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Is there a mistake here?


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markcars 
Silver - Posts: 662
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Joined: December 11, 2002
Location: New York, United States
Posted: March 17, 2004 at 9:52 PM / IP Logged  
Is the diode polarity reversed/wrong in this?
I bought 2 of these about a month ago but think the drawing has a mistake. Looks like the sensor has -ve triggers but diodes are facing the wrong way.
Am I right or the drawing is right?
Is there a mistake here? -- posted image.
Teamrf 
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Posted: March 17, 2004 at 10:05 PM / IP Logged  
I think that diagram is right...that diode will only allow that current from the shock sensor to go out so it won't come back and trigger that shock sensor causing false alarms.
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markcars 
Silver - Posts: 662
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Location: New York, United States
Posted: March 17, 2004 at 10:18 PM / IP Logged  
Teamrf, did you check the trigger? It is -ve trigger, not +ve trigger. So the "current" that you are talking about really does not go from the sensor out, but its a -ve. If it was +ve then I think the diagram is right, but since the trigger is -ve I feel the diode must be reversed from what is shown in the diagram.
Can you ask someone to make sure?
Also can someone else check this too please?   I want to be 100 percent sure. Thanks.
auex 
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Joined: December 23, 2002
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Posted: March 17, 2004 at 10:35 PM / IP Logged  
Yes it is backwards. Line should be facing the shock sensor.
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markcars 
Silver - Posts: 662
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Joined: December 11, 2002
Location: New York, United States
Posted: March 18, 2004 at 4:19 AM / IP Logged  
Thanks a lot auex for confirming. After reading the first response, I was beginning to think my brains weren't functioning too well anymore. I can continue now.

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