[sdiy] Fwd: AD633

Oren Leavitt obl64 at ix.netcom.com
Thu Dec 26 22:28:00 CET 2019


Got it! Thanks Dave

On 12/26/19 3:04 PM, Ben Stuyts wrote:
> Trying to get Dave’s PDF through...
>
>> Begin forwarded message:
>>
>> *From: *David G Dixon <dixon at mail.ubc.ca <mailto:dixon at mail.ubc.ca>>
>> *Subject: **RE: [sdiy] AD633*
>> *Date: *26 December 2019 at 19:42:37 CET
>> *To: *"'Ben Stuyts'" <ben at stuyts.nl <mailto:ben at stuyts.nl>>
>> *Cc: *<synth-diy at synth-diy.org <mailto:synth-diy at synth-diy.org>>
>>
>> Thanks, Ben.  The document is attached.  I use Primo PDF to make PDFs 
>> from Word documents, and it is a bit of a memory hog.
>>
>> Cheers,
>> Dave
>>
>> -----Original Message-----
>> From: Ben Stuyts [mailto:ben at stuyts.nl]
>> Sent: Thursday, December 26, 2019 6:02 AM
>> To: David G Dixon
>> Cc: Chris McDowell; synth-diy at synth-diy.org 
>> <mailto:synth-diy at synth-diy.org>
>> Subject: Re: [sdiy] AD633
>>
>> Dave,
>>
>> There was a limit of 200 KB on attachments, so yours did not came 
>> through. I’ve upped the limit to 1 MB now, so if you resend it, it 
>> should appear on the list.
>>
>> Thanks,
>> Ben
>>
>>
>>> On 26 Dec 2019, at 06:01, David G Dixon <dixon at mail.ubc.ca 
>>> <mailto:dixon at mail.ubc.ca>> wrote:
>>>
>>> Hi Chris,
>>>
>>> I wrote up a little document explaining the circuit, which is 
>>> attached (not sure it will go to the whole list or not -- can we 
>>> attach files on list emails?).
>>>
>>> If you would like me to make you a handmade PCB as shown in the 
>>> document, just let me know.  I'd charge $15 for that, plus shipping. 
>>>  I could make it immediately.
>>>
>>> Cheers,
>>> Dave
>>>
>>>
>>>
>>> -----Original Message-----
>>> From: Chris McDowell [mailto:declareupdate at gmail.com]
>>> Sent: Wednesday, December 25, 2019 5:49 PM
>>> To: David G Dixon
>>> Cc: klangbau; synth-diy at synth-diy.org <mailto:synth-diy at synth-diy.org>
>>> Subject: Re: [sdiy] AD633
>>>
>>> I would looove to see your no-trim multiplier, David! :) I've had 
>>> great success with the osamu et al schematic with the extra cell in 
>>> series for temp compensation, but avoid trimmers at all (most) cost, 
>>> for production but especially for personal builds! no time for fuss 
>>> in these here holidays.
>>>
>>> Cheers,
>>> Chris
>>>
>>>> On Dec 25, 2019, at 6:07 PM, David G Dixon <dixon at mail.ubc.ca 
>>>> <mailto:dixon at mail.ubc.ca>> wrote:
>>>>
>>>> Yes, I have an idea.  Use linearized 2164 to make your multipliers 
>>>> for the frequency shifter.  I have a nifty little design I could 
>>>> send you which doesn't require any trimming, and gives very 
>>>> accurate balanced multiplication with a minimum of parts and fuss.
>>>>
>>>>
>>>>
>>>> -----Original Message-----
>>>> From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] On Behalf 
>>>> Of klangbau
>>>> Sent: Wednesday, December 25, 2019 3:30 AM
>>>> To: synth-diy at synth-diy.org <mailto:synth-diy at synth-diy.org>
>>>> Subject: Re: [sdiy] AD633
>>>>
>>>> Hallo,
>>>>
>>>> looking for AD633 to a reasonable price. Ordered a few in
>>>> China/ALI-Express in SOP-8 for 3€ each. Same as others I tested last
>>>> year; don't work and drive hot after a few seconds. My test circuit is
>>>> fine and works with AD633 bought for 10€ each. Need it for my
>>>> Frequency-Shifter.
>>>>
>>>> Any idea?
>>>>
>>>> willi
>>>>
>>>>
>>>> willi sauter
>>>> KlangbauKoeln
>>>>
>>>>
>>>>
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>>>>
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>
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