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Old 16th January 2013, 05:35 AM   #1061
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Quote:
Originally Posted by mj777 View Post
Apex psu 10 - trial
Nice, if your making pcbs, I would be interested in some.
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Old 25th January 2013, 01:06 AM   #1062
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This is my SR200 with Soft Start, but i plan to move this soft start. It is located too close to Solen input capacitor, it affects some noises into right channel amplifier block.
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Old 25th January 2013, 05:57 AM   #1063
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I am having trouble finding BC560 transistor, can I replace it with another type, for example BC557? thanks
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Old 25th January 2013, 06:09 AM   #1064
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I'm not familiar with the circuit, but a bc557 is similar in a lot of specs to the bc560. However the bc560 is a low noise part.

you might try futurlec BC560 - BC560 PNP Low Noise Transistor It's a long time since I ordered off them but delivery time to Aus was about 2 weeks from memory.

Tony.
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Old 25th January 2013, 06:33 AM   #1065
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thanks for the info.
I mean, is there any equation of this type that might get my place?
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Old 25th January 2013, 07:26 AM   #1066
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Quote:
Originally Posted by Arif Budiyanto View Post
This is my SR200 with Soft Start, but i plan to move this soft start. It is located too close to Solen input capacitor, it affects some noises into right channel amplifier block.
Nice work
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Old 25th January 2013, 07:27 AM   #1067
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Quote:
Originally Posted by ahmadfay View Post
I am having trouble finding BC560 transistor, can I replace it with another type, for example BC557? thanks
BC557 can be use instead BC560.
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Old 26th January 2013, 02:07 AM   #1068
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Quote:
Originally Posted by apexaudio View Post
BC557 can be use instead BC560.
thanks for the response ...
regards
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Old 27th January 2013, 03:59 PM   #1069
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hello sir
what is the
THD,
frequency response,
damping factor of SR200
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Old 1st February 2013, 11:14 PM   #1070
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I have completed the SR 200 project, the result is quite satisfactory in terms of sound quality, but there is a little problem on the final transistor excessive heat, bias from base to base in the set at 1.9 volts. does anyone have a solution to this problem?
thanks
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