I have been trying to get 2 china 500w amp boards to run in full bridge mode with a single supply of 160 volts.
Currently the grounds are connected between the 2 I will try floating each on its own as I can but I don't think that will fix the problem...any ideas? I'm thinking the ground is being modulated on the VAA VSS side causing a shutdown....this happen at fairly low volume.
Currently the grounds are connected between the 2 I will try floating each on its own as I can but I don't think that will fix the problem...any ideas? I'm thinking the ground is being modulated on the VAA VSS side causing a shutdown....this happen at fairly low volume.
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The configuration you describe is capable of >1.5kW on 8 ohm, even more on lower impedances. It exceeds the capabilities of the amplifiers by some margin if you try to use them at full volume
Can't get a few watts out before it cuts out, I have removed all the protection and it still does it...
Wow, after trying absolutely everything saw the cap to VAA on the shutdown line for de thumping and thought just maybe. Removed it and tada, it now works perfect. Although I lost the de thumping functionality of the IRS2092.
I have seen many posts about cutting out IRS2092 amps and now am sure this was most of the problem.
On these boards the chip is run from + and - 5 volts (VAA and VSS) regulated by 2 zenors. If the ground swings by more than 5 volts the chip will think it has received a shutdown signal and do such.
I have seen many posts about cutting out IRS2092 amps and now am sure this was most of the problem.
On these boards the chip is run from + and - 5 volts (VAA and VSS) regulated by 2 zenors. If the ground swings by more than 5 volts the chip will think it has received a shutdown signal and do such.
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