Selfrunning cold electricity circuit from Dr.Stiffler

[DrStiffler]

@Spokane1

I think I remember you stating you scope the collector of your oscillator? I prefer to use a sense coil lightly coupled to the core itself, reason being you can see many of the components that are not seen on the collector. The following two images are from using a sense coil that is operation in SEC mode, please note the frequencies.

It just may provide a little extra info should you need it.

[retrod]

@Spokane1 and @All

If you can not hold one end of a neon and touch the other to the input of the AV Plug, SEC conditions is not possible. If this HV is not present and interface is not established.
Both sides of the neon will light at the Plug input. Then when touched to the output of each diode, alternate neon electrodes will light to match polarity.

Thanks....

Dr Stiffler, I'm getting a bright neon at the test points you indicated. I can't get a good focus on a closeup photo however.
Dave

[xee]

Will someone please post URL for ordering coils? I can not find it in the over 60 pages of thread. Thanks.

[amigo]

Will someone please post URL for ordering coils? I can not find it in the over 60 pages of thread. Thanks.

Ferrite Loopstick Antenna Coil Crystal Radio 680uh

[derricka]

@RStiffler

Thanks for letting me know about Ben K4ZEP 's important role in all this, and your circuit modification.  I will be happy to draw a custom version of the PCB art layout for Ben, but first, I would need to obtain a copy of 'Thomas' schematic that he would be referring to.  As stated in a previous post, my goal is to foster reproducibility, so while I do want to limit the number of circuit versions floating around in this forum, I am willing to make versions that deliver the best results, and (or) offer the most promising avenues of exploration to key members, of course, as time permits. 

DerrickA

P.S.  I miss your YouTube videos! will they be reposted?