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

[Tom Wiltshire]

> 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
==================