[Coco] Grant Searles SBC
Bill Nobel
b_nobel at hotmail.com
Wed May 6 22:27:42 EDT 2015
I am using tantalums on the charge pumps. and electrolytics currently for the decouplers. i can change the decouplers to tantalums as I have enough in stock. I have a bunch of ceramics coming for the decouplers, as I had the same thought for that reason.
Bill Nobel
> On May 6, 2015, at 8:15 PM, Zippster <zippster278 at gmail.com> wrote:
>
> I would normally go with .1uF ceramics, 1 per IC, perhaps 2 on the CPU.
> 1uF or slightly larger decoupling on the MAX232.
>
> Are you using tantalum caps for the charge pumps on the MAX232?
> Some versions can use ceramics as well.
>
> - Ed
>
>
>> On May 6, 2015, at 9:03 PM, Bill Nobel <b_nobel at hotmail.com> wrote:
>>
>> Yes I do. I am use 1uf caps right now, should I use maybe .1uf instead?
>>
>> Bill Nobel
>>
>>> On May 6, 2015, at 8:00 PM, Zippster <zippster278 at gmail.com> wrote:
>>>
>>> I would think you would be ok as far as bleed over, although you could try separating them a bit.
>>> Breadboarding always makes me wonder if I’m getting reliable contact with everything.
>>>
>>> Do you have decoupling caps on all the chips, including the MAX232?
>>>
>>> - Ed
>>>
>
>
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