HOW TO MAKE a JOULE THEIF (CAPACITOR CHARGER)

Intro: HOW TO MAKE a JOULE THEIF (CAPACITOR CHARGER)

hi in this instructable i will show you how to make a joule theif.this joule theif can be used to charge capacitors.
I charged a 30v 3300uF cap in 5 minutes.

Step 1: PARTS

PARTS

R1-1K
Q1-D882 or any npn transistor
D1-1n4007 or any diode above 5v
toroid-you will get one from an old cfl
C1-3300uF or any other cap to be charged


Step 2: WIND THE TOROID

wind both wires togather and connect the resistor to the begining of one wire and the ending of the other wire.

Step 3: MAKE THE CIRCUIT

Step 4: FINISHED

TEST IT OUT MINE BURNT AN INFRARED LED.it has a capacitor discharge so led will be illuminated for some time.

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    11 Discussions

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    Ratty Bunyip

    1 year ago

    Obviously yours is surviving but depending on drive transistor some implementers might consider a protection zener across the output to snub the peak voltage across Vce and protect the transistor?

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    electro techsterdudes

    Reply 1 year ago

    It depends on number of turns on the collector emitter coil,higher the turns there higher the voltage.I got about 40 volts

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    DarkModo09

    2 years ago

    Can it be used to charge the capacitor enough for a coilgun?

    2 replies
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    electro techsterDarkModo09

    Reply 1 year ago

    You can try a joule ringer.It can produce high voltages with
    descent current output

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    electro techster

    1 year ago

    This is my account i firgit the username and password so im not able to answer ur questions

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    What's the current path once you remove the battery?

    Are you sure you don't have the led in parallel with the capacitor?

    I have a capacitor charging while running this thing so if there is no diode the current can flow back

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    rasha yellow

    5 years ago

    Very Neat. I have a lot of googling to do now

    Hi, that is good :D. but couse you load is a LED, i think you dont need the diode in output? dont you think?