MC14553 counter problem

Archiver

It is likely that you are experiencing a voltage surge when
connecting and or disconnecting your supply. Try adding a resistor
in series with your power supply and a decoupling cap across the IC's
power and ground. Try 10 - 100 ohms. BCS

--- In basicstamps@egroups.com, "Mohamed REFKY" <refky@h...> wrote:
> Hello,
> I have built a counter circuit using MC14553 (3-digit BCD counter)
with 9v
> NI-CD rechargeable battery to retain count in the event of power
failure.The
> problem is that some times the counter is reset with disconnecting
or
> reconnecting the main power.Any help would be appreciated.
>
> Thank You
> Mohamed Refky
>
>
______________________________________________________________________
___
> Get Your Private, Free E-mail from MSN Hotmail at
http://www.hotmail.com.
>
> Share information about yourself, create your own public profile at
> http://profiles.msn.com.

Archiver

Hello,
I have built a counter circuit using MC14553 (3-digit BCD counter) with 9v
NI-CD rechargeable battery to retain count in the event of power failure.The
problem is that some times the counter is reset with disconnecting or
reconnecting the main power.Any help would be appreciated.

Thank You
Mohamed Refky

_________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.

Share information about yourself, create your own public profile at
http://profiles.msn.com.