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Old 28th February 2012, 03:58 PM   #1
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Default HAL OPB amplifier

Heres one of the toys in the lab
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Old 28th February 2012, 07:35 PM   #2
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some curves
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Old 28th February 2012, 10:49 PM   #3
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more
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Old 28th February 2012, 10:58 PM   #4
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Default PCB Volunteers needed

I hope now theres a toy for everyone
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Old 29th February 2012, 02:28 PM   #5
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Default 30k builders needed

This is another product of the formula . Data is required. Once you build the amplifier, simply post your findings in this thread. The formula indicates you will like it. Did you ? If you are looking for adventure and love to work with amps you are encouraged to join this thread, contribute by building the amplifier and posting your pictures and comments. Contribute to the state of the art

kind regards,

Harrison.
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Old 5th March 2012, 07:35 AM   #6
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Default confused...

Hi Harrison,

I'm confused of this amp.Is this a complementary feedback amp.?what is its classification?

regards,
joel
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Old 5th March 2012, 02:49 PM   #7
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To simplify things, yes its a CFP, depending on how you look at it
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Old 28th March 2012, 06:40 PM   #8
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Default Version 2

Heres version 2

I am thinking, part of R5 and part of R18 should be NTC thermistors , any ideas ?
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Old 29th March 2012, 04:50 AM   #9
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Default brilliant idea.

instead of muonting diodes on heatsink thermistor would do the job.besides of easy installation same function as the vbe and diodes.yeah we used that also in copier to maintain 180 degrees temp..it change value when temp. increase also.

regards,
joel
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Old 29th March 2012, 01:57 PM   #10
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I have just found another thread dealing with that, hope PASS can tell us more

Thermistor use in power amp bias servo circuit?
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