Hi there once again

Correct me if I'm wrong, but I though that the 78XX voltage
regulators can only take 3X the output voltage on their input,
so the maximum supply that a 7805 can have as its input
is 15V.

Let me know

Gavin
--------------------------
vulcan@ihug.co.nz
http://www.geocities.com/TheTropics/Cabana/2625
--------------------------

>sounds like a simple 78L05 with some good filtering (make SURE you use a
>diode to prevent the boat from sucking all the power from your pic when the
>engine starts)

>michael


>>Hi there
>>
>>I'm looking for a DC-DC converter that can
>>step 24V down to 5V. It's for a PIC I have
>>onboard a boat. It only needs to be able
>>to supply 5mA max and have as few
>>external components as possible.
>>I have a zener, but that's just using
>>too much batter power.
>>
>>I've been looking at the MAXIM IC's but I
>>can't find any that will do, although I'm
>>sure I've seen one before.
>>
>>Please suggest any that you may used
>>before.
>>
>>Regards
>>
>>Gavin