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21st February 2004, 03:51 AM
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#1 |
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diyAudio Member
Join Date: May 2003
Location: Toronto
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XO powersupply PCB board diagram
Here are the PCB board image of 317/431 power supply for XO. The images is ready for direct printout without the need of resizing. (The size of this board is 2.324 inches in length)
This board had not included the transformer, diode and first filter cap (470uf). I made the supply and the result is good. And would share this to those interest. |
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21st February 2004, 05:49 AM
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#2 |
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Electrons are yellow and more is better!
diyAudio Member
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If you could post the schematics it would be easier to review, also the pbc traces.
__________________
/Per-Anders (my first name) or P-A as my friends call me |
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21st February 2004, 12:12 PM
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#6 | |
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Banned
Join Date: Dec 2001
Location: Zamboanga, City of Flowers, Mindanao
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Another Error
Quote:
You missed the resistor between the collector and base of the transistor in the schematic. Something like 2k7 will do. Seems like it is in the layout as 3k??.  
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24th February 2004, 09:48 AM
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#8 |
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diyAudio Member
Join Date: Feb 2003
Location: Cordoba (SPAIN)
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another schematics and board for XO
LeoJar,
Some month ago, Fmax started a thread "More on clock power supply" More on Clock Power Supply There he shows a way to reduce the power supply noise to a Tent XO module usind a TL1763 LDO. I made a board of it using his spec. and comments. I have been using from then. But now I'm thinking on changing the design of this little board. I attach the schematics and the board in order to get some comments from all of you. Could you, please, say something about? This is the schematics and pcboard |
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24th February 2004, 09:58 AM
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#10 |
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diyAudio Member
Join Date: Feb 2003
Location: Cordoba (SPAIN)
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trafo for the supply
You can use it to supply an XO module using a pair of 9V bateries or an external transformer.
Actually I'm using one of the +8V connections inside my CD player. But I thinking to built a board for a trafo to supply, something like the ones you can see in the second page of the thread mentioned above: More on Clock Power Supply Guido's supply use a choke and some more filtering that the one from LCaudio (which seems to use an small ferrite, the one at one side of the V in). Can any of you give me some advice on what kind of choke should be better to use, where to set it and which values could I use? Thanks a lot. |
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