Hello,
I am a newbie when it comes to electronics, and I searched the internet for a circuit like that and couldn't find it. It might be because I lack the proper terminology or something.
I am trying to build a circuit that can be powered by either of the two +5V supplies (one being an USB connector, the second being a custom connector, also 5V). What would be the best way to implement something like that?
I figure it would be smart to implement some sort of signal to know which of the power supplies is currently supplying power to the circuit. However, I don't know how to pull that off, since logic gates need a power supply as well, so I can't just do A & ~B or something like that.
On an unrelated note, does anyone have any tips for assembling PCBs? I will need to solder an IC with fine pins, spacing 1mm from each other. Any advice soldering them manually?
Also, what is the best equipment for soldering PCBs? Soldering iron-wise, that is. I have heard that using eutectic alloys helps, how true is that?
Thanks in advance, hope I don't ask too many questions
Luke
I am a newbie when it comes to electronics, and I searched the internet for a circuit like that and couldn't find it. It might be because I lack the proper terminology or something.
I am trying to build a circuit that can be powered by either of the two +5V supplies (one being an USB connector, the second being a custom connector, also 5V). What would be the best way to implement something like that?
I figure it would be smart to implement some sort of signal to know which of the power supplies is currently supplying power to the circuit. However, I don't know how to pull that off, since logic gates need a power supply as well, so I can't just do A & ~B or something like that.
On an unrelated note, does anyone have any tips for assembling PCBs? I will need to solder an IC with fine pins, spacing 1mm from each other. Any advice soldering them manually?
Also, what is the best equipment for soldering PCBs? Soldering iron-wise, that is. I have heard that using eutectic alloys helps, how true is that?
Thanks in advance, hope I don't ask too many questions
Luke