Earth Battery Joule Thief Lights 7 LEDs

This is my earth battery powering a joule thief circuit and running 7 ultra bright, 10mm, 28,500 MCD LEDs. I misspoke myself in the last video, these are 28,500 MCD not 28,000 like I stated. It is good to get corrected sometimes. I won't go through the circuit details here, you can check my earlier ones for this info. The only real difference is that I added a second 2.3 volt 10 Farad super capacitor to the circuit. I only did this because I had one. I can't say if this helped or didn't but, you can see the lights illuminated so, I guess it works. For more info, go to Overunitydotcom in the joule thief topic. By the way, my lab assistant (Spot) is 15.5 years old. Thank you.

Bill

Category:

Science & Technology

Tags:

• earth battery
• joule thief
• led
• battery
• free energy
• free power
• free electricity
• Stubblefield
• Tesla
• electronics
• green power
• lights
• free lighting
• energy
• experiments

[GBluer]

Thats Great Bill running a JT off an earth battery.

[Pirate88179]

Thanks. The folks on our Joule Thief topic on overunitydot com have developed some amazing joule thief circuits and I need to replicate some of those to increase my output. This was just the most basic JT circuit so hopefully, there is room for improvement.

Bill

[Pirate88179]

Thank you. That is very good information to have. I will do my best to make these measurements and calculations. Thanks again.

Bill

[crob227]

great job, five stars.

[Pirate88179]

Thanks man, I appreciate that.

Bill

[sidebander]

Lab assistant, hahahah!

[Drevtoobe]

The JT circuit has a fixed output power, independent of the load. That's in contrast to a battery power source were the output power from the battery is dependent on the type of load. So if you make the power calculation using the RC load, then reconnect an LED configuration, you will know how much power the LEDs are dissipating.

[Drevtoobe]

Suppose you measure 10 volts when you use a 1K resistor. If you change the resistor to 2K then the cap voltage will stabilize at a higher voltage. When you do the calculation again, you should measure the same power. As long as the cap is big enough it will smooth out the inductor pulses. If you multiply R x C, you get units of seconds, the time constant. As long as the time constant is 10x longer than the JT pulse period you are fine, the voltage across the cap will be near DC.

[Drevtoobe]

You can use that knowledge to make a very easy power output calculation for the JT. Just connect a bigish cap and a resistor in parallel as the load for the JT circuit. The pulsing inductor will charge the cap and the resistor will drain the cap. It will stabilize at a voltage were the average power out from the JT inductor will be dissipated in the resistor. So your JT output power is then V(cap)-squared/R.

[Drevtoobe]

Hey Bill, I mentioned to you how to measure the maximum power from any battery source and determine it's output impedance. For a JT circuit you are now working with a discharging inductor, so it's a different story. An ideal discharging inductor has a theoretical output impedance of infinity. That means it doesn't matter what value of resistive load you connect to it, the inductor will raise it's output voltage enough to keep the current flowing at it's initial rate.

[eroutt]

Nathan Stubblefield! yeah i almost forgot about him Nikola Tesla visited him if i remember right! i am going to find a documentary on him tonight:)thanks!!!

[Pirate88179]

The large supercap is made by Maxwell and is 3,000 Farad and 2.3 volts. Once charged up, I would think it will light stuff for a long time. It costs over $100.00 so I have to save up.

Bill