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Old 25th June 2010, 09:02 PM   #91
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With all this informations "Begginers will become Experts"
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Old 26th June 2010, 11:11 AM   #92
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There always be begginers, and some people with expirience go back to this simple design 20 years after they build first one. This is clasic circuit as bridge rectifier, and always will be usefull,
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Old 26th June 2010, 02:58 PM   #93
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about follow website you will find more interesting approaches:
Audio Amplifier Design
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Old 27th June 2010, 01:18 PM   #94
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50-500W classB
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Old 27th June 2010, 06:25 PM   #95
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Quote:
Originally Posted by apexaudio View Post
There always be begginers, and some people with expirience go back to this simple design 20 years after they build first one. This is clasic circuit as bridge rectifier, and always will be usefull,
Regards
At my view beginners should not start with an high power audio amp circuit appropriate for supply voltages between 80V until 160V !!!
20-40 volts (+/-10 - +/-20 volts) are enough for starters and first projects. Because this means much lower output power, more amp devices and multi-amping modes resp. active crossover solutions are necessary.
The great advantage by carried out this solution is the possibility to go on in steps (at first small amp, after checking the reliability the clone of more such devices and as last step an active crossover network).


BTW - in the schematic from previous post I would introduce additional resistors in the collector lines of the BC546, so that the voltage from C to E arround 20-25 volts

Last edited by tiefbassuebertr; 27th June 2010 at 06:27 PM.
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Old 27th June 2010, 07:24 PM   #96
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For absolute begginers,
LM3886 Schematics + PCB
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Old 27th June 2010, 07:30 PM   #97
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Stereo with PSU
TDA7294 Stereo/Bridge with PSU
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Old 27th June 2010, 11:36 PM   #98
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Quote:
Originally Posted by tiefbassuebertr View Post
At my view beginners should not start with an high power audio amp circuit appropriate for supply voltages between 80V until 160V !!!
20-40 volts (+/-10 - +/-20 volts) are enough for starters and first projects. Because this means much lower output power, more amp devices and multi-amping modes resp. active crossover solutions are necessary.
The great advantage by carried out this solution is the possibility to go on in steps (at first small amp, after checking the reliability the clone of more such devices and as last step an active crossover network).


BTW - in the schematic from previous post I would introduce additional resistors in the collector lines of the BC546, so that the voltage from C to E arround 20-25 volts
Power is not that important, this is simple schematic with no adjust. Begginers may have problem with any amp no metter what power it is.
About resistors in the collector... This is oldest schematic version, I add cascode, current miror, VI limiter, bias adjust... but that is new amplifier,
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Old 1st July 2010, 01:32 AM   #99
joka22 is offline joka22  United Kingdom
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Hi guys i am willing to trade a one dhr turbo board industry standard for the two quasi board of any quality as long as it does the job.

or dx blam es boards two of them for two of quasi board. the dx blame es - one of the board is complete with parts and transis. i would like one of the quasi boards to atleast come with some parts resistors and caps not big issue but would like to have the little transistors the 2n773 dnt matter but welcome it if offered.,
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Old 1st July 2010, 05:14 PM   #100
mihailo is offline mihailo  Serbia
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Can you post some pictures?
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