Power supply requirements
The PC–600 is designed to operate from a 5 VDC supply,
connected at J9. The typical current requirements for the PC–600 is listed
in the
Technical data
appendix. If you are using the PC/104 interfaces,
you may also r12 VDC. Make sure that you utilize both +5 VDC
conductors and both ground conductors.
You should also consider other factors such as the power cable conductor
gauge, number and length of conductors, mating connectors, and the
power supply to external devices such as hard drives, floppy drives,
displays, mouse, and keyboard.
It is important that a quality power supply be used with the PC–600 that
has sufficient current capacity, line and load regulation, hold up time,
current limiting, and minimum ripple.
The power supply for the PC–600 must meet the startup risetime
requirements specified in the ATX Power Design Guide, version 1.1,
section 3.3.5. This assures that all the circuitry on the PC–600 sequences
properly and avoids system lockup.
Also, select a power supply that discharges quickly. If large power supply
output capacitors are used, powering the system down and then up may
lock up the PC–600. If the power supply does not drain below 0.7V, the
CMOS components on the PC–600 will act like diodes and forward bias,
potentially damaging the PC–600 circuitry.
The proper selection of a quality power supply ensures reliability and
proper functioning of the PC–600.
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