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Old 24th July 2012, 06:09 PM   #2131
exflaco is offline exflaco  Armenia
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Sir Apex Could share pcb for D500 ,tanks a lots or only a proyect,not tested?
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Old 25th July 2012, 05:27 AM   #2132
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hi guys i have a little problem with che900 amp ,i changed the tl071 with a opa134 and i have some DC offset when i power up and power down the amp makes a loud boom on spekers ,is there a way to reduce the dc offset ?
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Old 25th July 2012, 05:31 AM   #2133
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how much dc offset you have ,,pls check voltage on zener 5.6v -/+ if what dc you have then check for short on TL0 side i never get that problem on irs900 offset 1.2mv
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Old 25th July 2012, 05:57 AM   #2134
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ill mesure today the offset but i have OPA134 instead of TL071
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Old 25th July 2012, 06:38 AM   #2135
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pls look datasheet of those ic and compare thanx
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Old 25th July 2012, 07:29 PM   #2136
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Default irs2092 ok frend 6.8v:)

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Originally Posted by irvynejay View Post
pls look datasheet of those ic and compare thanx
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Old 25th July 2012, 08:30 PM   #2137
exflaco is offline exflaco  Armenia
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Default Poor man class D laboratory

And much time experimment
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Old 25th July 2012, 09:35 PM   #2138
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Default Irs2000d OCP resistor value

Hi everyone,

For those looking for OCP res value : for example 100 ohm

Some Maths:
Vref (LM311 pin 2) is 12*100/(6800+100) = 174mV
Iout(trip) = Vref/0.01=17,4 A

You can change ocp res value to suit your needs.
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Old 26th July 2012, 02:20 AM   #2139
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Hi,

Do you have OCP for IRS900? How to implement it?

Thanks
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Old 26th July 2012, 09:02 AM   #2140
t68kv is offline t68kv  Philippines
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IRS-900

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