Thread: Motors generating power
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Unread 24-06-2002, 00:38
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#0047 (ChiefDelphi)
  
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More like variable resistors
Posted by Ed Sparks at 2/13/2001 4:59 PM EST


Engineer on team #34, The Rockets, from Bob Jones High / New Century High and DaimlerChrysler.


In Reply to: Transorbs = Fancy Zeners?
Posted by Joe Johnson on 2/13/2001 4:23 PM EST:



My belief is that these devices are more or less MOVs (Metal Oxize Variable Resistors). This type of device is a resistor that lowers it's resistance as the voltage across it's leads increases. At low voltages it is practically an open circuit, however, if a short high voltage spike wanders along, it lowers it's resistance and absorbs it's energy (converting this energy to heat). These things are in all of your better power strips to keep those nasty household spikes at bay. They are usually red in color and disk shaped (something like a ceramic capacitor).

The reason I jumped on this thread was that someone may try to use one of the kit diodes as a transorb and that could be an unfortunate experience.

Hope this helps.


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