K&K Audio / Lundahl Transformers

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K&K Audio / Lundahl Transformers

Primary inductance of LL1663, LL1664, and LL1682.

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Kevin,
Is there information on what the primary inductance is on these three OPTs? Info for inductance at 30mA, 60mA and 80ma for each of the OPTs in SE mode would be useful from a new design stand point. What the heck, I'm sure the Push-Pull guys would like to know what the push-pull inductance is for each of the OPTs too. Can you ask Par and see if this info is available? Thanks.
Rgs, JLH

Follow Ups:

Re: Primary inductance of LL1663, LL1664, and LL1682. - KevinC 09:00:11 07/29/03 (1)
Per's answer:
Regarding LL1663, LL1664, LL1682 primary inductance:
Primary inductance is inversely proportional to DC current gapping.
I show a few values in the data sheet. Other values can be extrapolated easily.
The LL1682 data sheet has been updated with primary inductance for 50mA and 100mA.
Primary inductance for PP transformers must be measured. However, I
estimate primary inductance to around 150 - 200H.

Kevin Carter
K&K Audio
www.kandkaudio.com
- Thanks Kevin, you're the Man! (nt) - JLH 09:48:07 07/29/03 (0)
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Re: Primary inductance of LL1663, LL1664, and LL1682. - KevinC 04:01:21 07/20/03 (1)
John,
I will see if I can get that info.

Kevin Carter
K&K Audio
www.kandkaudio.com
- Look forward to hearing what you find out. Thanks! (nt) - JLH 16:43:20 07/21/03 (0)
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