Joule Thief

[jeanna]

Base coil
collector coil
pick-up coil

Is this correct?  I think this was Xee2's suggestion and I think it works.  I have been trying to remember to use these terms myself.

Yes, xee2 put it together as a suggestion and we agreed.

[I use the terms center tapped primary, and secondary, because I forget, and to save on the constant need to explain the center tapped part.]

thank you,

jeanna

[jeanna]

This is my EMPT
.... This configuration produces pulses of approx 160 volts @ around 20Khz.

You should be able to light a neon with that, and in fact one of those UNmodified led bulbs from LoA. Since you are in the UK, you do not have access to that LoA bulb, but I would like to make that work as you have.
I have those paint cans and without cutting them, I can just stack 2 of them but I do not understand what you are calling the jt.
Did you use the hook up wire because it is convenient? or are you finding you need it instead of more typical electronics type wires like awg 24 telephone wire?

What is the amps draw?

thank you,

jeanna

[crowclaw]

The one I keep calling the secondary is the one we decided to call the "pick up". This is because of the confusion with the seemingly 2 wires on the primary.

So, if you would rename or reconfirm the names you have used in your circuit, I will be much obliged.

Thank you,

jeanna

Hi Jeanna,  Thanks for your interest. Yes I've mistakenly named the secondary and primary... so the collector coil (primary) 14 turns _ secondary + (base coil) 2 turns. I will post the schematic but it's no different from the basic JT. The receiver coil is 14 turns only... identical but without the 2 turn base winding. This is just a pick up coil which suspended above the JT and provides enough energy to light the LED. The scope shot is the CE junction of the JT. The draw is approx 60Ma. The two coils are from an ongoing project I'm working on using a high power 150KHz sine wave oscillator. So theres plenty of scope for experimenting here.

[crowclaw]

@ crowclaw

Nice experiment.

Many thanks.

[crowclaw]

@ ist
Thank you for your interest.