0
\$\begingroup\$

Is this opening not a bad thing because dust can get in? I'm thinking about putting a piece of tape on it. picture of opening

\$\endgroup\$
  • \$\begingroup\$ But could those pins not be on top of the board? \$\endgroup\$ – MatMis Jun 24 '18 at 20:51
  • \$\begingroup\$ How much did you pay for it? Because if you triple that you'd get nice sealed pot. \$\endgroup\$ – Maple Jun 24 '18 at 20:51
  • \$\begingroup\$ No, because the coal strip is on the bottom. \$\endgroup\$ – Janka Jun 24 '18 at 20:52
2
\$\begingroup\$

I think it is to do with manufacturing process. Most low cost pots have a carbon track that has been deposited onto some kind of fibre board, which the wiper mechanism and cover attach onto. They are designed to be cheap and easy to put together. You can also get sealed pots, but they cost several times more:

10k standard pot

10k sealed pot

The gap is handy for squirting cleaning fluid into, though.

\$\endgroup\$
2
\$\begingroup\$

The more common technical reason is for cooling with restricted convection air flow.

Many slider substrates are simply metalized films with power ratings of only 0.1 to 0.2W and the plastic film is a thermal insulator so adding more restricted air flow when operating near rated power, will raise the plastic film temp and risk burnout or fusing the element.

\$\endgroup\$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.