Electronics > Beginners

LAB POWER SUPPLY

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glinjik:

--- Quote from: Neomys Sapiens on January 14, 2020, 10:55:40 pm ---
--- Quote from: rstofer on January 13, 2020, 08:51:18 pm ---
--- Quote from: rdl on January 13, 2020, 06:49:31 pm ---There's at least one commercial product that does this, but the voltages are selected in 1.5 volt increments to match batteries, so not as useful as it could be.

You could use a single LM317 and switch between various resistors electronically or with a mechanical switch.


edit: Found one

https://www.amazon.com/Philmore-Multi-Voltage-Regulated-Power-Supply/dp/B004M45MHQ

--- End quote ---


The voltage selections are not useful (other than maybe 12V):

--- Quote ---Multi-Voltage Output: 3 , 4.5, 6 , 7.5, 9 , 12 VD

--- End quote ---

--- End quote ---
Depends on the task at hand. When doing repairs, I would find those voltage selections very useful, as they correspond to widely used battery combinations.

--- End quote ---

Well looking like ill have 3.2-6.2+, 12v+-, 19v+ i think thats a good range and one spare transformer if i decide later to add another voltage range

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