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What
A simple adjustable DC power supply: hardware
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Notes & stuff
Design constraints
Outputs:
2 adjustable outputs
1 fixed output
Voltage:
Current:
Indication:
voltage (for adjustable outputs only)
current (for adjustable outputs only)
current limiting active (constant voltage / constant current) (all outputs) (red LED)
Options:
combine to 0-60V / 2A (series)
combine to 0-30V / 4A (parallel)
link voltages (can be used for parallel mode or symmetric output)
What happens when the output voltage is set to 3.3 V, and I hook it up to a 12 V battery?
Which is better:
The PSU pulls the voltage down to 3.3 V (or as close as possible until it hits the current limit)? or
The PSU supplies zero current, letting the voltage float up to 12 V?