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Class D Switching Power Amplifiers and Power D/A conversion

200W IRS2092 Amp for
200W IRS2092 Amp for
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Old 13th October 2019, 11:16 AM   #541
troystg is offline troystg  United States
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Quote:
Originally Posted by ubergeeknz View Post
Depending how much the chip draws on the -5v rail, you might get away with a zener divider, or a resistor in series with a 7905 to reduce the voltage it sees


Or maybe he can start a thread about his amp???
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Old Today, 03:17 AM   #542
Turbowatch2 is offline Turbowatch2  Germany
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Even two simple 1N4004 diodes will get you under 35 volt.
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Old Today, 04:48 AM   #543
ThermalAlchemy is offline ThermalAlchemy  United States
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I have been watching this thread with interest but found out the original boards are no longer available and that nice power supply that was at a good deal is also no longer available.
So I have been looking for other boards based on the IRS2092. Only for the purpose of 12 inch sub drivers. I’m not even knowledgeable enough to know if this is even the right chipset to be using for this purpose if somebody would enlighten me.
Google Shopping – Product not found

Sure Electronics Wondom 1 x 3000Watt Class D Audio Amplifier Board -IRS2092 Mono Channel Amp

With the above amplifiers be a good match to be dedicated sub drivers mono block ?.

My other option would be use my old car 600 W alpine V 12 car amplifier. Which is 600 W mono or 300 W to channel. I would just have to build a power supply strong enough to drive it possibly with a battery buffer.

I could even crack open the case of the car power amplifier and bypass the 12 V input because I’m pretty sure they step it up internally through a transformer to either 40+ volts 60+ volts I could even crack open the case of the car power amplifier and bypass the 12 V input because I’m pretty sure they step it up internally through a transformer to either 40+ volts 60+ volts or 80 V each rail. And just build my power supply based on that higher voltage and run it directly to feed the rails. I know enough to be dangerous just cause a little smoke.
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