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This is a Cadillac Joule Thief with six features.
  • Fits comfortably into a pocket.
  • It is built of SMT components on a IC socket platform.
  • It can drive different color and size LEDs.
  • It does Suck a Battery almost completely Dry
  • It will be used to test different brands of AA battery capacity.
  • Yes, it can be used as a Continuity Tester

Sorry, but this project requires advanced soldering skill to build !

Step 1: Assembled Thief

Picture of Assembled Thief
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Bright Pocket Flash Light
  1. Easy to hold
  2. Pointing toward the iCamera
  3. Aim a narrow beam 10' across the room to see the LCD weather station
  4. Close up of LCD station illuminated by a single LED from 10' across the room
  5. LED lightning a tall Victorian ceiling
  6. Detailed component descriptors


 
beehard443 years ago
i somehow got the idea of making my own joule thief IC...
I like how you made the main part of the circuit detachable
iceng (author)  beehard443 years ago
Thanks :-)
Its for a future light project that I want to make using it....

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irlolcopter3 years ago
"They feature a built-in synchronous rectifier, which improves efficiency and reduces size and cost by eliminating the need for an external Schottky diode."
Is a quote from the MAX1675 website.
is it possible you could have a go at tweaking this circuit to see if it could be further simplified?
just wondering
iceng (author)  irlolcopter3 years ago
Thanks for reading the details.
Yes.... it works without the extra diode however
They also say the Schottky diode helps the unit to start at a lower voltage.

Isn't that the point when sucking energy out of a battery ?

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could you use it to transfer electicty
iceng (author)  extremeseeker3 years ago
It IS transferring electricity from the battery to the LED
bajablue3 years ago
Voted! ;-)
iceng (author)  bajablue3 years ago
You are very Kind.

I'm approaching a just few bits away from where you
created a healthy serving for my centennial soriee :-D
TheHawkeye3 years ago
Great project. What if you could shrink it into a broach, necklace, or earrings?
iceng (author)  TheHawkeye3 years ago
Thanks for the compliment.
Some time ago some one made earrings that lit and twinkled.
Ingeniously the battery was a button cell on the inside of the clasp.

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could you use it to store electricity?
iceng (author)  extremeseeker3 years ago
Only for a few microseconds, it is not the kind of storage device you seek.
This thing works like an other jewel thief, it uses a magnetic coil or coils
to transform voltage and current to suit the LED in the circuit.

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