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Class D Switching Power Amplifiers and Power D/A conversion

Class D use with salvage parts
Class D use with salvage parts
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Old 1st July 2018, 02:50 PM   #1
phenix332 is offline phenix332
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Join Date: Apr 2018
Default Class D use with salvage parts

Hello everyone,
I bought a sony f210 for 35 euro and sadly it makes a cracking noise regardles wich input and output is selected or if the source direct activated.
You can download the manual with schematics here:SONY TA-F110,F210 Service Manual download, schematics, eeprom, repair info for electronics experts

Now i bought a Sure electronics IRS2092 amp board plus a matching power supply with +/-70 v as well as +/-15 v and it came to my mind that i could use the input/tape/function board and maybe even the SP SW board of the sony to get at least some use out of it.
2x 250W Class D Audio Verstarker Board amplifier IC IRS2092 Sure AA-AB32291 | eBay

2018 500W +/-70V High-power PSU Audio Amp Switching Power Supply Board Amplifier 648738894272 | eBay

What du you think, is this possible?
Happy the hear from you,
Phenix

Last edited by phenix332; 1st July 2018 at 03:06 PM.
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Old 1st July 2018, 03:50 PM   #2
JonSnell Electronic is offline JonSnell Electronic  United Kingdom
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Location: The Jurassic Coast, England. GB
I think I would have purchased a pair of upc1298v ICs for 12 instead, to get the Sony working again.
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Old 1st July 2018, 05:16 PM   #3
FauxFrench is offline FauxFrench  France
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Location: The mountains, calm and quiet.
The manual of the Sony TA-F110 dates back to 1989. Thus, 30 years.
The IRS2092 datasheet is dated 2007. You seem to have purchased a powerful IRS2092 implementation. Conclusion: the quality of active circuits in the Sony are unlikely to be up to the standards of the Sure amplifier. Why put such limits on a better power amplifier?

If you are into DIY including bread-bording, you may make a small pre-amplifier with input selector eventually using some parts from the Sony. As active components I will suggest you OP-AMPs like OPA2134 or LM4562.
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