user TURBO?s replication of Steven Mark?s TPU ?

[Groundloop]

[EDIT] Deleted.

[wattsup]

Hey you guys, maybe someone can try what I have been looking at for the last day or so, because I can't seem to figure this out.

I have a PC frequency generator running on my high quality sound card, then into a small sound mixer that sends the signal through the head phones output. I put both left and right sides together for mono output frequency feeding my home built TPU (my own version). I have had no luck at all even seeing a spike of any kind out of the ordinary. I can even hear the frequencies 1, 2 3 or more if desired on my PC speaker system. Really freaky sounds.

My oscilliscope is a Hitachi V-650F 60MHz model and it is working fine on other things that I use it for.

Anyways, to make a long story short, I got sort of tired of putzing around with the TPU so I started using other regular transformers, and I remembered the other day I was hitting this 110VAC transformer with a 12VDC impulses shock and had seen some high voltages comming out the tranformer in the 800 VDC range. One of you said this was normal for a voltmeter.

Anyways, I made a new set-up with the frequency going to the 110VAC transformer input, and the transformr AC outputs (35VAC-0-35VAC) going to a bridge recifier and then I put a small 12VDC light on that plus my volt-meter and oscilloscope. I then started to play with frequencies.

The result is that with only one frequency, I am feeding the transformer a mV frequency and getting 10.5 - 10.7 VDC comming out. My small DC bulb is steady and bright and the scope is showing the same results. I have found that starting at 72 herts until 140 herts, this power level is the same with maybe slight variation. Adding two or more frequencies is not making any difference.

I made a quick diagram to show what I have tried.

Can someone else try this to confirm this and advise.

[hartiberlin]

@wattsup
what frequency do you use exactly ?
Is it sine or square wave you feed into the transformer ?

If it is square wave, is it exactly an AC square or something that
goes from 0 Volts to 200 Millivolts positive or something like this ?

Please post scope shots of the input and output voltages.
Many thanks.

If you really can amplyfy a MilliVolts square signal with
low power into about 10 Volts at 1 to 2 Watts,
that would be nice !

Many thanks.

Regards, Stefan.

[wattsup]

Oops.. I think I just wasted a day of trials.  I had so many wires all over the place. While my voltmeter was reading 0.01 on the 20VDC scale comming from the frequency, I had put my scope on the common wire comming from the frequency generator, so I was seeing straight line on the scope and very low voltage on the voltmeter. When I tested the transformer output and was getting 10.6 volts, this seemed great.

I just put the scope on the left/right signals comming from the frequency and now see big movement on the scope around but still only see 0.01 volts on the voltmeter. Geez. Cancel the red alert and back to the drawing board.

However, I do like the esing of frequencies with a regular transformer because there is some direct response that could probably apply to my TPU later on. Sorry to all.

[CTG Labs]

@Grumpy, I have a frequency counter, couple of scopes and all the rest of it, just cant fit it all in the photo!

@Alex, thanks very much, looking forward to receiving it.  It will be strapped to the inside of my coil, for self contained frequency generation.  (ps. did you drill the holes already )

@Wattsup, I take it you have only one sound card and are mixing the 3 frequencys in stereo and bridging them and feeding to your TPU?  This will not work.  You need 3 control coils on your TPU and each must have its own frequency, you either need to filter the mono output, but thats silly, or have 3 soundcards, if you can configure that, or 3 PCs.  Better to build a circuit of your own or get some signal generators.  Another tip, your sound card will not cut anyway, the frequencys cant go high enough.


Regards,

Dave.