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Author Topic: Tubes?  (Read 166757 times)

Offline wattsup

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Re: Tubes?
« Reply #390 on: February 17, 2008, 03:49:46 PM »
@MAC

Great post. Glad you are pointing to the bailing wire. Also regarding your last sentence of Tesla coil, I had mentioned this here;

http://www.overunity.com/index.php/topic,3972.msg74722.html#msg74722

All the best.

ADDED:

There are four caps, two black in series probably 100uf 600V, and two yellow with series or parallel unknown. I would guess the black caps being in series are used as an output voltage stabilizer. The two yellow caps are most likely for discharge. Two caps for two LTPU sections (only). Not three. Now to charge the yellow caps, you need to put them in conjunction to a circuit or coil of high induction, then discharge into a circuit of low induction. I don't think there is anything any more complicated in the LTPU.  The four center inductors are probably used too load the yellow caps.

Free Energy | searching for free energy and discussing free energy

Re: Tubes?
« Reply #390 on: February 17, 2008, 03:49:46 PM »

Offline sparks

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Re: Tubes?
« Reply #391 on: February 18, 2008, 05:10:40 PM »
@Macedonia CD

       The control coil magnetic field needs a fast change in flux so as to induce a current in the armature coil.  The faster it changes the higher the emf.  That's why you need tubes or mosfets so that the rise ramp is as linear as possible in the control coils. In a normal transformer the armature current would induce a magnetic field that would resist the change in the propogating field.  In the tpu the magnetic field of the armature coil is not in phase with the control coil input.  The current was not induced by an impressed voltage but by a magnetic field density change more on the lines of a generator than a transformer.  The changing magnetic field was radiated not induced.  Of course the control coils will see a limiting magnetic field but the radiated energy has already done it's thing.

     A second set of control coils and a second frequency will result in a pulsed tunneling magnetic field.  The tpu then becomes very similar to a two-phase electric motor . The armature coil see's a pulsating rotational magnetic field.

Offline RobotHead

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Re: Tubes?
« Reply #392 on: March 15, 2008, 04:14:56 AM »
This guy is a real artist when it comes to tubes.  I wonder if he'd consider working on OU?

Interesting video related to tubes and the process of creation!

http://dailymotion.alice.it/video/x3wrzo_fabrication-dune-lampe-triode_tech

RH

Free Energy | searching for free energy and discussing free energy

Re: Tubes?
« Reply #392 on: March 15, 2008, 04:14:56 AM »
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Offline miroslav

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Re: Tubes?
« Reply #393 on: March 15, 2008, 07:26:00 PM »
@RobotHead
very nice video  8)

Offline sparks

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Re: Tubes?
« Reply #394 on: March 15, 2008, 10:35:26 PM »
     The attached pic is a merge between a tpu and a tesla transformer.  The circle of tubes acts as the secondary in a tesla transformer.  The motor and the tpu ring are a tesla primary.    The tubes don't carry the current of the motor they just get the current circulating in the primary.  Just thinking about how he got his car rolling with tubes a motor and some wire.

Free Energy | searching for free energy and discussing free energy

Re: Tubes?
« Reply #394 on: March 15, 2008, 10:35:26 PM »
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Offline somamagus

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Re: Tubes?
« Reply #395 on: May 07, 2008, 07:45:12 PM »
Here is a very interesting video a friend recommended for viewing.

His quote "I could eat this stuff up with a spoon!"

http://www.dailymotion.com/video/x3wrzo_fabrication-dune-lampe-triode_tech

All the best

Soma


Offline pauldude000

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Re: Tubes?
« Reply #396 on: May 07, 2008, 08:49:32 PM »
@all

Two cheap sources for assorted old tubes. TV's...... In junk piles or garage sales..... You can still find them occasionally, and they are CHOCK FULL of oddball tubes. TV's have a large assortment of VHF/UHF tubes. Look for the antique looking TV's with the genuine wood case, and big as a dresser. I used to have a decent sized box full of tubes I scavenged out of only three TV sets. Best thing is you can also scavenge the tube sockets and tube RF shields this way.

Another place to look is antique electronic equipment, and old ham and other radio sets.

Right now, I have a couple of rectifiers that are as antique as you can find... They screw in like a light bulb, and are the size and shape of a large bartlett pear! (massive) Came out of an antique x-ray machine. :D

Paul Andrulis


Free Energy | searching for free energy and discussing free energy

Re: Tubes?
« Reply #396 on: May 07, 2008, 08:49:32 PM »
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Offline BEP

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Re: Tubes?
« Reply #397 on: May 08, 2008, 01:58:59 AM »
Here is a very interesting video a friend recommended for viewing.

His quote "I could eat this stuff up with a spoon!"

http://www.dailymotion.com/video/x3wrzo_fabrication-dune-lampe-triode_tech

All the best

Soma



Try eating this with a spoon  ;D

http://www.sparkbangbuzz.com/flame-amp/flameamp.htm

orbs

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Re: Tubes?
« Reply #398 on: June 20, 2008, 12:09:45 PM »
A repost with links made visible.
Looking at the specs, it sounds like the E88CC/6922 dual triode (long-life version of ECC88/6DJ8/6N23P) would probably be a candidate. In particular, it is still being manufactured by JJ Electronic and available for a reasonable price (if you don't need gold pins ;)). The 6922 is also still being manufactured by Sovtek (also for Electro-Harmonix as 6922EH). The PCC88/7DJ8 is the tv version of the ECC88 with 7V (or 300mA if connected in series) instead of 6.3V for heating.

[My idea being that if one already invests a lot of time then why not use a tube manufactured in this century and that has recently passed a functional check, rather than save a bit money (or likely pay even more for an old or NOS tube).]

Free Energy | searching for free energy and discussing free energy

Re: Tubes?
« Reply #398 on: June 20, 2008, 12:09:45 PM »
3D Solar Panels

orbs

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Re: Tubes?
« Reply #399 on: June 20, 2008, 12:12:11 PM »
A repost with links made visible.
There are two experimenting kits (Franzis Lernpaket R?hrentechnik and Lernpaket R?hrenradios) that include such tubes (the kit creator has even written a book in German about tubes working with 6V-60V). However, they might be slower at these voltages (the speed of the electrons passing from cathode to anode is proportional to the square root of the voltage, so it depends what the distance between cathode and anode of a particular tube is to compare the different voltages).

On a somewhat related note, tubes seem to be more popular again, there are even some valve workshops about them.

 

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