[sdiy] 3340 oscillator - current limiting resistor equation is wrong?

[Phillip Gallo]

Sorry,  not thinking clearly.  Of course, it's worse raising the voltage.
geez ...
So the data sheet value assume ~14Vdc rails.

p



On Sat, Nov 18, 2017 at 1:08 PM, Phillip Gallo <philgallo at gmail.com> wrote:

> The Current Limiting Resistor's value isn't so eccentric if the supply
> voltage was at the +/-18Vdc maximum.
>
> My guess.
>
> p
>
>
> On Sat, Nov 18, 2017 at 10:44 AM, Tom Wiltshire <tom at electricdruid.net>
> wrote:
>
>>
>> > On 18 Nov 2017, at 16:20, Florian Anwander <fanwander at mnet-online.de>
>> wrote:
>> >
>> > On 18.11.17 16:17 , Pete Hartman wrote:
>> >>
>> >> Could it be as simple as the closest E12 value without going over?
>> >>
>> > 1k would be much closer to 975R than 820R
>>
>> I agree, and for a current *limiting* resistor, I’d have thought you
>> wanted a slightly larger value to be on the safe side, rather than a
>> slightly smaller one.
>>
>> So no-one has ever come across this before?! Seems hard to believe.
>>
>> I notice both the V3340 and AS3340 data sheets say only “current limiting
>> resistor required for supplies greater than -6V” without actually providing
>> any equation or committing themselves to a figure!!
>>
>> Tom
>>
>> ==================
>>        Electric Druid
>> Synth & Stompbox DIY
>> ==================
>>
>>
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>
>
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