projects:nch8200hv:nch8200hv_troubleshoot

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projects:nch8200hv:nch8200hv_troubleshoot [2020/12/16 10:27]
admin created
projects:nch8200hv:nch8200hv_troubleshoot [2020/12/16 10:58] (current)
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 +====== Suppress/Eliminate the High Pitch Noise ======
 +
 +In certain circumstances, the module may generate a high pitch/frequency noise, audible to human ears. It can be suppressed, if not completely eliminated, by the following method.
 +
 +**Add an aluminum electrolytic capacitor of 4.7uF/200V to the ceramic capacitor in parallel.**
 +
 +{{:projects:nch8200hv:add_extra_cap.png?400|}}
 +
 +This will efficiently suppress the noise level.
 +
 +This method has also been used by Dalibor Farny in his Puri clock ([[https://www.daliborfarny.com/product/puri-nixie-clock/|Link]]) currently in mass production. 
 +{{:projects:nch8200hv:puri_added_an_extra_cap_to_nch8200hv_-01.jpg?800|}}
 +{{:projects:nch8200hv:puri_added_an_extra_cap_to_nch8200hv_-02.jpg?800|}}
  • projects/nch8200hv/nch8200hv_troubleshoot.1608132452.txt.gz
  • Last modified: 2020/12/16 10:27
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