Difference between revisions of "LPU"

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Result of the discussion on the HPSDR mailing-list (27th Ocotber 2008):
 
Result of the discussion on the HPSDR mailing-list (27th Ocotber 2008):
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 +
'''1 Physical'''
 +
 +
  The LPU (Linear Power Unit) is a self-contained power supply board for HPSDR. It is mounted onto a 20-pin ATX connector that mates with the connector on the Atlas board.
 +
 +
'''2 Requirements'''
 +
 +
HPSDR boards require power outlined in the following table.
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 +
[[Image:Table1.png]]
 +
 +
'''3 Electrical'''
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 +
The LPU accepts a 12VDC regulated input and produced the following outputs:
 +
 +
[[Image:Table2.png]]
 +
 +
The LPU does not produce -5V or any standby voltages. It ignores the ATX power-on signal and
 +
is always on. There is a jumper to shut off the -12V switching regulator when it is not needed in
 +
order to eliminate RF noise.
 +
 +
'''4 LPU Feature List'''
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Input power: 12.5V – 14.5V regulated DC input
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Outputs: +12V@2A, +5V@2A, +3.3V@2A (opt), -12V@100mA
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Poly fuse on each regulator input: +12, +5, +3.3V (opt), -12V regulators
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Plugs into Atlas backplane ATX connector
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Mounting holes allow direct mounting to Atlas backplane
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Strap disable for -12V to reduce noise
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Dual power-pole input connector
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Internal dual power-pole output connector for PA or accessories
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Estimated PCB size: (LxWxH): 119mm X 44mm X 40mm
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Estimated overall size: (LxWxH): 137mm X 54mmX 60mm
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[[Image:LPU.png]]
 
[[Image:LPU.png]]

Revision as of 19:20, 28 October 2008

Linear Power Unit (LPU) - HPSDR Simple Power Supply

Project Leader: Scotty WA2DFI

"LPU" is the project-name for a simple HPSDR power supply. Although power supplies are widely available, and a more complex power supply Demeter will be specifically designed for the HPSDR project. With tin approachin release of Mercury this is the last hardware part of a basic functional HPSDR transceiver.

Further information will be presented on this page when it becomes available.

73 Scotty WA2DFI

Result of the discussion on the HPSDR mailing-list (27th Ocotber 2008):

1 Physical

  The LPU (Linear Power Unit) is a self-contained power supply board for HPSDR. It is mounted onto a 20-pin ATX connector that mates with the connector on the Atlas board.

2 Requirements

HPSDR boards require power outlined in the following table.

Table1.png

3 Electrical

The LPU accepts a 12VDC regulated input and produced the following outputs:

Table2.png

The LPU does not produce -5V or any standby voltages. It ignores the ATX power-on signal and is always on. There is a jumper to shut off the -12V switching regulator when it is not needed in order to eliminate RF noise.

4 LPU Feature List

Input power: 12.5V – 14.5V regulated DC input Outputs: +12V@2A, +5V@2A, +3.3V@2A (opt), -12V@100mA Poly fuse on each regulator input: +12, +5, +3.3V (opt), -12V regulators Plugs into Atlas backplane ATX connector Mounting holes allow direct mounting to Atlas backplane Strap disable for -12V to reduce noise Dual power-pole input connector Internal dual power-pole output connector for PA or accessories Estimated PCB size: (LxWxH): 119mm X 44mm X 40mm Estimated overall size: (LxWxH): 137mm X 54mmX 60mm


LPU.png