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Attention: RC-CAM.com will be closing down August 2021.

The RC-Cam.com forum was the very first online community dedicated to the advancement of wireless video cameras on radio controlled (R/C) models. This is now called "FPV" (First Person View). We are proud of the contributions that our members have made to the FPV hobby.

We've seen significant changes over the last twenty years. Initially there were a lot of eager R/C hobbyist that built their own video systems. Allowing these creative individuals to share their work was the purpose of this site. Now the FPV market is flooded with low cost systems; Sadly DiY FPV video projects are now rarely discussed.

RC-CAM.com (main site and forum) will be closing down August 2021. This was announced several months ago (March 2021) to allow our members ample time to download any information that is important to them. After the site is shutdown the information will no longer be available here.

We appreciate every member's involvement with advancing the FPV hobby. It is indeed sad to say goodbye to all our online friends. Be safe and stay healthy.



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Hi friends. need to run two electronic devices that required to be powered by the same battery source but cant share the same negative pole. Any idea about how to isolate the negative pole from each other? or it is impossible and have no option other than using two different batteries?

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Thanks. So what I need to find are isolated dc-dc units? I think Recom and Tracoshould work as I need 7.2 V and 300 mah only and the devices will be flying onboard so reduced weigh is a must.

A couple of isolated dc-dc (one for each device) is all what I need?

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Only one VReg is needed. One device is powered directly by the battery. The other is powered by the isolated VReg that is connected to the same battery. The two devices will be isolated from each other.

It's rare to need to go to all this trouble. Why are you doing this?

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That is sometimes a sign of common mode noise that is coupled through the copper wiring. Using isolated power and physical separation of the two systems is one way to solve it. But if you haven't tried effective common mode power filtering then I'd suggest you do that first.

http://www.murata.com/products/emc/knowhow/pdf/26to30.pdf

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