Sunday, 29 September 2019

power supply - Switching a Large Current with a Tiny Switch


I have a SPDT switch that can switch .3A @ 5V. I would like to use it to switch 1A @ 9V which will then be fed into a 7805 linear regulator.


This is the design that I have come up with.


enter image description here


I have run some simulations on this circuit and it appears to work. Is there anything else I should do? Should I toss in a resistor somewhere?


I'm planning on using this switch. I don't have a particular MOSFET in mind, but it should be cheap and SMD.




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