Hello all, This is my first post here
I have a project at the moment and everything is to work from a single 12V battery. Now I am using an Arduino which has its own 5V regulator. Since I intend to switch some ICs and a relay, I can't just power everything from this poor 5v regulator.
1. Can I for example have a transistor's base switch on using the output from the uC (Arduino), have the emitter connected to GND, and the collector-relay-coil take voltage directly from the battery?
2. Another similar scenario is to have two 5V regulators (1 on Arduino and 1 for some ICs) both of which taking power from 12V battery and have the Arduino "mix" its 5V with that of the ICs ?? For example the ICS are powered from a 2nd V regulator while they receive input pulses from the uC using the 1st V regulator...
Sorry if this is silly but I know that this might be fatal to some components in certain circumstances.
Thanks
X
I have a project at the moment and everything is to work from a single 12V battery. Now I am using an Arduino which has its own 5V regulator. Since I intend to switch some ICs and a relay, I can't just power everything from this poor 5v regulator.
1. Can I for example have a transistor's base switch on using the output from the uC (Arduino), have the emitter connected to GND, and the collector-relay-coil take voltage directly from the battery?
2. Another similar scenario is to have two 5V regulators (1 on Arduino and 1 for some ICs) both of which taking power from 12V battery and have the Arduino "mix" its 5V with that of the ICs ?? For example the ICS are powered from a 2nd V regulator while they receive input pulses from the uC using the 1st V regulator...
Sorry if this is silly but I know that this might be fatal to some components in certain circumstances.
Thanks
X