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

[Tom Wiltshire]

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
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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
>