[hpsdr] Part for the LPU

[Scott Cowling]

Hi Ed,

The BOM is on the support page:
http://openhpsdr.org/support.html

The 100uF, 10V caps are Kemet part number B45196H2107M409.

The DigiKey part number is 495-2224-2-ND and they are in stock.

The +5V rail maximum current is 2A or 15W regulator dissipation, 
whichever comes first. At 13.8V input and 2A output, regulator 
dissipation is 8.8W and resistor R6 dissipation is also 8.8W.

At this level, I would recommend some airflow over the heat sink.

Remember that LPU was designed as an interim step until Demeter is 
completed. It may not be beefy enough to power all future boards.

73,
Scotty WA2DFI




At 10:53 2009-08-17 -0400, you wrote:
>***** High Performance Software Defined Radio Discussion List *****
>
>Hi gang:
>Does anybody have a source and part number for the dni-100uf cap for 
>the LPU unit?
>I have chosen to put the 3.3  VDC section in so that it is there in 
>case someone decides to use this.
>
>In reading the LPU Errata #2 buy shorting out the f 2 what will the 
>+5volt rail max current be. I am sure that other boards will use +5VDC rail.
>Any other mods or inf I need for the LPU?
>
>Ed
>WA3BZT
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