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Lucas
Isolating main power traces on backside of the PCB
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Mar 20.2019, 09:37:52
I am currently making a build-in PSU for my own audio-effect-rack-thing.
The internal PSU consists of two print-transformers(THT), one for 6VAC and the second one for 9VAC. These are also pretty low power ones (max 1A on the output).
I want to put the PSU circuit on a perfboard, since this is a simple design. I am already familiar, that there needs to be a decent airgap between main-rails on the PCB. Therefore, I can remove all the unconnected dots, so there can't be a spark.
Now my concern is, when I put the psu circuit in the case, that the backside of the PCB (and therefore the mains(230V) power traces) are touching the case internally.
How can I safely prevent this from happening and is there a better way around ?
My thoughts:
The internal PSU consists of two print-transformers(THT), one for 6VAC and the second one for 9VAC. These are also pretty low power ones (max 1A on the output).
I want to put the PSU circuit on a perfboard, since this is a simple design. I am already familiar, that there needs to be a decent airgap between main-rails on the PCB. Therefore, I can remove all the unconnected dots, so there can't be a spark.
Now my concern is, when I put the psu circuit in the case, that the backside of the PCB (and therefore the mains(230V) power traces) are touching the case internally.
How can I safely prevent this from happening and is there a better way around ?
My thoughts:
- painting the backside with something
- putting a plastic sheet beneath it
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