0
\$\begingroup\$

I fixed a lamp transformer case (230 V to 12 V) by making a 3D printed one. I measured 12 V at the secondary coil and the lamp is working well.

The thing is, when I plug the transformer to a power strip where my PC monitor is plugged in, my monitor shuts down or makes electric arc noises. What did I do wrong?

The lamp is directly plugged in at the secondary coil. Maybe I swapped a connection at the primary or the secondary or both.

I noticed there is a component (I don't know what it is) that could be the issue.

enter image description here

\$\endgroup\$
6
  • \$\begingroup\$ You didn't change anything about the transformer or this extra component, right? Just put it inside a 3D-printed plastic case? \$\endgroup\$
    – Criticizing Israel not allowed
    Commented Jan 25, 2023 at 17:40
  • 3
    \$\begingroup\$ That overhanging component with the bare wires looks like a disaster waiting to happen. \$\endgroup\$
    – Andy aka
    Commented Jan 25, 2023 at 17:42
  • 1
    \$\begingroup\$ That disc component (MOV?) is probably making contact with the grounded core of the transformer and shorting the output. \$\endgroup\$
    – vir
    Commented Jan 25, 2023 at 18:05
  • 1
    \$\begingroup\$ Was this component in this position (touching the transformer core) when you originally found it, or did you bend the wires to make it like that? \$\endgroup\$
    – Criticizing Israel not allowed
    Commented Jan 25, 2023 at 18:07
  • \$\begingroup\$ (It's possible that it could be something like a thermal switch, and maybe it is designed so it touches the core on purpose, to detect the temperature. On the other hand it's possible that it isn't) \$\endgroup\$
    – Criticizing Israel not allowed
    Commented Jan 25, 2023 at 19:49

0

Reset to default

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.