Daftman's 1 AA LED Light----My replication

This is a replication of the "Daftman's" one AA battery LED light circuit. It was posted at the "Teep" forum and shows another way besides the 'Joule Thief ' circuit to boost voltage high enough to light a 3 volt LED off of a 1.5 volt battery. I modified the circuit by adding a charging point just past the LED where a second battery can be placed. This circuit uses a small part (looks like a resistor) called an "inductor" instead of the toroid coil used in the Joule Thief circuit. In this video I also show a small transformer added to a standard Joule Thief circuit that drives a small flourescent tube. The tiny transformer is placed between the LED and the charge battery in the circuit.

Category:

Science & Technology

Tags:

• Joule Thief
• Energy
• Lighting

[mmsglobe]

Very good Lidmotor ! As usual ... The first circuit, are they both Supercaps (source and charge)?

[Lidmotor]

mmsglobe----The first cap (source) is a Supercap-- 2.3volt 10 farad that I got from Mouserdotcom about $5. The second cap is just a radioshack 50volt 2200 uf about $1.50. Mouser sells a 2.3volt 50 farad supercap for abot $8. I have a coulple of those that work great for this kind of low power project.

[GBluer]

Very Nice.

It looks like the charge side charges very fast.

[Lidmotor]

GBluer----- Yes it seems to work well. I put a 25 ohm rheostat at the source to control the voltage and slow the amp draw down. It was drawing 50 Ma.

[Pirate88179]

Great job! I am really loving your "transformer" coil on my Bedini. Thank you for that. It works very well. Keep up your great work here.

Bill

[Lidmotor]

Thanks Bill, Glad that it is working.

[OverUnity7734]

Thanks for sharing.

I like the idea of swapping the batteries to keep the circuit going.

To make it automated I am going to try a zero volt diode to sense the battery is full and maybe a 74V2T66STR to do the battery swapping.

It will eventually stop due to heat losses though should run longer than if it just used the one battery.

[Montresor14]

Hi, sorry, the L1 inductor is 18uH? Thanks for sharing this!

[rroge5]

can you please make a taser with a spark gap , out of a joule theif.. it would be cool!.

[XenomorphLabs]

You always combine different approaches, that is very creative! Keep it up ;) Always exciting to watch your vids.