Overvoltage protection
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Posts: 46,084
Hi all,
I'd like to install a simple overvoltage protection for my Stamp. I know the
7805 voltage regulator is very reliable, but everything may happen...
I tried to put a 5V6 zener diode on the power supply, just after a 100 mA
quick fuse. I mesured up to 7 volts accross the diode before the fuse goes
to the fuse's heaven...
I need something acting very fast, and around 5.5 volt.
Any idea would be welcome !
Best regards,
Philippe Derenne
I'd like to install a simple overvoltage protection for my Stamp. I know the
7805 voltage regulator is very reliable, but everything may happen...
I tried to put a 5V6 zener diode on the power supply, just after a 100 mA
quick fuse. I mesured up to 7 volts accross the diode before the fuse goes
to the fuse's heaven...
I need something acting very fast, and around 5.5 volt.
Any idea would be welcome !
Best regards,
Philippe Derenne
Comments
(Microchip,Seiko,etc)
ACJacques
Philippe Derenne wrote:
>
> Hi all,
>
> I'd like to install a simple overvoltage protection for my Stamp. I know the
> 7805 voltage regulator is very reliable, but everything may happen...
> I tried to put a 5V6 zener diode on the power supply, just after a 100 mA
> quick fuse. I mesured up to 7 volts accross the diode before the fuse goes
> to the fuse's heaven...
> I need something acting very fast, and around 5.5 volt.
> Any idea would be welcome !
>
> Best regards,
>
> Philippe Derenne
Someone (phillips) makes a series that will do this. They are made for cars,
and will kill the output under a lot of condictions. Can't remember the series.
On 27-Aug-00, A.C.Jacques wrote:
> You really don't need this , but you could use a voltage monitor IC.
> (Microchip,Seiko,etc)
> ACJacques
>
> Philippe Derenne wrote:
>>
>> Hi all,
>>
>> I'd like to install a simple overvoltage protection for my Stamp. I know the
>> 7805 voltage regulator is very reliable, but everything may happen...
>> I tried to put a 5V6 zener diode on the power supply, just after a 100 mA
>> quick fuse. I mesured up to 7 volts accross the diode before the fuse goes
>> to the fuse's heaven...
>> I need something acting very fast, and around 5.5 volt.
>> Any idea would be welcome !
>>
>> Best regards,
>>
>> Philippe Derenne
>
>
>
>
Regards
--
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