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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 15th October 2019, 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 15th October 2019, 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.
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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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Old 15th October 2019, 08:45 PM   #544
xrk971 is offline xrk971  United States
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200W IRS2092 Amp for
You can still get these amps. Just go to eBay and search “IRS2092 amp 200w”

For example:
IRS2092 Mono Digital Amplifier Board 200W with Class D Finished Amp Module | eBay

The PSU will take a bit more work. Least expensive is probably qnty 2 x 48v SMPS connected in series for dual rail. They need to have floating GND not connected earth ground.

Or use a 300VA 36v linear trafo and rectifier bridge and CRC like a traditional Class AB PSU.

Alternatively, there are DC to +/-48v SMPS that can run from a car 12v battery.
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Old Today, 03:04 PM   #545
hansueli is offline hansueli  Switzerland
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Hello


What do you think about this capacitor board?




The board will be assembled with Samyoung NXB capacitors. Two 2200uF with 12x 1000uF and 4x 680uF. This equals 9560uF per rail. On PSU and AMP are also some caps. This is only an additional board.




Will it be enought for 6 IRS2092 amplifiers?




Better than nothing^^
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