Premium Member Phil Rhodes Posted October 20, 2018 Premium Member Share Posted October 20, 2018 Hi folks Simple question. If I were to design a device that could at least optionally use 24V DC power, what sort of connector would we expect? There are already several things in use for that, from various Fischer and Lemo connectors on specialist pieces of equipment, through XLRs of various pinouts. I know that Cine Power International use a rotating, speakon-style connector for their large batteries, which are specified to about 30V. What's being used? What's out there? What's a good idea, and why? Thanks for any thoughts, P Link to comment Share on other sites More sharing options...
Premium Member David Mullen ASC Posted October 20, 2018 Premium Member Share Posted October 20, 2018 Maybe this? https://www.markertek.com/product/rd1-pwr10-18in/power-cable-12v-24v-dc-lemo-3b-8m-to-3b-8f-18-inch Link to comment Share on other sites More sharing options...
Premium Member Dom Jaeger Posted October 20, 2018 Premium Member Share Posted October 20, 2018 It probably depends on which section of the market you're aiming for, but in my neck of the woods (rental houses, Alexa Mini, Amira, Red, DXL etc) the standard 24V battery connector is still a 3 pin XLR, even for 26V NiCad block batteries or 28V NiMH supplies like an Anton Bauer VCLX. The other standard for 24V on-board accessories is a 3 pin Fischer 102 socket (sometimes known as an RS socket) as found on Arri cameras, DXL, breakout boxes etc. Link to comment Share on other sites More sharing options...
Akos Baranya Posted October 20, 2018 Share Posted October 20, 2018 The big question is the amperage, at low amperage, you could get away with a lot of stuff, but at higher amps it is more interesting. For instance, some XLR are rated as high as 16 A. Speakons are rated 30A or 40A. Link to comment Share on other sites More sharing options...
Mark Dunn Posted October 20, 2018 Share Posted October 20, 2018 Maybe this? https://www.markertek.com/product/rd1-pwr10-18in/power-cable-12v-24v-dc-lemo-3b-8m-to-3b-8f-18-inch We can't see that in the EU because they're not GDPR-compliant. Could you post a screenshot? Link to comment Share on other sites More sharing options...
Premium Member David Mullen ASC Posted October 20, 2018 Premium Member Share Posted October 20, 2018 Here: Link to comment Share on other sites More sharing options...
Premium Member Phil Rhodes Posted October 20, 2018 Author Premium Member Share Posted October 20, 2018 Four hundred dollars for a cable. I might go with the 3-pin XLR, it's a lighting application, even though I think the use of 3-pin XLR for non-audio applications is a bit dubious. P Link to comment Share on other sites More sharing options...
Akos Baranya Posted October 20, 2018 Share Posted October 20, 2018 Four hundred dollars for a cable. I might go with the 3-pin XLR, it's a lighting application, even though I think the use of 3-pin XLR for non-audio applications is a bit dubious. P Skypanels use them so you'd be in good company. Link to comment Share on other sites More sharing options...
Mark Dunn Posted October 20, 2018 Share Posted October 20, 2018 Four hundred dollars for a cable. I might go with the 3-pin XLR, it's a lighting application, even though I think the use of 3-pin XLR for non-audio applications is a bit dubious. P I did wonder if David was having a joke, that's got to be about 1¢ per electron. XLRs have been used for batteries for a very long time though. The low voltage directive starts at 75VDC, which surprised me. I'll test a 9V battery with my tongue but that's it. Link to comment Share on other sites More sharing options...
Premium Member Phil Rhodes Posted October 20, 2018 Author Premium Member Share Posted October 20, 2018 To be scrupulously fair, a real name-brand 8-pin Lemo 3B connector is about 75 quid. Link to comment Share on other sites More sharing options...
Premium Member Adrian Sierkowski Posted October 21, 2018 Premium Member Share Posted October 21, 2018 I'd recommend 3Pin XLR. Just easier, honestly and still a beefy cable. Link to comment Share on other sites More sharing options...
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