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Re: [Amps] Need Zener for 2KD-3

To: AMPS <amps@contesting.com>
Subject: Re: [Amps] Need Zener for 2KD-3
From: Alek Petkovic <vk6apk@bigpond.com>
Date: Tue, 03 Feb 2015 07:09:44 +0800
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Yeah. Get a string of 1N5408s or 6A10s to make up the 5.6V you want and stick them into the place where your 1N4561 was, except turn them around so that the string is forward biassed. Then stick a few thousand uF electrolytic cap across the entire string, to improve the dynamic regulation and you're back in business.

Everybody has that stuff in their junk box.

If ya wanna go a bit more fancy, you can get a small rotary switch and tap off different diodes to set the ZSAC exactly where you want it, for the mode you choose to run.

73, Alek
VK6APK

On 3/02/2015 4:36 AM, Bill Turini wrote:
Folks

I need a zener for my 2KD-3. It's a 1N4561. It appears that they are really hard to find and exorbitantly expensive when you do. Has anyone found a source for a replacement at a reasonable cost?

Thanks,

Bill


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