3-Novemeber-07
HPSC104-SER Manual
Tri-M Engineering
Tel:
800.665.5600, 604.945.9565
1407 Kebet Way, Unit 100
Fax:
604.945.9566
Port Coquitlam, BC V3C 6L3
E-mail:
Canada
Web
site:
www.tri-m.com
7
CHAPTER 2: CONFIGURATION AND INSTALLATION
2.1 Introduction
This chapter describes the configuration and installation of the HPSC104-SER power supply. In
addition, section 2.2 provides a formula to calculate the ava5VDC. Figure 2-1 shows the
HPSC104-SER connectors, jumpers and other options.
Power Considerations.
The +5V switching regulator is rated at 25A maximum output, however the +5V output supplies power
to the +12, -5, and -12VDC regulators. To obtain the usable range of +5V output, “derate” according
to the use of +12, -5, and -12VDC. Use the following formulae to calculate the maximum usable
output.
Where:
I[-5] = -5VDC current load
I[-12] = -12VDC current load
I[12] = 12VDC current load
Assuming 90 percent converter efficiency (actual efficiency may vary).
9
.
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4
.
2
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12
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4
.
2
*
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12
[
]
5
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25
5
I
I
I
A
Voutput
Usable
+
−
+
−
−
=
+
