Re: SBC-V2 IC Capacitors

[Sergey <skis...@gmail.com>]

I haven't seen 0.1 uF polarized capacitors in years...
If you indeed have them, you can use instead of the recommended
(ceramic) decoupling capacitors. These capacitors are simply connected
between the power supply rails GND (ground) and VCC (+5V), so the
negative lead of the capacitor should go to the ground, and the
positive to the 5V.

I personally recommend getting some 0.1uF ceramic capacitors. They are
not expensive, and used a lot as decoupling capacitors in N8VEM
designs or any other circuits with logic ICs. If you get a bag (100
pieces), the price goes down significantly.

Nowadays ceramic capacitors with higher capacitance (1 uF, 4.7 uF, 10
uF) are cheaply available, and they have many advantages over
electrolytic ones. They are smaller, they are not polarized, they
don't deteriorate with the time, they have more consistent performance
through a range of temperatures, their tolerance is usually better.

Thanks,
Sergey

On Sep 20, 4:37 am, LucasFraser <lucas...@westnet.com.au> wrote:
> I was just wondering whether i could use polarized capacitors in place of
> the capacitors next to all of the ic's... they are the ones labeled C2 on
> the parts list. Jameco part number: 25523. It was just that i had a heap of
> polarized ones lying around (they have 135(i believe this is 0.1uf) and a
> polarization mark on them). I'm guessing i will need the un-polarized ones
> from Jameco, but if i can use the ones i have, which way should i put them?
>
> Cheers