900W H-class PA Amp with Limiter

[waylene]

My H900

 

[waylene]

H900 v.2

I got a problem with my h900. Only 2500 heat up when power up, but 1943 stay cold. Do you think what it can be?

 

[Vostro]

Did you remember to solder that thick wire on solder side of pcb

 

[sandman15th]

I got a problem with my h900. Only 2500 heat up when power up, but 1943 stay cold. Do you think what it can be?

u used only highvoltage? where is you mv? And dont forget the jumper ..

 

[wiljj78]

I got a problem with my h900. Only 2500 heat up when power up, but 1943 stay cold. Do you think what it can be?

Hi Waylene,

Can you post high resolution pic. try to double check your transistor pin by actual test using your multimeter or maybe it could be reverse/faulty diode or capacitor installed, i'm sure the faults is just waiting for you somewhere.
Also try to swap over your IR2117 it could be one of there is dead.
Regards,

 

[waylene]

OK! I will try to do that and let you guys know about it, Thanks for all your help, I appreciate much highly.

 

[LIEM POO]

Not yet tested .. out of time during vacation. Hope I can test it next time.

Verry Nice, Good Luck for you

 

[iiee3602]

Hi apex,

Can i use 2 toroidal transformer with 44-0-44 vac in H900

 

[boss2009]

Verry Nice, Good Luck for you

Many thanks Liem Poo 🙂

Regards

 

[sandman15th]

thanks apex,finally i finish my h900,i used i trafo for each channel,heres the picture with a old cpu casing




😀

hi,guys how much wattage that i can get on 1 channel have a supply of 80-50-0ac 15amps and channel 2 is 80-40 -0 ac15amps..thanks

 

[Rns audio box]

sandman15th wow looking good.....

 

[sandman15th]

sandman15th wow looking good.....

Thanks 🙂 i will share video when i got finish my tone control..

 

[rudygulay]

I got also ir2117 40 peso each here in ph but bav21,&sfa1630 no where cant find here

Sent from my GT-S7562 using Tapatalk

where you get IR2117? bav21 can be replace (if not mistaken) with fast switching diodes that can be found in any stores in Raon. but i have no idea where to get IR2117. maybe you can help. tia
🙄

 

[wiljj78]

where you get IR2117? bav21 can be replace (if not mistaken) with fast switching diodes that can be found in any stores in Raon. but i have no idea where to get IR2117. maybe you can help. tia
🙄

You can get this IR2117 & bav21 in RS Phil. and Element 14 as per below link.

RS

RS Philippines | World Leading Distributor of Electronics, Electromechanical and Industrial Components

Buy Rectifier & Schottky Diodes BAV21,113, Rectifier Diode, Switching 0.25A 250V, 2-Pin, ALF NXP BAV21,113 online from RS for next day delivery.

Buy MOSFET Power Drivers IR2117PBF, MOSFET Power Driver 0.5A, Non-Inverting, 10 to 20V, 8-Pin PDIP International Rectifier IR2117PBF online from RS for next day delivery.

Element14

element14 Philippines | Formerly Farnell | Electronic Components Distributor

BAV21 - NXP - DIODE, SMALL SIGNAL, DO-35 | element14 Philippines

MOSFET Drivers | element14 Philippines | Results

 

[rudygulay]

🙂 i've tried RS before but on different components, many thanks you make me wake. i'm feeling great now.

 

[lawbadman]

Can someone point me to the complete schematic of this amplifier?


Thanks

 

[DC sound]

Hi Apex..

can I use IRF640 instead of IRF540?

 

[MUHAND]

PLEASE IN NEED THE CORRECT PCB FOR ( APEX auto-range amp vu )

BEAST REGARD

 

[Josephr]

helloe apexaudio, can u also share to me the schematic and pcb design for H class amplifier, thanks.
because my power amp get burned

 

[stewin]

thanks apex,finally i finish my h900,i used i trafo for each channel,heres the picture with a old cpu casing




😀

hi,guys how much wattage that i can get on 1 channel have a supply of 80-50-0ac 15amps and channel 2 is 80-40 -0 ac15amps..thanks

hi sand man cool nice monting