Joule Thief

[Pirate88179]

Hazans1:

Nice job on the coils!  Thanks for the magwire link.  I have been looking for a good supplier other than my local Radio Shack.  Great work.

Bill

[gadgetmall]

Here is a page with some of that info in a slider applet form
http://lectureonline.cl.msu.edu/~mmp/applist/Spectrum/s.htm
All that we are doing is well within the standard radio frequencies. So, I think we do need to contain these devices in faraday cages.

Cool gadget. I am envious of your knowledge.

I have a small collection of cookie tins (I collected them against mice in a cabin ahem!) Anyway I think it is easy enough to make a small metal box serve as electrical unit for a room or cabin. If it is big enough and if we get this right, we could even mount a plug into the side of one.

Just imagine cadbury biscuits making the lights go on!

I'm stoked. After getting 80 volts I am waiting impatiently for the precision pots for tuning a MK3 or 4.

jeanna

Jeanna your a sweet person . You have far more marbles left than i do  and you can learn morse in less than a week .. once you learn it you never forget it . Keep on keeping on !! ( ive been listening  to much  my web site  hehe )  Biscuit light JT  they are going to say What is the world is that ?

Al

[Pirate88179]

@ Jadaro:

I find what you are working on interesting as well.  We ran into Helmholtz in the earth battery research and now he pops up again here.  Keep up your experiments and keep sharing them with us.  Thanks.

@ IST:

I hope your time here with us is not done....I understand about work though.  I have had little time left after working these past few weeks.  I appreciate all of your contributions, research and experiments you have posted here.  Thank you.

@ MK1:

Same thing.  I hope you continue to join us when you can.  You have contributed much to our knowledge base here.  Your devices (MK1, 2, 8 etc) are just now being successfully replicated here by some.  These are great achievements and I know we all appreciate your sharing them with us.  Thank you.  Best of luck to you in your work and, as I said, I hope you can continue to be with us when you can.  Take care.


@ All:

That is great info Gadgetmall posted about the rf business.  Just for kicks, the other day I test my standard JT circuit (3904, 1k resistor, 1" ferrite toroid) with one of my RF detectors that I use in my business to locate wiretaps and hidden cameras for some of my clients.  It has a freq. range of 50 mHz to 6 gHz.  For what it is worth, it did not detect anything from the circuit.  So, based upon what Gadgetmall posted, I would guess that the freq. on this JT is either higher, or lower than my detector's range.  Common sense would lead me to believe it is lower than the range.  Just thought I would share this little test.

Bill

[gadgetmall]

@ Jadaro:

I find what you are working on interesting as well.  We ran into Helmholtz in the earth battery research and now he pops up again here.  Keep up your experiments and keep sharing them with us.  Thanks.

@ IST:

I hope your time here with us is not done....I understand about work though.  I have had little time left after working these past few weeks.  I appreciate all of your contributions, research and experiments you have posted here.  Thank you.

@ MK1:

Same thing.  I hope you continue to join us when you can.  You have contributed much to our knowledge base here.  Your devices (MK1, 2, 8 etc) are just now being successfully replicated here by some.  These are great achievements and I know we all appreciate your sharing them with us.  Thank you.  Best of luck to you in your work and, as I said, I hope you can continue to be with us when you can.  Take care.


@ All:

That is great info Gadgetmall posted about the rf business.  Just for kicks, the other day I test my standard JT circuit (3904, 1k resistor, 1" ferrite toroid) with one of my RF detectors that I use in my business to locate wiretaps and hidden cameras for some of my clients.  It has a freq. range of 50 mHz to 6 gHz.  For what it is worth, it did not detect anything from the circuit.  So, based upon what Gadgetmall posted, I would guess that the freq. on this JT is either higher, or lower than my detector's range.  Common sense would lead me to believe it is lower than the range.  Just thought I would share this little test.

Bill

Hi Bill . For sure that Fancy detector will detect an fm transmitter ? well you shouldn't have posted that now they will go buy one of those cheap Mr microphones operates in the 28 -30 MHz Fm/Am band. Otherwise called HF  or enev better a cheap kids walkie talkie . 27-28 Mhz .. anyone remember CB .well below 50 mhz.

[innovation_station]

so im winding my second 5.5" toroide ... i finished the last one ...  ran out of 22 ga  but i managed to get 2 pickup coils of 30 strands each ... and it worked out to 22 turns 11 up 11 back both sides

my newist pick up im winding is 28 ga....  so yea i made it 15 feet long ....  im aiming for 50 wires of 28 ga... i will build 2 of thease for this coil .....


the coil is called !ST MK1 100   5.5 "  YES THAT MEANS 1OO OUTPUTS....      200 ENDS...




ist

here is a pic of 50 strands of 28ga.. twisted 15 feet long  I also added my rings ... 60 and 100