Monday, May 26, 2008

DIY Low cost Speaker for test new PowerAmp.

1. Open speaker


2. DIY Speaker from CD - Rom package.



Monday, May 19, 2008

All fail IC By Sukyone ......


Oh......


No more word see all pictures.

LM3886 ,TDA2030,TDA7560 ,NE5532 ,TL072 etc.....
failed by Me...

LM3875 Gainclone Chipamp New DIY Project

Starting new LM3875 Gainclone chip amp Project.


LM3875 PCB Purchase from Thai Diyer.
http://www.htg2.net/index.php?topic=11458.0

Installed part R,C

bottom view.
Install LM3875 Chip.


Two PCB dual Mono for stereo power amp.
Top view.

Part list per 1 board.
1.LM3875T 1
2.MUR860 8
3. R 22 K 1/4 w 1% 2
4.R 1K 1/4 w 1% 2
5.R4.7 K 1/4 W 5% 2
6. C 1000 uF 50 V 2
7 . C 220 uF 50 V 2
8.C 100 nF 63 V ( MKP ,MKS) 3
9.LED 2
10.R 2.7 ohm 2 W.
11. Power transformer primary 220V ( or 110 V) secondary 20-0, 20-0 300VA