Someone told me how to remove the layers from the heatsink and now I can do a full ground plane. I also made a 3d rendering of the board so I have an idea on how it will look like. Pretty neat!
I will probably get some tantalum capacitors on the ADJ and output but for the test it's nice.
I will probably get some tantalum capacitors on the ADJ and output but for the test it's nice.
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It is advisable to drill holes on the pcb, near the periphery of the heatsink.
Gajanan Phadte
I don't understand. You mean the securing holes? I guess that at the board's size that wouldn't matter as it's pretty stiff and the weight on it is not that much but I guess I could try to fit an extra one near the heatsink somewhere.
A few comments:
- Think in terms of power planes. There's no reason your positive power traces should be so much smaller than the ground traces.
- There's an optimal way to connect r1 and r2 for optimal performance: r1 should be connected as close as possible to the output pin of the reg, not sharing the output track (or as little as possible) and the ground side of r2/c5 should not be tied to the power groundplane but by a dedicated track directly to the gnd ouput terminal.
- Think in terms of power planes. There's no reason your positive power traces should be so much smaller than the ground traces.
- There's an optimal way to connect r1 and r2 for optimal performance: r1 should be connected as close as possible to the output pin of the reg, not sharing the output track (or as little as possible) and the ground side of r2/c5 should not be tied to the power groundplane but by a dedicated track directly to the gnd ouput terminal.
A few comments:
- Think in terms of power planes. There's no reason your positive power traces should be so much smaller than the ground traces.
- There's an optimal way to connect r1 and r2 for optimal performance: r1 should be connected as close as possible to the output pin of the reg, not sharing the output track (or as little as possible) and the ground side of r2/c5 should not be tied to the power groundplane but by a dedicated track directly to the gnd ouput terminal.
You mean like this?
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Hi Trileru,
I found from web also regulated with LT1083.
What is your main reason use LM338 ?
Hi,
Well, it's cheap and I have a dozen of so regulators already
That's why I mentioned that it can also be used with LT1084 etc. Just be sure to use the appropriate capacitors as per application.
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