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the generator is new. it's digital. 0.2 hz to 2MHz. 1 to 10 v
i have two coils i was playing with:
a small 2x2 spool of hook up wire (48uH) and some left over magnet wire on a spool 3" dia and 4" high (400uH).
for tutorial number two where you show how to light the neon but keep the small light out, i get a dim illumination with the neon. i've tried a 120v neon like yours, and also a 90v neon from rick friedrich's order house.
the dim illumination occurs and does not extinguish. it doesn't get brighter either. for the heck of it, i hooked one end of the bulb to the sig gen and the other end to a water pipe and it stays illuminated (dimly). also, if i hook one end to the sig gen and the the other end only touches my fingers, it will illuminate dimly as well.
no sweeping at all will illuminate it more. i've tried small ceramic caps:
151, 221, 471, 102, 103, and 104.
the sig gen works cause i hooked my oscilloscope directly to the generator and the waveforms are perfect.
bryan
Hi Bryan,
I think one problem is your 48uH coil is too low of Inductance to Resonate below 2MHz so don't use that one.
You should get results with the 400uH using frequencies below the 1Mhz range.
I think the other problem is those caps, I'm not sure about those numbers they maybe in the nano Farad range if so, then they won't work. You need caps in the pico Farad range from 300 down to 50. Check them if you have a capacitance meter.
The best is to get an old tube radio tuner (variable capacitor) which is ideal because they usually have a range of 500pf down to 80pf. You can find these used on eBay for about $15.
thanks for the tips. i'll look into that. i'll also buy an air cap. it still doesn't explain the issue im having with the light illuminating. it's the same generator that jetis bought. just in case, i found a generator just like yours on the internet.
it's on the way.
bry
gotoluc:
i've purchased another signal generator. it's the same one you have in your videos. strangely, when i hook the positive lead to one end of my neon, i can dimly illuminate the neon just by touching the opposite lead with my finger. i can do this with any setting on frequency as well as any setting on the volts. it's dim, but still illuminated. these are 90v neons that i bought from rick's website. i have not played with any coils yet, but i'll try your tutorial again tonite.
any ideas why my neons are lighting up?
bryan
gotoluc:
i've purchased another signal generator. it's the same one you have in your videos. strangely, when i hook the positive lead to one end of my neon, i can dimly illuminate the neon just by touching the opposite lead with my finger. i can do this with any setting on frequency as well as any setting on the volts. it's dim, but still illuminated. these are 90v neons that i bought from rick's website. i have not played with any coils yet, but i'll try your tutorial again tonite.
any ideas why my neons are lighting up?
bryan
Hi bryan.
In your SG there is an input noise filter. That filter has a small leakage current sufficient to light a neon dimly.
For some (not all) power filters, this can be prevented by turning the power connector plug 180 degrees.
But better earth ground the chassis, this is a good precaution to have all your instrumentation grounded, as the semiconductor ICs you may use are not fond of this voltage, most often the semiconductor is not destroyed immediately, but the chip may be harmed so the reliability is reduced.
thanks guys for trying to help me with this.
well, i've finally had a little luck.
first of all though, let me tell you that when i hooked my sig gen to an inverter and ran it off a battery i could not replicate the strange illumination.
it does it when i plug it into the wall.
so, i finally got it to work. it works on the inverter as well as the wall outlet.
gotoluc was spot on when he said the 48uh coil was too small.
i pulled it off with the 400uh coil. i wasn't going small enough with the caps.
i ended up using 15pico cap to pull it off.
i noticed a couple interesting things. when i remove the neon, the small light glows dimly. also, i noticed that if i touch the coil, the neon extinguishes.
bryan.
thanks guys for trying to help me with this.
well, i've finally had a little luck.
first of all though, let me tell you that when i hooked my sig gen to an inverter and ran it off a battery i could not replicate the strange illumination.
it does it when i plug it into the wall.
so, i finally got it to work. it works on the inverter as well as the wall outlet.
gotoluc was spot on when he said the 48uh coil was too small.
i pulled it off with the 400uh coil. i wasn't going small enough with the caps.
i ended up using 15pico cap to pull it off.
i noticed a couple interesting things. when i remove the neon, the small light glows dimly. also, i noticed that if i touch the coil, the neon extinguishes.
bryan.
You may have a grounding problem that's been causing the Neon to light all this time. Maybe the hot side of the electrical outlet you're using for the SG is reversed with the neutral?
Glad you got the coil to Resonate
When a circuit is in resonance it takes very little to disturb it. Just waving your had by the circuit will have an effect on it and much more when removing a component. You need to re-tune for any changes.
Try raising the capacitance value in small increments if you can and observe the effects. I think 15pf is a little small. When you raise the capacitance you will re-tune to a lower frequency. There will be a cap value that will be most efficient if you are using the 2 light bulbs tuning method.
Armagdn03,
A while back, somewhere, you had mentioned I should try grounding in different places on my fun with lc's setup. I had went around with that for some time, and nothing came of it. Assuming I missing I kept it in my mind, and watching that Eric Dollard lecture on youtube, YouTube - Part 1 of 6: Eric Dollard Tesla Longitudinal wave Energy SBARC Ham Radio with Chris Carson , he insists that the ground must be pretty solid.
May I ask what part of the setup you were talking about putting to ground?
Traditional Tesla coil patent schematic style?
And how heavy is the grounding that you had worked with?
I just ordered some Dollard material from borderland sciences, I'm pretty excited to see his angle on things. And I'm excited about the practice I'll get with the big words as well.. I need all the help I can get, your posts give me a run for my money. I think I have learned more technical words from you than I have so far in my 2 years of engineering school!
That was a while ago, I really wish I could remember. I think I was referring to the output, that grounding the rectifier in various locations gives a small 20% or so boost to output power.
Yes it was a bit ago.
I'm still playing with the relationship between the primary and the pickup coil, different wire type, sizes, etc. Next time I'm happy with a setup I'll play with the grounding stuff again.
Thanks anyway
Allow me to enter this topic conversation and to contribute (if i can) to the common cause.
Tesla immediately understood that resonance is the way to go. He stressed that "energy amplification happens that way". Of course a standing resonance, no matter how enormous (VA) maybe, current science accepts that bears no energy production capability.
Regards,
Baroutolgos
Can anyone tell us the medium and high frequencies that were being used in the TPU Flash Over video on youtube?
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