Features. Over current and over heat protection. Switching frequency 300khz. Chip Efficiency is 92%. This UBEC utilises switching technology to gain a much higher efficiency than liniar BEC. Which means less heat and longer battery life. The UBEC is equiped with a noise reduction alloy housing to reduce noise even further. Incorrect polarity safety feature ensures the UBEC will not be destroyed should the battery be connected incorrectly.
Not* this is an original UBEC. There is now a cloned version on the market, it is slightly cheaper but reliability may not be as good, find it here:HKUBEC3A
Since I want to power a small PC (Beaglebone black) with this UBEC, I am looking for the most efficient solution for low currents (ca. 150 mA). Does any of you know how this product performs compared to the alternative "HobbyKing Micro UBEC 3A / 5v" (http://www.hobbyking.com/hobbyking/store/__15212__H obbyKing_Micro_UBEC_3A_5v.html) for low currents. The latter uses the MP2307 chip. Does anybody what chip the Turnigy uses? Thanks!
Stuart i'm using this on most of my EDF's from 3s up to 5s and everything has been going well for a few years now and never a problem,yes you will want to take the red wire out from your ESC from the servo looking wire if it already has a BEC installed but if it's an OPTO you should be fine,just google it if your not sure mate as there is some good info out there and on Youtube.
I was flying my supernova today when i lost all control and crashed, i was using this bec and it went out, my servos are 2 tower pro mg90s and they say they need 4.8-6.0 volts.
was that more they this bec can handle ?
I need to buy another bec and dont want to get one that will cause me to lose control.
BECs are rated by volts and amps. The output voltage is whatever the output regulator is set to. The amps it can supply is the real measure of the capacity of a BEC. This is why you see so many 5V/6V BECs that span such a wide range of amps.
Do you know that the BEC is what caused the loss of control on your plane? Other likely causes are a dead battery (the battery must supply more than the output voltage of your regulator, or it's being under-supplied), a damaged battery (damaged batteries may not be able to provide enough current to keep up with the current draw requirements of the BEC), a mechanically jammed servo or control rod that stalls a servo and over-draws current, a bad receiver, radio interference, etc. If in doubt, test your gear as thoroughly as you can. A range test is a great place to start. If in doubt about the current draw on your gear, get a watt meter. Hobby King sells several. I got a Turnigy watt meter that's been discontinued, but I still use it. You install it inline between your battery and the rest of your gear, or between your BEC and your receiver. Then move all your servos, try stalling them, etc. It'll tell you the max current draw, the max power dissipation, etc. You can use that to size your batteries, ESC, BEC, etc. so that you aren't near any capacity limits. They're handy tools.
the light on the ubec would not come on and the servos would not work,also the motor would not work.
the battery was good, ever thing was working grate then crash!!
i was using a spektrum ar400 full range receiver, i bought it because the one i had was a off brand that did not have the range this one has.
i have a amp meter from hk i will try it between the receiver and the ubec when my new one comes in.
Thank you for you help
Yeah, that sounds like a bad UBEC. If you still have it, take a look to see if any of the heat shrink shows signs of heat. Might be possible to trace down what component died. Just out of curiosity, have you tried plugging this into a battery since the crash? Just curious if it's a hard failure like a burned regulator, or if it's an intermittent failure. I haven't had one of these fail (yet), but I wonder if they're sensitive to temperature.
This ubec has been through about 4 crashes thats about how many of these planes i have built,but the ubec never came out of the plane when it crashed still looked like new.
maybe it jarred it and damaged it.
The specs say 5.5V to 23V and a 2s lipo is 7.4V and a 5s lipo is 18.5V ,so with that taken into consideration i'd say yes it should work fine.
I've been using these for a number of years now when i don't want to trust the UBEC in my ESC's and the piece of mind is worth the little they cost IMHO.
Just seen the specs also show 2s to 5s lipo but not sure if that was there when you first posted this question. :-)
Very tiny module. I was expecting a little bigger... It came in transparent shrink wrap.
The output wire has a JR battery terminal. The input terminal has no connectors attached, so you can attach the connect of your choice.
Actually weights 8gms
I am using 5 Futaba 3004 servs without any problems. IT barely gets warm.
Suggest to keep a min 10cm distance form the reciever to avoid interference.
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61 thumbs up!
I checked this UBEC on a spectrum analyser to see wether it put out lots of interference in the 35 MHz radio frequency band. There is some switching noise between 100 Khz and about 2 Mhz, which is to be expected as this is the main switching frequency and the harmonics of it. I was able to lower the noise by winding 2 extra turns of cable on the ferrite core. If you want it REALLY quiet, you can solder a small 4,7 uF Tantalum capacitor between the red and the black cable. Mine fits nicely inside the ferrite ring. But I guess these alterations reflect just my tendency to perfectionism. It would be interesting to do some comparative range testing with this UBEC vs. a receiver battery. Maybe when the wether gets warmer...
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27 thumbs up!
Very BAD PRODUCT.. The Cable is so Thin..!! i bought 1 of these and tested to my Turnigy Lipo 1300mah, than the Cable BURNING..!!
25 comments. Reply..
25 thumbs up!
Poor quality. Have after some tests sometimes no output voltage. Just one time is to mutch. Thank god, i don`t have crashed my full glass EP-warbird with this BEC. I took another BEC.
Dont agree that this is photographed and labeled, 5A UBEC but when you get it, the instructions state 3 amps. Labeling a device that says UBEC - 5A but not stating 5A amps for 10sec is not right. It's rating is 3 Amps Constant, so it sould be labeled as shuch. I purchaed 2 of these thinking that I got nice small UBEC running at 5 amnps.. Wrong!!!