RE: Voltwatch, you all use 'em?  
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All Forums >> RC Airplanes >> Beginners >> RE: Voltwatch, you all use 'em?
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RE: Voltwatch, you all use 'em? - 7/8/2008 3:06:00 PM   
Missileman



Posts: 2677
Joined: 2/14/2006
From: Algonac, MI, USA
Status: offline
quote:

ORIGINAL: Matt14x

Whai value [ohms] resistor do I need to use a six-volt battery on a volt watch 1 ? All my birds have voltwatch ones inside the canopy.

I wouldn't recommend it. Even if you get the voltwatch to work you will never be sure of accuracy and a resister will cause more current draw running your battery down even quicker.
"IF" you are using 6 volt batteries as a safety measure against losing a cell or dropping below cuttoff on a 2.4 Ghz system you may consider a voltage regulator. There are several on the market that will reduce the 6V to around 5V. You will still have the peace of mind from the 6V system and your voltwatch will then work.

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(in reply to Matt14x)
       Post #: 151

RE: Voltwatch, you all use 'em? - 7/8/2008 3:08:20 PM   
testfly



Posts: 67
Joined: 4/1/2002
From: Anna Maria, FL, USA
Status: offline 		Good question Matt, I want to know too. I have same issue.

(in reply to Matt14x)
       Post #: 152

RE: Voltwatch, you all use 'em? - 7/8/2008 4:14:32 PM   
Matt14x


 

Posts: 222
Joined: 10/17/2004
From: Hamond, IN, USA
Status: online 		I could put a pot in series with a voltWatch one an find the ohmic value I need, but I thought someone would have done that .

My question is still new. May-be somebody has.

(in reply to testfly)
       Post #: 153

RE: Voltwatch, you all use 'em? - 7/8/2008 7:51:49 PM   
AstroDad


 

Posts: 104
Joined: 5/26/2008
From: , PA, USA
Status: offline 		I just got my first voltwatch2. I had no idea it was so small. I should have no problem fitting it on board.

(in reply to Matt14x)
       Post #: 154

RE: Voltwatch, you all use 'em? - 7/8/2008 8:59:58 PM   
Rodney



Posts: 4731
Joined: 12/8/2001
From: FL
Status: offline 		You can not successfully just put a resistor in series with the voltwatch to raise the voltage level to be sensed and still expect any accuracy. They do not work that way, it takes a change in the internal resistor lattice.

(in reply to AstroDad)
       Post #: 155

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