900W H-class PA Amp with Limiter

[jon2xflash]

replacement for ir2117

sir apex what can i use to replace the ir2117 for the step driver of your h900..i have build 3 of your b500 and i am planning to build an h900. thank and more power.

 

[mkubawat]

APEX TEF PCB

Dear Sameer
any update of APEX TEF PCB, i think result will be good.

 

[black]

class h amp 1300w/4 ohms Class H amp LECO steep view - YouTube

 

[black]

P1070560 - YouTube

 

[iiee3602]

irf540

can i replace ir546 with ir640

 

[apexaudio]

can i replace ir546 with ir640

No

 

[black]

Who knows if this scheme goes step-up

 

[eesbiboi]

thanks for the comment mkubawat.

thank you dear...
you remember me...

regards
ees...

 

[apexaudio]

sir apex what can i use to replace the ir2117 for the step driver of your h900..i have build 3 of your b500 and i am planning to build an h900. thank and more power.

There is no replacement for the IR2117, use circuit with TL072 step driver.
Regards

 

[remle114]

H900

my H900 with -/+47MV -/+94HV

 

[drowranger]

very nice....

Hi Remle,

Did you make your own board?I cannot find ir2117 from your board...

regards,
drowranger

 

[remle114]

Hi Remle,

Did you make your own board?I cannot find ir2117 from your board...

regards,
drowranger

yes i make my own board.
also i cannot find IR2117 thats why i build this version with transistor driver

regards
Elmer

 

[drowranger]

very innovative...

Im sure Mr. Apex will be very proud of this....very neat. mabuhay ka kabayan(more power)

regards,
joel

 

[black]

remle pliz post sshematic for step-up

 

[apexaudio]

my H900 with -/+47MV -/+94HV

Nice work, 80VAC on output is 1600W on 4R load. I suggest limit on 60VAC it's 900W on 4R or 65VAC for more than 1050W on 4R. Speaker impedance can drop for different frequency, and power increase more than 50%, with only 4 pair of outputs it's risk.
Regards

 

[jon2xflash]

yes i make my own board.
also i cannot find IR2117 thats why i build this version with transistor driver

regards
Elmer

sir can you post your schematic version of you h900 using a trnsistor driver for the supply..
regards.

 

[remle114]

sir can you post your schematic version of you h900 using a trnsistor driver for the supply..
regards.

schematic on page 135 post 1346

 

[irvynejay]

h900 step irf nad transistor

this was made and edited by QQ12e5k1 and this should not be forgotten
\\\\\credits goes to apex and QQ12e5k1

 

[remle114]

yes QQ12e5k1 made this and i build this to prove and share that this is a working circuit,
because nobody wants to try or share their experience with this schematic.

 

[irvynejay]

my H900 with -/+47MV -/+94HV

80vrms how much load did you use? is it loaded or no load ??