Successful TPU-ECD replication !

[Jeff B]

@Otto


My suggestion is ...............
..................
..................

Jeff.

PS: I would NEVER mention Batteries...

oops wrong turn....
it is tubes you need.
and batteries too, no i mean two 
you need two seperate controllable DC sources.



Marco.

Ha Ha       *grin*

Actually, I thought Otto was refering to hidden batteries in a TPU.
(Nothing to do with what type of supply).

Jeff.

[turbo]

Nothing to do ay?
i just added that because i know there are some folks that find this intresting.
Jou Sugest to take the SS route because you think it will save you time ,and i sugest you use TUBES.

M.

[Jeff B]

@Marco

Nothing to do ay?
i just added that because i know there are some folks that find this intresting.
Jou Sugest to take the SS route because you think it will save you time ,and i sugest you use TUBES.

M.

Otto was trying to make a tube oscillator to power the coils.
I was meaning use the SS for frequency generation, and the Tubes to amplify & deliver to the coils.
I didn't mean SS for both the freq AND the amp.
I'm in favour of the valves to power the coils.

Jeff.

[Jeff B]

.... you need two seperate controllable DC sources.

This is important to create the MDC
The MDC is a polarized DC wave in one direction yet constantly changing.
It is a sine wave like classic AC but it never reverses.
MDC stands for MODULATED DIRECT CURRENT always dropping and rising but never reverses.

You can create this type of current simply by taking an AC wave and switch it in series with a DC source, the AC signal now simply ADDS on top of the DC source.
For example we take a 9 volt AC sine wave and we switch it in series with a 9 volt batterie,
The resulting wave will be cycling between zero and 18 volts but it will never REVERSE it's direction.
in other words ,it does not alternate like AC does , but it does cause induction ,the field is still always changing.

you cannot create an MDC wave with one source because you cannot add the same source in series with itself....this is why two DC sources are needed.

The output of the tpu was called ADC, Alternating Direct Current , i prefer to call it MDC

the same thing applies to tubes, some people forget tubes are still DIODES.
Diodes conduct in one way only.

if we want to amplify let's say a signal from a microphone, which puts out AC signal, we cannot feed this directly into the tube because it will only handle one half of the AC signal.

Therefore we switch in again the DC source in series with the mic so it becomes polarized and the AC signal simply adds to the DC and again we have our MDC which the tube can handle, it is always positive or negative.

The dancing magnet video i made was created with this type of current.
It was fed an AC 5 volt signal in series with a 12 volt DC current.
The resulting wave was cycling between + 7 and +17 volt always positive but yet it caused the effect.

@GK,
My images you posted are wrong.

Marco.

A thought -

Re: MDC:

Your comments about needing MDC for the TPU are intersting.
The constant DC condition put on the coil will result in the coil being polarised, like an electromagnet.
ie: it will have a North & South pole (somewhere, decided by the winding of the coil).

In one (or more) of the SM videos, he starts the coil by inserting 2 magnets.

So here's what I'm thinking -
Are the 2 magnets creating the same effect as your DC offset (contained in the MDC).

At a glance, This would appear to correspond.
It would also mean that you could just inject an AC sinewave into the coil, as the polarisation is already in place - by the magnets.
I wouldn't think that the AC would overide the polarisation, as I doubt if you could completely cancel out the magnets force.

The stronger the magnets, the stronger the polarisation.

What are your thoughts ? 

Jeff.

[turbo]

What do you think will happen if you feed a dirty signal from a SS generator into a nice and clean Tube amp?
Do you really think the Tube amp is going to get rid of the dirt?
Personally i think this nice Tube amp will Amplify the dirt!!!
You need three EXACT frequencies running so use tubes.

Steven said the use of the magnets are not necessary as used in a few of the units.
There were different designs.
some designs were based on different control and start up systems.

The magnets were placed on what he calls "receptors"
I do not know what was their purpose but i do know that on the yoke the magnets are used to set up a carefully balanced magnetic field which helps to drive the electron beam.

M.