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Class D Switching Power Amplifiers and Power D/A conversion

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Old 18th November 2012, 01:26 PM   #281
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2x Iron Powder Toroid Core T200-2, Iron Powder Toroid Core T157-6 items in urbasket eu store on eBay
this URBASKET EU STORE is a ripper please be careful in dealing with him ARTHUR
i hvae still not got my 10 t157-2 cores 3 MONTHS have passed
warm regards
andrew lebon
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Old 18th November 2012, 08:20 PM   #282
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T106-2

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Old 18th November 2012, 08:29 PM   #283
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original T106-2

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Old 18th November 2012, 08:49 PM   #284
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damnit so many cores! :O haha
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Old 19th November 2012, 03:27 AM   #285
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it is for all off DIY and iranian boys my friend
i can send it to all by DHL post
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Old 11th December 2012, 01:02 PM   #286
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Default Connect Trasducer to this circuit

Hi!

Nice simple class D amp!

I was wondering if this amp would work fine in the 38-42 kHz range and what to do to connect it to a high impedance piezoelectric transducer (custom transformer I suppose). I want to start playing with relative high power ultrasounds

Thanks so much for any tip!
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Old 1st January 2013, 11:23 AM   #287
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I've created a layout for this one.

I added trigger for protection circuit and added gate resistor diode.
Also adjusted some values for slightly higher than +-50V operation.
You can opt for the original values if you want it to run it for lower voltages.

I added the fuse so I can easily route the GND trace haha.
Attached Images
File Type: png 300wClassD.png (84.8 KB, 355 views)
Attached Files
File Type: pdf 300W-ClassD-Bottom(2.9 x 4.9).pdf (30.1 KB, 254 views)
File Type: pdf 300W-ClassD-All(Values).pdf (56.6 KB, 254 views)
File Type: pdf 300W--ClassD-All(Names).pdf (56.9 KB, 237 views)
File Type: pdf 300W-ClassD-Schem.pdf (22.2 KB, 404 views)
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Old 1st January 2013, 01:35 PM   #288
stewin is offline stewin  Kenya
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Quote:
Originally Posted by jlester87 View Post
I've created a layout for this one.

I added trigger for protection circuit and added gate resistor diode.
Also adjusted some values for slightly higher than +-50V operation.
You can opt for the original values if you want it to run it for lower voltages.

I added the fuse so I can easily route the GND trace haha.
have you tested it with +/-56vlts successful , do the outputs or gate drivers heat or operate normal at that voltage ?
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Old 1st January 2013, 02:00 PM   #289
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Haven't tested with that voltage yet. So to be on a safe side run it at +-50VDC first
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Old 25th March 2013, 03:56 PM   #290
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Here's my compact layout based on original schem by ejtagle.
Attached Images
File Type: png 200W Class D.PNG (155.5 KB, 289 views)
Attached Files
File Type: pdf 200W Class D - Bottom (2.3 x 3.5).pdf (27.2 KB, 193 views)
File Type: pdf 200W Class D-Values.pdf (38.7 KB, 219 views)
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