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Author Topic: Simple Joule Thief 2-4V to 110-140V 250-350W 2-3 Amps  (Read 3107 times)

Offline geovat

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  • Posts: 18
Simple Joule Thief 2-4V to 110-140V 250-350W 2-3 Amps
« on: May 23, 2022, 02:06:21 PM »
Simple Joule Thief using:
- a chinese step-up booster
- 3x850V capacitors tested with multiple values and all works connected in parallel
- a flashlight tube starter (starter formed by a gas lamp and a capacitor)
- a 2.5v or 4v battery to start the booster
Very much attention because the circuit has parts under HV !!

https://www.youtube.com/watch?v=mNdPOJqM8DI

https://www.youtube.com/watch?v=BV-87dlNvPQ

https://www.youtube.com/watch?v=QIG_g4PT5aM

the device is a prototype I didn't test this for endurance
i put a light bulb there optional for my safety in case of circuit overload
the circuit is made only for test / demo, the cable connectors are not for HV

« Last Edit: May 24, 2022, 01:07:18 AM by geovat »

Offline sergeyman

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  • Posts: 6
Re: Simple Joule Thief 2-4V to 110-140V 250-350W 2-3 Amps
« Reply #1 on: May 23, 2022, 03:10:11 PM »
Thanks  ;)

Offline geovat

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  • Posts: 18
Re: Simple Joule Thief 2-4V to 110-140V 250-350W 2-3 Amps
« Reply #2 on: May 24, 2022, 01:06:27 AM »

Offline geovat

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  • Posts: 18
Re: Simple Joule Thief 2-4V to 110-140V 250-350W 2-3 Amps
« Reply #3 on: May 25, 2022, 02:03:46 AM »
I managed to get the voltage of 220 V and turn on a light bulb at 220 V. I got the voltage of 220 V in the area of the circuit protection light bulb which was used as protection against circuit overload. I also managed to start the circuit with 2 AA 1.5 V batteries of course at a lower power compared to 4 V. I repeat, the whole circuit is a voltage booster based on a cheap Chinese toy that is powered at low voltages but provides high voltage in circuit. Watch the video:

https://www.youtube.com/watch?v=ESTaRWu6haY


-

Offline pix

  • Sr. Member
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  • Posts: 386
Re: Simple Joule Thief 2-4V to 110-140V 250-350W 2-3 Amps
« Reply #4 on: May 25, 2022, 09:33:23 AM »
It is not a Joule Thief.
Converting few voltts to a few hundreds Volts at some microamps.
I can't see any "gain" in that circuit.


Cheers,
Pix

Offline geovat

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  • *
  • Posts: 18
Re: Simple Joule Thief 2-4V to 110-140V 250-350W 2-3 Amps
« Reply #5 on: May 25, 2022, 11:46:18 PM »
Today I reached 900 volts with 4 volts battery and successfully power up 2 x 220 volts light bulbs each at 11 Watts. The circuit can support more watts but I work on a stable solution including a transformer. The circuit can also recharge the battery and make a regenerative circuit.

Watch video:
https://www.youtube.com/watch?v=JKuz1CZwNDs

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Offline alan

  • Hero Member
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  • Posts: 622
Re: Simple Joule Thief 2-4V to 110-140V 250-350W 2-3 Amps
« Reply #6 on: September 03, 2022, 08:29:20 PM »
That's what boost converters do :) 
https://www.youtube.com/watch?v=qDeQK5y6rwY