Author Topic: Talking about phase... (Read 67091 times)

Super God · « **Reply #90 on:** July 19, 2007, 04:21:01 PM »

I've taken pictures of mine, it's all wound and everything, the collectors, bias, and controls. Just figuring out a good oscillator plan with the tubes I'm going to order eventually (money issues)

Bruce_TPU · « **Reply #91 on:** July 19, 2007, 04:25:03 PM »

Hi Thaelin and All,

It is $34.95 per core with a minimum order of two. If you or one of the guys want to go halves, on the two order minimum shoot me an email. I have went halves with someone already. ALL core orders must be placed ASAP. Their next production run is August 8. If an order is not placed soon, it will not be in this production run.

Core: T650-52

Micrometals, Inc. Home Office

http://www.micrometals.com/contactus_index.html

Address: 5615 E. La Palma Avenue
Anaheim, CA 92807 USA

Phone:
714-970-9400

Toll Free in US:
1-800-356-5977

Fax:
1-714-970-0400

E-Mail:
sales@micrometals.com

tao · « **Reply #92 on:** July 19, 2007, 04:32:31 PM »

Got my cores from http://alphacoredirect.com/

Which seems to be one of the ONLY easy-to-buy-from-online core manufacturer

A recent core I bought was:
Standard Toroid PN# L40
PN# L40
$11.98 USD
4.870lbs
Epoxy Coated Toroid, Id=2.750", Od=5.250", Ht=1.125", 835 VA Relative Power Handling, 0.345 V/turn @60Hz, 15KG

Shipping was fast too and the core is very well made. They even make O-RING cores

, and will even do custom cores for you at a very fair price.

starcruiser · « **Reply #93 on:** July 19, 2007, 07:01:16 PM »

Quote from: Super God on July 19, 2007, 04:21:01 PM

I've taken pictures of mine, it's all wound and everything, the collectors, bias, and controls. Just figuring out a good oscillator plan with the tubes I'm going to order eventually (money issues)

Why not try a simple blocking oscillator design using a small torrid from a PC power supply and tap that for your open ended primaries? I recall reading that you can build 2 blocking osc and have one track the other and by adjusting the time constant of one you can create a simple frequency divider which is sync'd.

here a a couple of sites that might be interesting to review.

http://139.134.5.123/tiddler2/c0508/block.htm

http://home.att.net/~pldexnis/CTC2_how_it_works/blocking_oscillator.html

http://www.vias.org/eltransformers/lee_electronic_transformers_11_01.html

http://www.electronic-circuits-diagrams.com/psimages/powersuppliesckt6.shtml

http://www.du.edu/~etuttle/electron/elect37.htm

Thaelin · « **Reply #94 on:** July 19, 2007, 08:15:48 PM »

I am good for one. I will even take the two if I have to. Now just to figure out where to get the wire. I will figure on using #20 enamel for the bias wind. Any pointers on where to get the silver coated #16 at?
That way I will be on the exact page when I fire it up.

The only diff here is I plan to use the tl494 plls. I have yet to ever get 555s to be steady. That should make the controller more stable and run a lot higher in freq. That into opto's into gate drivers and on to the mosfets should do the trick.

Thanks Bob B. for the clarify on the windings.

thaelin

Quote from: btentzer on July 19, 2007, 04:25:03 PM

Hi Thaelin and All,

It is $34.95 per core with a minimum order of two. If you or one of the guys want to go halves, on the two order minimum shoot me an email. I have went halves with someone already. ALL core orders must be placed ASAP. Their next production run is August 8. If an order is not placed soon, it will not be in this production run.

Core: T650-52

Micrometals, Inc. Home Office

http://www.micrometals.com/contactus_index.html

Address: 5615 E. La Palma Avenue
Anaheim, CA 92807 USA

Phone:
714-970-9400

Toll Free in US:
1-800-356-5977

Fax:
1-714-970-0400

E-Mail:
sales@micrometals.com

gn0stik · « **Reply #95 on:** July 19, 2007, 08:58:46 PM »

Silver coated ezflow wire can be found in high end automotive audio stores.

Bruce_TPU · « **Reply #96 on:** July 22, 2007, 06:59:28 PM »

Hello all,

Here are some sources for silver plated copper solid wire. I would suggest not ordering yet, until we have a gauge or suggested range of gauges, as it is very pricey. Unless money is no matter to you.

Thank you Jason and Grumpy for your help in sourcing this information:
http://cgi.ebay.com/CRAFT-30-YARD-OF-24ga-SILVERED-WIRE-METALWORK_W0QQitemZ8174749479QQihZ 020QQcategoryZ41224QQrdZ1QQssPageNameZWD1VQQcmdZViewItem
http://cgi.ebay.com/Silver-Coated-Beading-Wire-Tiger-Tail-38mm_W0QQitemZ220131859114QQihZ0 12QQcategoryZ67718QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
http://www.alphawire.com/pages/254.cfm

Mil spec number for Teflon coated solid copper wire with silver plating is MIL-W-16878 - Google this and you get plenty of hits. This place carries it: http://www.weicowire.com/specpage.asp?nGroupID=190 I recommend searching for surplus - stuff ain't cheap. PTFE is "Teflon". FEP is very similar compound. The silver plating is what matters.

Super God · « **Reply #97 on:** July 23, 2007, 02:28:08 AM »

Quote from: starcruiser on July 19, 2007, 07:01:16 PM

Quote from: Super God on July 19, 2007, 04:21:01 PM
I've taken pictures of mine, it's all wound and everything, the collectors, bias, and controls. Just figuring out a good oscillator plan with the tubes I'm going to order eventually (money issues)

Why not try a simple blocking oscillator design using a small torrid from a PC power supply and tap that for your open ended primaries? I recall reading that you can build 2 blocking osc and have one track the other and by adjusting the time constant of one you can create a simple frequency divider which is sync'd.

here a a couple of sites that might be interesting to review.

http://139.134.5.123/tiddler2/c0508/block.htm

http://home.att.net/~pldexnis/CTC2_how_it_works/blocking_oscillator.html

http://www.vias.org/eltransformers/lee_electronic_transformers_11_01.html

http://www.electronic-circuits-diagrams.com/psimages/powersuppliesckt6.shtml

http://www.du.edu/~etuttle/electron/elect37.htm

I don't understand the blocking oscillator. Could someone explain what it would do? Does it just block out the negative cycle of a wave?

Bob Boyce · « **Reply #98 on:** July 24, 2007, 12:08:56 AM »

Looks like my open posts here need to end. The water for fuel crowd have begun to link here in the misguided impression that the RMF device is the same as the lower energy version that was designed specifically for the waterfuel application. I do not want to be responsible for encouraging the wrong kind of experimenters into dabbling with dangers they do not comprehend. I was afraid that this would happen. Those advanced enough in the art to experiment safely with this can continue to communicate with me via email or PM.

Bob Boyce

Grumpy · « **Reply #99 on:** July 24, 2007, 01:37:29 AM »

Thanks much Bob.

Bruce_TPU · « **Reply #100 on:** July 24, 2007, 01:52:23 AM »

A heartfelt thank you, Bob.

Your concern for those guys dabbling where they ought not tread, just shows what kind of fabric and character you are made of. And thank you for your continued availability.

High regards,
Bruce

starcruiser · « **Reply #101 on:** July 24, 2007, 02:01:53 AM »

Same here Bob, your contributions are appreciated as well as your offer.

starcruiser · « **Reply #102 on:** July 24, 2007, 02:05:36 AM »

@Super God,

I will post you something on the Blocking Oscillator that may help a bit later, I am still working and need to complete a project.

But in simple terms the blocking oscillator blocks the transistors conduction due to negative biasing from the coils wave. The oscillator can produce squarewave like pulse of short duration, this is depending on how it is designed/built.

I found the links I provided interesting due to the use in older TV's and the SM story about the exploding/Imploding GE TV.

HumblePie · « **Reply #103 on:** August 02, 2007, 10:28:56 AM »

Please do at least point to any 'additional' information you may have on the Blocking Oscillator, cuz its high on my need to know list! I will post back what I learn. Thank you all very much for sharing. Humble

gn0stik · « **Reply #104 on:** August 07, 2007, 07:23:55 AM »

Anyone here had any luck working with this design?

Rich

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Author Topic: Talking about phase... (Read 67091 times)

Super God

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Bruce_TPU

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tao

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starcruiser

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Thaelin

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gn0stik

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Bruce_TPU

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Super God

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Bob Boyce

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Grumpy

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Bruce_TPU

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starcruiser

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starcruiser

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HumblePie

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gn0stik

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