Quote:
Originally Posted by G6Tanuki
When building 'beefy' low-voltage power supplies it's worth designing to have a 4-terminal output; that is, two big terminals for the actual power and two smaller terminals for 'sense' - that way you can compensate for the voltage-drop in the cables between the PSU and the device it's powering.
[When you're throwing tens of amps around, 0.1 Ohms of connecting-cable resistance becomes a big deal: your 'linear' can suddenly become a lot-less-linear if its supply-voltage sags on peaks]
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If you include remote voltage sense, include a limit on how much the voltage can be increased if one of the sense lines is open circuit. Probably also worth putting overvoltage crowbar circuit on the target device.
Also watch out for ceramic and tantalum capacitors used for power decoupling when you have a beefy power supply. If a device might be powered while unattended take extra care, maybe a fusible link to the decoupling caps.