[sdiy] 4046 in VCOs (was Hi frequency VC clock)

[mark verbos]

4MHz is noce, but how slow does it get? The range of the 4046 isn’t really pleasing me.

Mark




> On Jun 24, 2017, at 12:30 AM, Tom Wiltshire <tom at electricdruid.net> wrote:
> 
> Hi Tim,
> 
> Sorry, I didn't realise that was something not widely known. Texas do one too:
> 
> 	http://www.ti.com/product/LM331
> 
> As it happens, this evening I've been looking at the high frequency VC clock (4MHz) design in the Elka Synthex which is based on that very chip.
> 
> 	http://www.synfo.nl/servicemanuals/Elka/SYNTHEX_SCHEMATICS.pdf
> 
> You want page 17, the 5840 schematic.
> 
> Tom
> 
> ==================
>      Electric Druid
> Synth & Stompbox DIY
> ==================
> 
> 
> 
> 
> On 23 Jun 2017, at 20:16, Tim Ressel <timr at circuitabbey.com> wrote:
> 
>> Color me excited!  You can still get the LM331!  Its the Fairchild clone called the KA331. Mouser has it in stock for $0.56! Why didn't anyone tell me?
>> 
>> --tim (ordering now) ressel
>> 
> 
> 
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at synth-diy.org
> http://synth-diy.org/mailman/listinfo/synth-diy