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Old 9th July 2010, 05:13 PM   #31
Mitchel is offline Mitchel  Brazil
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What's the web address for paijs website?
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Old 9th July 2010, 05:18 PM   #32
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Old 9th July 2010, 06:54 PM   #33
Mitchel is offline Mitchel  Brazil
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Thank you Andrew!
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Old 11th January 2011, 11:18 AM   #34
Mamak is offline Mamak  Malaysia
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Originally Posted by destroyer X View Post
seems fine..but maybe some resistance adjustment may be needed, better transistor selection, or to test ours.... timing adjustment and so on.

Seems fine...but who knows?... sometimes we find mistakes...human mistakes or layout mistakes..parts inverted and so on.

I will assemble and will be happy to let you all know.



do you test this protection?its work or not?
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Old 17th June 2011, 03:07 AM   #35
1965GTO is offline 1965GTO  United States
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If you look at the circuit as it is printed in the " Tab Electronics Guide To Understanding Electricity and Electronics", the Zener Diode is not schematically in the right direction. Look at the circuit as it is in "High Power Audio Amplifier Construction Manual" or "The Audiophiles Project Sourcebook". There the Zener Diode is in the right direction. You also need to do the math on the Rs and Iz depending on your voltage source if you are taking directly from the main power supply. All this to say that you need to flip your Zener the right direction and the protection circuit will work fine.
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Old 2nd June 2014, 06:01 PM   #36
SYAHRUL is offline SYAHRUL  Indonesia
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speaker delay
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