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Build security camera system with your old smartphone
there are many kind of security camera system in everywhere. you can use but it docent matter i will tell you how can use your existing ANDROID smartphone as a security camera. no need extra money.its easy and its total free of charge.
Create your 400w stereo amplifier today
This is another great power amplifier witch designed by using 2SC5200 and 2SA1943. You can get super heavy quality power
in this power amplifier and it delivers 200W Rms through a 4Ω
speaker by one channel.
In this amplifier i have used 36V 8A transformer for the Power supply along with 10000MF 63V smoothing
