Everyone wants to put a PS2 in
their car, so I researched the WEB, and found out how to do it, with
pics and digrams.
C1
= 0.1mF
capacitor
(noise filteing)
C2 = 4700mF capacitor
D1-4 = 1N4002 for power direction
(4)
U1 = LM1084 12V, 5A, Low
dropout, TO220 package
The voltage regulator was chosen
because
it satisfies a couple requirements. The PS2 requires about 3A of
current, much more than a standard LM7812(at 1.5A peak) can
handle.
The low dropout feature is really nice since the car's battery varies
from
12-14.7V. The TO220 package is smaller than using an equivalent
TO-3
part.
First, here is the Schematic This circut is placed on the PS2
power supply board. The B+ and GND wires go to an external
plug. You can wire the Male end to a Cig. Ligher plug, or
directly to a switched power source. The female and goes to
the circuit, of course.
Detailed instructions:
Take the PS2 apart, the screws are
under the rubber pads and such. You can figure that much out.
Take out the power regulation
board. This is held in by four screws. There is also a 120V
power connector for the main power button. Be careful with, and
when handeling the fan,
the wires are very thin (~30AWG each). The modification is to
this
power regulation board itself. The regulator, a LM1084, is of
TO220 package,
and a heatsink is added.
The DIODES keep the original voltages (when plugged into a wall outlet)
from going back through your new car 12V regulator, so you have a
completely portable unit.
Diodes were also added, replacing
two
of the legs of the power connector of the power board. The
stripe of the diodes faces UP to the connector, not DOWN towards the
board. The diodes from the LM package go to the TOP of the diodes
on the connector, NOT below the diodes
Here are some Finished product shots. NOT seen at the web site I
provided on ASOG.
Here is the connector OUTSIDE the PS2.
You can plug that into the male connector, then into the Cig. lighter,
or directly to a swicthed 12V supply.
I hope this helped. There is a place that sells direct PS2 12V
regulated power boards, specifically designed for use in cars with 24V
and 12V systems. They are basically the SAME type of corcuit
here, but it completely replaces the PS2's power board with
theirs. You can fabricate your own with THESE parts!
I will add to this page as I find more options for 12V use!
