Wep v9.03: Audio Splitter for laptops
Its yet another tech weekend for me and Kaushani. This time we have come up with a hobby circuit called the “Audio splitter” specially meant for laptops as we’ve taken the power supply from USB. Its implemented using TDA2822M Dual OPAMP IC with internal feedback which gives a gain of 89 (39db).
It has separate volume knobs for each headphone(o/p) as you can see in the photo below,works on a 10mA current.Its based on a prototype designed by Vasuki Prasad,an ex MIT,Manipal student.
Main features:
1. Power supply from USB (5 Volts)
2. 39db gain and low noise (A bit of hiss sound when fully amplified)
3.Separate volume knobs to control volume of your choice on each o/p.
4.Low cost (complete prototype @Rs 190)
N.B:
(i) Wep stands for Weekend Project
(ii) Version format :Year.Month
[...] Splitter for Laptops: Merin shows a hobby circuit called Audio Splitter meant for laptops which takes power supply from laptops. Do check out the awesome [...]
Manish’s Scribble Board » Blog Archive » Interesting Blog Posts from all over Manipal
March 22, 2009
i think u shud just try and market ur product a bit…
really coz i m interested. al couples seeing movies in GSH wud be!
Shiv
March 25, 2009
thank you people for the comments.I’m looking forward to more feedback.
merinux
March 26, 2009
hey, we r not yet ex-MIT students! …pls dont make us feel so old. =)
s u rj o deb
March 28, 2009
@ s u rj o deb: Sorry i didn’t know that. I just heard from someone that he is an ex MITian. Thank you for correcting.
merinux
March 30, 2009
Cool work Merin….I hope you continue with these techie works….
Shubhendra
April 1, 2009
I like your projects. Especially because you too use USB for most of your projects just like me! And thanks for putting a link to my blog in yours.
I too shall put your link in mine!
regards,
Seemanta
Seemanta Dutta
May 5, 2009
@Seemanta:Thanx for commenting n i learnt a lot from your video tutorials. Thanks for posting.Looking forward to some good stuffs again!
merinux
July 26, 2009