Re: Core for Output Transformer
|
No the power transformer T11. The ?BN61-002 shows lower loss than the BN43 equivalent.? ?It¡¯s 1:2.? I¡¯m gonna try to cap couple it so it doesn¡¯t carry the DC as soon as my iron heats up.? I¡¯m also playing with different chokes now to feed power to the FETs.? I¡¯m sure I can come up with something better than what¡¯s there.? I¡¯m thinking a wound choke with a center tap. One or two turns on a BN43-202 should be enough.
?
?
Dr. William J. Schmidt - K9HZ
From: [email protected] [mailto:[email protected]] On Behalf Of Glenn
Sent: Wednesday, May 16, 2018 10:14 PM
To: [email protected]
Subject: Re: [BITX20] Core for Output Transformer
?
Bill
do you mean you fitted it for the power feed to the finals instead of the Chokes?
glenn
On Wed, May 16, 2018 at 07:34 pm, K9HZ wrote:
Actually I just tried/ wound a BN61-002 and it seems to be the winner so far.? Doesn¡¯t heat up at full power and is extremely wide banded¡
?
?
Dr. William J. Schmidt - K9HZ
?
?
From: [email protected] [mailto:[email protected]] On Behalf Of Nick VK4PLN
Sent: Wednesday, May 16, 2018 8:09 PM
To: [email protected]
Subject: Re: [BITX20] Core for Output Transformer
?
THanks GLen.
I was about to suggest using dual bn43-202 for the output and power feeding... should be easy enough to fit in the existing board...
Wonder if it will be better to do this or a bifilar wound 10T FT50-43 for feeding in the power?
73 Nick VK4PLN
?
|
K9HZ
