Joule Thief

[stprue]

Good idea about the battery, I didn't think about that...thanks!

[WilbyInebriated]

@ Wilby:

Thank you for your comment and again for the drinking bird suggestion.  I just received notification that it was shipped today.  This will be fun.  My friends that see this at my place will now know I am nuts, ha ha.  If it works at all, I, of course, will make some videos.  Thanks again.

Bill

sweet! it just seemed like the 'freest' way to do a make/break connection to me, i can't wait to see it!

[TheNOP]

@Mk1
i hope we are not in for an other ice age...

@All
i am still asking myself witch way i should go.

mechanical rotary switch
using a motor to turn it.
the switch would have to be custom made.

i could probably use multiple brushes around a flywheel that have only one contact.
that contact would be connected to the shaft and a brush used to pickup the output.
a mk8 would require 16 separated brushes, connected to the 16 caps separately.

someone have other ideas on how to easily make such switch ?


or full solid state

555 timer

decade counter/driver
either a 4017B,  7490 or MC14017
http://www.nxp.com/acrobat/datasheets/74HC_HCT4017_3.pdf
http://www.onsemi.com/pub/Collateral/MC14017B-D.PDF
need 2 of those for 16 caps

i can also use more of them as a frequency divider, up to divide by 10 for a single chip.
the 555 timer can then be use at a higher frequency for the jt


silicon controlled rectifier.
2n681 25amps/25volts
2n6835 25amps/100volts

the neat thing about scr is that they stay on as long as a minimum currents flow through them.
the problem with SS is: the SCR must be able to withstand the caps discharges currents.

i don't think i will have much problems at small scale if i choose my caps carefully.
but i do plan to try with 120 volts later and that mean really big currents spikes...

[stprue]

At some point this weekend I will try to post up some pictures of my hazen1 coil set up.  It is not perfect but I can get about 95 to 106 rectified dc volts and I can adjust and add stuff to this rig.  Not bad for my 2nd JT...I have also recently made a 555 IC that I can adjust the wavelength and frequency that I plan on experimenting with.  I will post all results.

[stprue]

Oh I forgot to mention the 106 voltage only pops up when I ground it, witch is through my power supply so I'm not sure if it's accurate!