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Power supplies / JSR01/02 Current & Resistor Wattage
« on: April 27, 2010, 11:17:36 AM »
heaveno Per-Anders,
Thanks for sharing a lot of great info on these regulator designs. I have a few basic questions:
My application would be having around 250-300mA continuous current at +24V. In the tech specs of JSR03 you indicate that it's capable of only 100mA continuous and 150mA peak. I also looked at your SSR01 design, which is capable of 1A and see in its BOM that you're using 0.6W resistors.
The question is, would I be OK with using SMD 1/4W resistors, 1.75W D44H11, 0.5A LM317M for my rated current/voltage? I'd feed an external 30VDC with an AC adapter, and then pre-regulate with LM317M, etc...
Thanks!
Thanks for sharing a lot of great info on these regulator designs. I have a few basic questions:
My application would be having around 250-300mA continuous current at +24V. In the tech specs of JSR03 you indicate that it's capable of only 100mA continuous and 150mA peak. I also looked at your SSR01 design, which is capable of 1A and see in its BOM that you're using 0.6W resistors.
The question is, would I be OK with using SMD 1/4W resistors, 1.75W D44H11, 0.5A LM317M for my rated current/voltage? I'd feed an external 30VDC with an AC adapter, and then pre-regulate with LM317M, etc...
Thanks!