900W H-class PA Amp with Limiter

[ravpreet420]

still trying to fit outputs to heatsink

Hello andrewlebon

Anynews about chestap amp ?

 

[engel dela pena]

another step idea,like vertex

 

[mkubawat]

hi apex
I recently completed H900 with IR2117 ,then test it & powered with 50-0-50v(use only +/- MV for test) sound is OK but drivers MJE15032 ,15033 found very hot.
Please help me for this problem

Thanks

 

[mkubawat]

hi apex,

Please. send me also copy of vertex schematic & layout

Thanks

 

[andrewlebon]

vertx schematic

hi mkubawat
greetings schematic on page 61 h900 thread
warm regards
andrew lebon

 

[romulo_rosil]

hi mkubawat
greetings schematic on page 61 h900 thread
warm regards
andrew lebon

Where is the layout? Very strong amp.

 

[NMOS]

Hello,...

there was for longer time schematic from Apex for mute turn on delay with shorting inout to GND via Fets

cant find this schematic, can somebody post ?

 

[mkubawat]

Hello,...

there was for longer time schematic from Apex for mute turn on delay with shorting inout to GND via Fets

cant find this schematic, can somebody post ?

Which schematic............?

 

[NMOS]

Which schematic............?

it was small circuit shorting input to GND with Fets for Turn on mute

 

[alex mm]

schematic below .....
Alex.

 

[bunteeverma]

abe kya amplifire banata he tuhe banana nhi aata hi

 

[NMOS]

schematic below .....
Alex.

if you have circuit description too... this will be great to finished my project


thanks

 

[wintermute]

abe kya amplifire banata he tuhe banana nhi aata hi

bunteeverma this is an English speaking forum. If you post in a foreign language you must also post an English translation.

 

[sandeep kayarkar]

hi andrewlebon sekhar,aman,sudhir

what are you paying for c5200/1943 pair
iam getting 75 rs for a pair original toshiba

reards

ravs

be a vegeterian.....

hello sir, ravslanka
u made H900, n its working,
i also made H900, bt i have problem with IR2117,its not available in nagpur, so just try to go with B500, can u pls tell me what kind of changes i need to do?

 

[sandeep kayarkar]

ldr

 

[ravslanka]

hello sir, ravslanka
u made H900, n its working,
i also made H900, bt i have problem with IR2117,its not available in nagpur, so just try to go with B500, can u pls tell me what kind of changes i need to do?

hi sandeep

just remove the stepping circuit.rest of the circuit is the same except the the voltages you gonna use on b500 is 70-85 volts.remember to change r24/r25 according to your voltage or use external source for 5532.

regards

ravs


be a vegeterian.........

 

[sandeep kayarkar]

i dint get u, bt the good news is i have tested last night n its working, bt yes as u said abt r24/r25, there is 2.2k in H900 and 4.7k in B500, do i need to change them?n i m going to use2x24-0-24 5amp transformer in series then it will be 48-0-48 10 amp, is that ok for B500?

 

[mkubawat]

Dear Sandeep
if you need IR2117 please email me.

mkubawat@yahoo.com

 

[mkubawat]

i dint get u, bt the good news is i have tested last night n its working, bt yes as u said abt r24/r25, there is 2.2k in H900 and 4.7k in B500, do i need to change them?n i m going to use2x24-0-24 5amp transformer in series then it will be 48-0-48 10 amp, is that ok for B500?

no problem at all. 2.2k is ok but check for heat if 'burning heat' then replace with 2k2/5watt

 

[sandeep kayarkar]

sir andrewlebon, can u pls post pcb of this amp for me? thank u sir,