Again measured using a Voltcraft 3000 at the 230V AC, so the actual figures are too high by 10-20% when using a direct 12V DC source. Since I am going to use a 24 V to 12 V DC/DC converter that will probably have the same sort of efficiency as the AC/DC converter that I am using now, I figure these measurements are good enough for me personally.
|Lowrance HDS-8 (backlight @ 6)||6.3W||6.3W|
|Simrad IS20 Wind wand||0.9W||7.2W|
|Airmar DST800 depth/speed/temp sensor||1.0W||8.3W|
|Lowrance EP-65R fluid level sensor||0.4W||8.7W|
|Navico NAIS-300 AIS-B (receive mode)||7.3W||16.0W|
|Simrad RC42 compass||0.9W||16.9W|
|Simrad IS20 Graphic display||0.8W||17.7W|
|Simrad IS20 Multi display||0.6W||18.3W|
|Simrad IS20 Wind display||1.0W||19.3W|
|Simrad AC42 course computer||2.5W||21.8W|
|Simrad AP24 auto pilot controller||0.8W||22.6W|
|Airmar P319 sonar (depth) sensor||1.4W||24.0W|
As always there are some small surprises here:
- The chartplotter only uses 25% of the power envelope
- NMEA2000 nodes seem to use at least 0.4W.
- The NAIS-300 uses more power than I'd thought it would. Being able to shut it down completely is something to be considered.
Note to self (and reader): this is on the benchtop, the following is still missing:
- RF300 rudder feedback (should be neglible)
- Hydraulic pump (e.g. using the autopilot as opposed to just having it in standby)
- VHF #1
- Simrad WR20 remote
- Broadband RADAR sensor
- Ethernet switch