[sdiy] 4046 VCO

[Pete Hartman]

If the whole circuit is running on 5V?  Probably.  it's designed for 15V,
and can work with 12V with a little bit of component modification.

I'd be willing to bet that the charge time on the cap at 5V would be a lot
faster than at 15V :-D

Pete

On Thu, Jul 5, 2018 at 6:58 PM, Tim Ressel <timr at circuitabbey.com> wrote:

> I'm running mine on 5 volts. also an issue?
>
>
>
> On 7/5/2018 4:47 PM, Jay Schwichtenberg wrote:
>
>> I'd say using a 5V part in a 15V circuit might be a problem.
>>
>> Also look on Muff's. There are particular brands of the 15V parts that
>> work
>> and others that don't work well.
>>
>> Jay S.
>>
>> -----Original Message-----
>> From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] On Behalf Of Tim
>> Ressel
>> Sent: Thursday, July 05, 2018 4:20 PM
>> To: SYNTH DIY
>> Subject: [sdiy] 4046 VCO
>>
>> Hiya,
>>
>> So I built up a Thomas Henry 4046 VCO and ran into an issue: the
>> frequency out is way too high, starting at 55KHz and going up to 175KHz.
>> I checked my schematic and it all looks good except for one thing; I am
>> using a 74HC4046 instead of a CD4046. Is that causing my problem?
>>
>>
> --
> --Tim Ressel
> Circuit Abbey
> timr at circuitabbey.com
>
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