Tagged Questions
1
vote
1answer
85 views
Electrical saftey of metal panel-mount DC jacks
Context:
I have a robotic arm with a series of servo motors, that together draw up to 3A from my bench supply (depending on the load on the servos). To make it easier to transport the robot around, ...
4
votes
1answer
584 views
AC->DC supply, how to deal with chassis ground being connected to digital ground?
I have an external triple-output AC-DC supply with the following output pinout:
On the power supply, "ground" (pin 2) is internally connected to the ground wire of the mains plug. I'll refer to it ...
0
votes
2answers
656 views
Connecting AC wires to a PCB
I am working on a project where I am using a microcontroller to control a 5V DC relay to control a mains device (an airconditioner).
In this circuit, I would need to connect the AC wires to my PCB ...
6
votes
7answers
941 views
Is it safe to use a DC power adapter that isn't UL Listed or CSA certified?
I picked up a 9V switching DC adapter from SparkFun a while back, but I've been hesitant to use it because it doesn't have any of the usual "safety" approvals that you normally see on power adapters ...
5
votes
4answers
3k views
DIY Beginner's DC Power Supply?
My school uses HY 3005D-3 but I want to do it myself to save on $. Before opening it, I ask for tips about: not-to-break-it, cheap DC supply and DIY-materials (not that I know them soon). So how to ...
