I've never used a voltage regulator before and am somewhat new to circuits.
I'm curious about an LM78xx voltage regulator, if you connect the input and ground pins to the voltage source, without connecting the output pin will the regulator heat up?
The reason I'm asking is I'm curious whether the ground pin is necessary on it if the circuit will be close (if the output pin was connected of course) with just the input and output voltage?
Also an unrelated question about wiring a switch. Do you usually wire it to the positive (red) wire or to the black wire and why if it will work both ways?
I'm curious about an LM78xx voltage regulator, if you connect the input and ground pins to the voltage source, without connecting the output pin will the regulator heat up?
The reason I'm asking is I'm curious whether the ground pin is necessary on it if the circuit will be close (if the output pin was connected of course) with just the input and output voltage?
Also an unrelated question about wiring a switch. Do you usually wire it to the positive (red) wire or to the black wire and why if it will work both ways?