Little BTL Amplifier - ZIPPO BTL

[MoonL]

My friend had built himself a new amplifier, and once I saw it I think I need to share this amazing amplifier to others.

The one on left hand side is a lighter amplifier my friend made before, the right one is this time 'lead'

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Follow are the building process of this ZIPPO BTL from my friend

1. Draw a 1:1 image of the amplifier and test the size

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2. Solder parts

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3. He used 1 3.7V Lithium-Ion battery, 3 opamp this time and use IE80 to test

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4. Key point of ZIPPO BTL, a ZIPPO Lighter. Open holes on it

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5. Finally, insert the amplifier into the ZIPPO Lighter

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FINISH

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Thank you for watching.

 

[Earfanatic]

Wooow, this looks fantastic!
Congratulation to your friend and thanks for sharing it.

 

[dirkwright]

That's hilarious! Thanks for sharing!

 

[BlueRob]

Interesting approach mate! The big question here is how good does it sound?

 

[Parasonic]

I never cease to be amazed

..........at the ingenuity and skill of the people on display here.
Just had to say good job.

Cheers
Terry

 

[ChicagoJTW]

What is the purpose of the third op amp?

 

[merlin2069er]

Wow, that's neat. I can't imagine how you can squeeze all that into a lighter.

 

[panjianto]

good job

 

[stridervvv]

interesting!

 

[swalter]

love it....

is the charging cct for the lipo integrated as well?

Stefan

 

[MoonL]

What is the purpose of the third op amp?

2 of the opamps are for BTL
1 of them is the buffer before VR

 

[MoonL]

Thank you for you all...
My friend is very happy that his DIY is like by you all~~

 

[nata1993]

This is GREAT ONE! I would build it with other output jack, more like 3,5mm one and i have one question, do you have a cirquit for this amp? I would really like to build for myself this one. Thanks for posting this masterpiece!

 

[sashaw]

That's amazing that can be fitted inside a zippo. Could you share photo of the other side of PCB?