HELP----- I need a simple 50w AMP circuit ------
Hi every one.
I am going to build a small amp base on some spare part. Could any one give me a simple 50w class AB circuit? I am prefer Sweet, warmth sounds with good bass control .(Martin2599@hotmail.com)
------------ Thanks very much!!!!!!!!-----------
I have:
1 x 300w Transformer: 32V AC / +- 42VDC
2 x Power Transistors: 2SA1302 /2SC3281
2 x Driving Transistors: 2SA1306 / 2SC3098
2 x 2SC4137
2 x 2SC1845 / 2SA992
And some other small transistors and caps.
Hi every one.
I am going to build a small amp base on some spare part. Could any one give me a simple 50w class AB circuit? I am prefer Sweet, warmth sounds with good bass control .(Martin2599@hotmail.com)
------------ Thanks very much!!!!!!!!-----------
I have:
1 x 300w Transformer: 32V AC / +- 42VDC
2 x Power Transistors: 2SA1302 /2SC3281
2 x Driving Transistors: 2SA1306 / 2SC3098
2 x 2SC4137
2 x 2SC1845 / 2SA992
And some other small transistors and caps.
I can not answer your question exactly, however you may get some ideas from the links and information in the Reference DIY amplifiers thread:
http://www.diyaudio.com/forums/showthread.php?s=&threadid=93318&highlight=
http://www.diyaudio.com/forums/showthread.php?s=&threadid=93318&highlight=
Why not build the P3a from Elliott Sound Products Australia http://sound.westhost.com/project3a.htm
You will need some PNP driver transistors however.
There is even a PCB available
Tony
You will need some PNP driver transistors however.
There is even a PCB available
Tony
If you had 4pair of 2sa1302/c3281 or their replacement 2sa1943/c5200 you could get 100W+100W into 4ohms from that transformer.MTO audio said:I have:
1 x 300w Transformer: 32V AC / +- 42VDC
2 x Power Transistors: 2SA1302 /2SC3281
2 x Driving Transistors: 2SA1306 / 2SC3098
2 x 2SC4137
2 x 2SC1845 / 2SA992
And some other small transistors and caps.
It would be a bit of a waste to only take 50W into 8ohm from it. That's the most I would recommend from 1pair of genuine 2sa1302/C3281.
I think you are more likely to get +-46Vdc from the 32Vac windings when fed with nominal input voltage.
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