Giantkiller moves forward into Full Heterodyning.

[innovation_station]

@ gk how did you come up with the 3 knobed freq gen  i would like 1 of those for my tube rack unit could you post the links  to where you got or how you built that board

many thanks

ist

[acerzw]

@GK & Ist

I just had a seriously scary idea... hence I have not even used my crayons to draw my first coil design yet!

See I think I might have just solved the Egyptian Tuning Fork puzzle...

Eek! It might, explain how the Egyptians cut their stones, moved them and then aligned them with such precision... OMG could they really could have had lasers!!! shit what do they put in the water around here 

http://www.overunity.com/index.php/topic,3461.msg54408.html#msg54408

I have asked hans to give his verdict on my idea as he is the 'Master of Vibration' in this forum by my way of thinking,,,. he said he would post his comments when he has some time soon... (that was before the laser idea smacked into my skull at high velocity... so I don't think he saw that revision of the post.. boy is he going to be in for a shock!)

GK hate to break the news but, the Egyptians, its very probable, that they had the 'original' BFG2000! Except maybe it wasn't big... and that maybe is what the devices the statues have in they hands are... their divine right to rule, enforced with a class AAA laser pointer... and some nasty burns... just like Ezekiel said...

My coil is really going to suffer now, 'cos I just gotta knock up a cartoon of this idea to post over on that thread...

Acerzw...

[innovation_station]

@bolt

i took the amp apart here is the pic i have circled what i have found to be the input and output roll off caps but im only guessing could you confirm wich caps should be lifted to increase bandwith

thanks

ist

[bolt]

IS thats a bit too fancy to play with for tpu work. In anycase it will take many hours to scope through most of that circuit lifting anything that looks like a low pass filter and is not a simple case of lifting 2 caps although it can be on some really simple cheap amps. The first thing would be to measure what that amp can do off the shelf before it rolls off. Some are already spec for -1 db at 30kz.

Recent thoughts on the tpu has led me to believe the high frequencies are MUCH higher then first thought up to several megs to put the entire collectors into true LC rf type resonance and then control that with bursts. The 5Kz clock on the tpu is no freak. It used to be a standard clock for switch mode PSU because the ferrite cores begin to sing quite nice for good power transfer at this frequency.  However, nowadays the clock is often 35kz plus so you cant hear it. If you really want to get a conventional view on this type of complexity then study MRI scanner stuff. The 3D magnetic masking uses several k hz to induce the magnets which are then bust with RF and the precise point to the hydrogen atoms to create the Lamour or otherwise snipped

"gyromagnetic ratio for hydrogen and n0 is the Lamour frequency. For hydrogen the Lamour frequency at 1 Tesla is 42.6 MHz. Thus at the low field of interest to this programme (approx. 0.01 T) the Lamour frequency is around 400 kHz. Simplistically it can be imagined that the magnetic moments have lined up with the field to give the body a net magnetisation, M0, parallel and proportional B0. The application of an RF field at the Lamour frequency perpendicular to B0 will cause the nuclei to become excited which in turn causes the net magnetisation vector to precess about B0. When the RF signal is removed the net magnetisation decays to its equilibrium alignment, emitting an RF signal at the Lamour frequency. This signal can be detected by a receive coil and used for NMR spectroscopy or MRI. The size of the signal increases with M0 and thus with B0, this is the reason that conventional MRI systems use a high magnetic field. This project aims to extract the maximum information from the small signal at low field rather than using expensive high field magnets to generate more signal.

To obtain an image from the NMR signal requires a method for extracting spatial information from the signal. This is achieved by a combination of techniques. First a field gradient is superimposed over B0 so that a 2D slice of the sample can be selected, i.e. only a slice of the sample sees a magnetic field to give a Lamour frequency that matches the coil and electronics. Then complex sequences of RF pulses and Fourier transforms are used to extract spatial information in the 2D slice. "

This may appear to be leaving the TPU in the dark but i believe its very relavent. If you want to make a controlled magnetic field you can only do that with precision audio/RF but it does NOT need to be done with complex logic switching.

GK class A amp should do well though even though this idea of mine is now about getting on for 3 weeks old and ideas change fast around here:) But as testing extends up through 500k+  then more complex RF sig gens will have to be built.

This still be worth using in the short term until such time that someone here can really identify some positive results for given frequncy bursts. Whatever the 5Kz is significant and appears universal throughout the tpu series BUT its only a magnetic carrier. The frequncy burst will be RF for sure which is what produces the RF type spark when the tpu was shorted out and NOT the 5kz. 

Can we make scalers up here? Yes for sure the RF reduces the need for high voltages, spark gaps and is more refined way of doing things. I believe Bedini is fast moving away from revolving wheels to solid state devices. There is no need to make a mechanical rotation when it can be simulated. He just fires his coil and collects the RE into an open collector non capacitance, no current drawing arrangement. Still crude yes but potentially workable. Its a kind of a poor mans simple tpu yet the tpu is a highly tuned effective perfectly balanced design but can be a pig to get running sometimes as SM said even when you KNOW how it works it can still be a pain to oscillate in harmony the several internal frequencies.

Look when the first sparks transmitters Marconi etc sent messages across the Atlantic the sparks gaps were packed full of energy and harmonics as raw crude power but who cares? none did back then when your the first to use it on air but later it didn't take researchers very long to realize the systems could be tuned. Very quickly the spark gap and high voltage coils disappeared in favor of tuned tank tube amplifiers. This rules out pulses and high voltages although squares can be used in the early stags to preform a stable referenced signal they would never be used to produce clean RF having undergone sin low pass conversion long before the output stages. So do you want to cook on an open smoky wood fire for the spark gap high voltage pulse system or cook using a clean efficient tuned microwave oven?

But if you play with magnets be careful:)

[kames]

@bolt

i took the amp apart here is the pic i have circled what i have found to be the input and output roll off caps but im only guessing could you confirm wich caps should be lifted to increase bandwith

thanks

ist

@innovation_station

Looks like you don?t know enough about audio amplifiers. To replace a couple of caps is far not enough to increase the bandwidth of your amplifier. I just want to make you aware if you don?t want to waste your money for buying another amplifier if you break this one.
My advise, don?t do that. The caps that you highlighted have almost no effect on the bandwidth. Not that I am trying to teach anybody.

Kames.