PSU-11 Dual-Rail Power Supply Unit

There is often the need to generate a +ve/-ve power supply from a single power supply input such as a battery or a plug-pack. The PSU-11 will generate a -12V rail from a +12VDC input supply.

-12V Rail (maximum)
DC Input (minimum)
PSU-11A
1.25A
12VDC @ 1.5A
PSU-11B
2.5A
12VDC @ 3A

The figures quoted for the -12V rail are the maximum attainable and require a 12VDC input supply with a minimum rating as shown. The +12V rail will be equivalent to :-

'rating of input supply' - 'load drawn from -12V rail'

For example, the PSU-11b running at maximum -12V loading with a 5A supply will deliver approximately +12V @ 2.5A and -12V @ 2.5A. If you only draw, for example, 1A off the -12V rail then you an draw up to 4A from the +12V rail.

This small unit is suitable for mounting directly inside the system to be powered but can also be mounted in a small enclosure for use as a small stand-alone supply.

Dimensions
85mm x 48mm
Bill of Materials
Construction
Guide

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Copyright 2000. All rights reserved.     Revised: July 10, 2018