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crwdns2933797:0Thomas Widmaiercrwdnd2933797:0crwdne2933797:0
crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 Thomas Widmaier
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| + | [title] High voltage gap potential problem |
|---|---|
| + | [* black] The PCB is not conformally coated, so water splashing around the base can potentially enter and cause damage. |
| + | [* black] The design of the PCB is a bit unfortunate as the high voltage switching regulator is very close to the LDO and microcontroller. |
| + | [* red] Line input |
| + | [* orange] Switching regulator |
| + | [* light_blue] LDO and MCU |
| + | [* black] In the second image shown: Red circle: Isolation gap between 320VDC and 4.4VDC is about less than 1mm |
| + | [* red] Red arrow: Pulsed 320V (220VAC) switching regulator |
| + | [* light_blue] Blue arrow: 4.4V LDO supply voltage for MCU |
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