Difference between revisions of "LPU"
| Line 12: | Line 12: | ||
Result of the discussion on the HPSDR mailing-list (27th Ocotber 2008): | 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. | ||
| + | |||
| + | [[Image:Table1.png]] | ||
| + | |||
| + | '''3 Electrical''' | ||
| + | |||
| + | 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''' | ||
| + | |||
| + | 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 | ||
| + | |||
[[Image:LPU.png]] | [[Image:LPU.png]] | ||
Revision as of 18:20, 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.
3 Electrical
The LPU accepts a 12VDC regulated input and produced the following outputs:
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
