Pulling -12VDC from thin air (was Re: MicroVAX II)

From: John Allain <allain_at_panix.com>
Date: Fri Dec 13 18:13:01 2002

While we're on the subject,
can I ask if anyone knows what a
     Mmic
     29302BT
     9508
     PHIL 4D47US-2
might be?
I found several, for ?5V? to ?3.3V? converters,
and could use the pinouts, there are 5, from a TO
style case. The writing is exactly as above.

> There is another chip in the MAX232 series someplace
> that creates 12 V from 5V for serial uses other that
> what a 232 chip is normally used for. It just needs
> some capacitors for the charge pumps.

Equally interesting, if somebody finds it.

John A.
Received on Fri Dec 13 2002 - 18:13:01 GMT