the one side of that amp, don't start up, like I show you here in my pic. The side of the 1943 transistors is very cold and never warm up like 5200 only warm up. But amp still play.

BF421 have different pins than MPSA92

 

[gantex]

@ Gantex, I already do it and nothing of my tracks does not short, I test it now for the 4th time to make sure of it.

ok @waylene i see, then are u check final tr too?
When tr c5200 warm up how much voltage this?

 

[andrewlebon]

Waylene doesnt listen to ADVICE given