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Re: Wellbrook traced-out loop amp schematics uploaded to Photos


 

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Thank you. I should note that my group opened and traced out 3 different ALA1530LNs and all had a single 82 pF cap across the two loop inputs. Apparently you had a variation if yours had two 82 pF? caps in series across the two loop inputs as your schematic shows (and the midpoint of them not going to common/ground either).

Steve

On 7/21/2024 9:58 AM, Martin - Southwest UK via groups.io wrote:

Mine added too, derived separately, useful for comparison purposes.
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On Sun, Jul 21, 2024 at 04:26 PM, Mike M wrote:
Schematic added:

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