Yesterday, 12:11 PM
That should work. If you have a power bank that can supply 3.6A that still gives you headroom in your current setup. If you sum together your currents, you end up with 1250mA + 450mA = 1700mA = 1.7A which is about half of what such a power bank can supply.
In general, for any power supply, voltage should always match, but available current can be higher.
How much current is actually drawn is dictated by the circuit (by your modular system in that case). So if all your modules "demand" 1.7A, then a power supply capable of delivering that, will deliver it.
Imagine you have the biggest power supply in the world that can supply 1 million amps! You could still hook up an LED to it and draw only 10mA. That's fine. Just don't short it, that will be a big boom. But you could also build a space ship out of Eurorack modules and draw 1 million amps. Let us know if you go ahead and do that.
In general, for any power supply, voltage should always match, but available current can be higher.
How much current is actually drawn is dictated by the circuit (by your modular system in that case). So if all your modules "demand" 1.7A, then a power supply capable of delivering that, will deliver it.
Imagine you have the biggest power supply in the world that can supply 1 million amps! You could still hook up an LED to it and draw only 10mA. That's fine. Just don't short it, that will be a big boom. But you could also build a space ship out of Eurorack modules and draw 1 million amps. Let us know if you go ahead and do that.