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Old 18th August 2011, 02:00 PM   #1
radio is offline radio  Macedonia
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Question PCB for QUASI Amplifier for Beginners with changes!?

Hi all!!
I ask all the good people on this forum to help to develop a PCB for this changed amplifier "QUASE Amplifier for Beginners"!?
I do not know I do because I need the help of PCB.
Mr. Alex mm PCB excellent feature because it can and if there is time some help!
thanks and cheers !
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File Type: pdf Figure 1 (550W).pdf (66.7 KB, 195 views)
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Old 18th August 2011, 02:14 PM   #2
AndrewT is offline AndrewT  Scotland
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550W is not a suitable beginners' project.
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Old 18th August 2011, 06:59 PM   #3
radio is offline radio  Macedonia
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Quote:
Originally Posted by AndrewT View Post
550W is not a suitable beginners' project.
I am not so young novice?
Here's a PCB for this amp, but it is not much I like it because there is not transistor for bias (see Figure 1 and PCB) !?
cheers
Attached Files
File Type: pdf Apex550 with protection mirror-1.pdf (27.2 KB, 142 views)
File Type: pdf Apex550 with protection mirror.pdf (27.2 KB, 107 views)
File Type: pdf Apex550 with protection-1.pdf (57.6 KB, 119 views)

Last edited by radio; 18th August 2011 at 07:20 PM.
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Old 18th August 2011, 08:43 PM   #4
NMOS is offline NMOS  Germany
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I prefer "Quasi" NBIP or ACTRK NMOS can deliver 1000W RMS with 12 pcs IRFP460


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Old 18th August 2011, 08:59 PM   #5
sreten is offline sreten  United Kingdom
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Quote:
Originally Posted by AndrewT View Post
550W is not a suitable beginners' project.
Hi, +1 for the above. And it doesn't have a Baxandall diode, why not ? , rgds, sreten.

Without that its churlish to start worrying about bias issues, it will always be terrible.
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Last edited by sreten; 18th August 2011 at 09:03 PM.
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