ucd 25 watts to 1200 watts using 2 mosfets - Page 143

necrofago · 23rd October 2011, 03:10 AM

I just get the cores from kits and parts, t106-2, now i got a quiestion about the winding of the toroid. I need a 30uh inductance, but the mini ring core calculator app, says me i need 47 turns of AWG19, but i think the diameter of the wire its too small for +-35v? its about 70w rms.

So, i can winding 3 wires in parallel at same time on the core? even if i above the wires ?

Hope u can understand me and sry for my bad english.

CPX · 29th October 2011, 09:13 PM

AWG19 is enough up to 150 W rms in 8 ohm or 75W rms in 4 ohm

Dzony988 · 15th November 2011, 12:30 PM

Can anyone help me please!?

Can anyone look at Farnell and write me here "order codes" for toroid cores that can I use for output inductor or whole inductor 20-22uH (15-20A current). I dont know what can I use because Farnell got lot of cores and inuctors...

I dont whant EE cores only.

Thank you!

theAnonymous1 · 15th November 2011, 01:00 PM

Quote:

Originally Posted by Dzony988

I dont whant EE cores only.

Does that mean you only want EE or not?

Dzony988 · 15th November 2011, 01:02 PM

Without EE cores

Probably best solutions is "done" inductor or toroid core

lorylaci · 15th November 2011, 01:53 PM

Quote:

Originally Posted by Dzony988

Can anyone help me please!?

Can anyone look at Farnell and write me here "order codes" for toroid cores that can I use for output inductor or whole inductor 20-22uH (15-20A current). I dont know what can I use because Farnell got lot of cores and inuctors...

I dont whant EE cores only.

Thank you!

For that you would need Micrometals or other iron powder toroids. Farnell does not have them. (at least i haven't found any so far)
Toroids, Ferrites, Parts, Kits, Toroid King, QRP Erector Set
Here you can buy them at a reasonable price, and they ship world-wide.

Dzony988 · 05:00 PM

Yes I understand but I only can bay and order at Farnell from Serbia.. That why must to be Farnell

Any inductor for this amp up to 800W 4 ohms without EE ferrite cores

Pafi · 15th November 2011, 06:41 PM

You can use ferrite toroid, if you crack it into quarters, and place gaps into them. Size matters. (A > 150 mm^2, Vgap > 600 mm^3)

theAnonymous1 · 15th November 2011, 07:13 PM

Dzony988, how many do you need?

I have some Micrometals T106-2 toroids. I have two already wound to 20uH and the others are 10uH.

I'm not sure that you can get 800W on these though.

Dzony988 · 15th November 2011, 07:47 PM

I need 10+ peaces... I can't belive that Farnell doesn't have inductors or iron powder cores for it

))

15th November 2011, 04:47 PM	#1427
Dzony988 diyAudio Member Join Date: Apr 2010 Location: Nis, Serbia	Yes I understand but I only can bay and order at Farnell from Serbia.. That why must to be Farnell Any inductor for this amp up to 800W 4 ohms without EE ferrite cores Last edited by Dzony988; 15th November 2011 at 05:00 PM.

15th November 2011, 07:13 PM	#1429
theAnonymous1 diyAudio Member Join Date: Feb 2004 Location: Anonymityville	Dzony988, how many do you need? I have some Micrometals T106-2 toroids. I have two already wound to 20uH and the others are 10uH. I'm not sure that you can get 800W on these though. __________________ "If you don't like funerals don't kick sand in Ninja's face." - Ninja

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23rd October 2011, 03:10 AM	#1421
necrofago diyAudio Member Join Date: Apr 2007	I just get the cores from kits and parts, t106-2, now i got a quiestion about the winding of the toroid. I need a 30uh inductance, but the mini ring core calculator app, says me i need 47 turns of AWG19, but i think the diameter of the wire its too small for +-35v? its about 70w rms. So, i can winding 3 wires in parallel at same time on the core? even if i above the wires ? Hope u can understand me and sry for my bad english.

29th October 2011, 09:13 PM	#1422
CPX diyAudio Member Join Date: Nov 2004 Location: Cluj	AWG19 is enough up to 150 W rms in 8 ohm or 75W rms in 4 ohm

15th November 2011, 12:30 PM	#1423
Dzony988 diyAudio Member Join Date: Apr 2010 Location: Nis, Serbia	Can anyone help me please!? Can anyone look at Farnell and write me here "order codes" for toroid cores that can I use for output inductor or whole inductor 20-22uH (15-20A current). I dont know what can I use because Farnell got lot of cores and inuctors... I dont whant EE cores only. Thank you!

15th November 2011, 01:02 PM	#1425
Dzony988 diyAudio Member Join Date: Apr 2010 Location: Nis, Serbia	Without EE cores Probably best solutions is "done" inductor or toroid core

15th November 2011, 06:41 PM	#1428
Pafi diyAudio Member Join Date: May 2004 Location: Budapest	You can use ferrite toroid, if you crack it into quarters, and place gaps into them. Size matters. (A > 150 mm^2, Vgap > 600 mm^3)

15th November 2011, 07:47 PM	#1430
Dzony988 diyAudio Member Join Date: Apr 2010 Location: Nis, Serbia	I need 10+ peaces... I can't belive that Farnell doesn't have inductors or iron powder cores for it ))