Build Your Own Arcade Controls Forum
Main => Main Forum => Topic started by: knave on April 14, 2007, 01:17:59 am
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How different are the power supplies from various cabs. Could I put my old Galaxian PCB into a modern (jamma) cab? Would the PS work?
Do monitors each take the same basic power?
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How different are the power supplies from various cabs. Could I put my old Galaxian PCB into a modern (jamma) cab? Would the PS work?
It depends on what your boardset requires for voltages. Some older pre-JAMMA boardsets had weird voltage requirements. A typical modern switching power supply such as you'll find in a JAMMA cabinet only supplies +12VDC, +5VDC, and -5VDC.
Do monitors each take the same basic power?
Most monitors require 120VAC. There are some exceptions, notably the Nintendo/Sanyo or Nintendo/Sharp monitors, which require 100VAC. Nintendo cabinets in countries such as the U.S. which have the 120 VAC @ 60 HZ power standard, include a 120VAC ---> 100VAC step-down transformer (which also functions as an isolation transformer).
Most older arcade monitors require an isolation transformer.
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Galaxian and Pacman/MsPacman are an exception. They have a power supply section built into the gameboard and receive AC power from a transformer in the bottom of the cabinet.
If you wanted to use the Galaxian board in a Jamma cabinet you need two things: a Galaxian to Jamma adapter board and your gameboard must be modified/converted to use DC power.