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Unread 24-02-2015, 14:49
Unsung FIRST Hero
Al Skierkiewicz Al Skierkiewicz is offline
Broadcast Eng/Chief Robot Inspector
AKA: Big Al WFFA 2005
FRC #0111 (WildStang)
Team Role: Engineer
 
Join Date: Jun 2001
Rookie Year: 1996
Location: Wheeling, IL
Posts: 10,795
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Re: possibility to use charger and battery at the same time

Guys,
Most smart chargers use pulse charging. While the average voltage read by most multimeters will show approx 14 volts, the peak is much higher than that. As I remember, the KOP chargers peaked at something greater than 15 volts. Do not run chargers and robot electronics at the same time. The electronics in cars are designed for all kinds of voltage swings. I remember reading an article that suggested, power supply could be anywhere between 5 volts and 19 volts with a lot of noise on the line. The charge current in an automobile is also generated by a polyphase alternator and the peaks frequency varies with engine speed.
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Good Luck All. Learn something new, everyday!
Al
WB9UVJ
www.wildstang.org
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Storming the Tower since 1996.