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5v battery eliminator...

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Old 08-20-2004, 04:55 PM
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stevennh
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Default 5v battery eliminator...

Any suggestions on a switched mode battery eliminator for a 5v video system? I had an s-bec from firmtronics, but it stopped working today (for no good reason...). I generally run 8.4-9.6v and am looking for an efficient isolated switched power supply to give me 5v at 500ma or so.

Steve
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Old 08-20-2004, 09:24 PM
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Default RE: 5v battery eliminator...

I'm not sure if this will answer your question, but you can get a 5 volt regulator at Radio Shack for about $2.00
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Old 08-21-2004, 07:11 AM
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stevennh
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Default RE: 5v battery eliminator...

I think those are linear regulators. I really want the isolation and efficiency of a switched-mode converter. Thanks.

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Old 08-21-2004, 11:46 AM
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mr.rc-cam
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Default RE: 5v battery eliminator...

You might want to checkout the TI/PowerTrends switchers that Digi-Key stocks. They come in a variety of I/O voltages and current ratings. They also have friendly form factors.
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Old 08-23-2004, 12:00 PM
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Default RE: 5v battery eliminator...

You want a UBec available from Hobby-Lobby.
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Old 08-24-2004, 06:16 AM
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stevennh
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Default RE: 5v battery eliminator...

Thanks. I just ordered one. I tried using a linear regulator, but the noise from the pulses hitting the motor always gets through to the video signal. The s-bec worked for a while (firmtronics), hopefully the u-bec will last longer!

Steve
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Old 08-24-2004, 04:23 PM
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Default RE: 5v battery eliminator...

That's weird about the Sbec giving out... I use one on the servos of my helicopter, hope it doesn't give out while I'm in the air!

Bill
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Old 08-25-2004, 08:08 AM
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stevennh
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Default RE: 5v battery eliminator...

I should probalby contact them. It would probably be out of warrenty but it's worth asking. It just quit, very strange. Remember my problem with auto-iris? One of the surface mount caps on the camera came loose. I tacked in a replacement last night and solved the problem. Man those SMD parts are tough to work with without the right equipment!

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Old 08-25-2004, 09:51 AM
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Default RE: 5v battery eliminator...

Good catch on the iris problem, I'm glad it was just a matter of a loose cap.

I have the right equipment and it's STILL hard
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