July 27, 2009
about 6 years ago
I’ll be putting together my breadboard power supply kit tonight.
I get bypassing the PTC if I want to be able to supply more current (and I’ve got a TO-220 heat sink kit in the parts box, I’ll see if it fits), and doing something to avoid LED eye burnout :-)
The last time I remember looking at the LMx17 datasheet, I thought a 10uF bypass from the adjust pin to ground improved ripple rejection significantly. I don’t see anything like that on the schematic. Is that an old technique that isn’t necessary with modern LM317s, not done to keep cost and/or size down, or for some other reason?
No public wish lists :(
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