Waterproofing marine equipment - 08 - Transmitter Design Considerations

RE: Waterproofing marine equipment - 08 - Transmitter Design Considerations

hlipka — Sat, 24 May 2014 21:53:55 GMT

Keeping my finger crossed!

RE: Waterproofing marine equipment - 08 - Transmitter Design Considerations

mcb1 — Sat, 17 May 2014 11:15:36 GMT

Eduardo

While I was searching the datasheets for info to set the LED modes, I came across this, which sets out a few do's and don'ts for the transmitters.

http://www.ti.com/lit/an/slua635a/slua635a.pdf

It may help with the resonant capacitors.

Mark

RE: Waterproofing marine equipment - 08 - Transmitter Design Considerations

DAB — Tue, 29 Apr 2014 18:23:17 GMT

Have you verified that the frequency of water attenuation is not compromised by your installation?

The RF absorption bands for water can be a real problem, especially since it increases with depth.

DAB

RE: Waterproofing marine equipment - 08 - Transmitter Design Considerations

hlipka — Tue, 29 Apr 2014 18:13:47 GMT

Soldering the QFN chip will be fun [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-8824d7fe-ad1a-475a-8821-c0467ab16bab/contentimage_5F00_1.png:16:16] Apart from that the PCB design look fine. Although it looks much larger than the transmitter coil - is this due to scaling of the image?

RE: Waterproofing marine equipment - 08 - Transmitter Design Considerations

ipv1 — Tue, 29 Apr 2014 13:49:10 GMT

Kudos for the above. It did not occur to me to (re)design the charging circuit. I guess even if I had tried, I would have hit a brick wall since getting the PCB manufactured in India takes either lots of money or lots of time(pay for shorter lead times).

Good job.

Cheers