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03/23/12 21:42
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  03/23/12 21:43
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 		 #186837 - 555 Timer for AC
Hello...
I'm trying to make a timer for switching on and off a small microwave motor.
This motor will just rotate a mirrored globe (for parties) all night long, as the motor heats quite much I thought in build a simple timer just to make the motor have some time to cool down, these times are not critical, I thought in something like 1~3 minutes on and 30s~1 minute off... kind 70% duty.

I have adapted a circuit I got in the internet, built it but it is not working as I expected, the motor never turns off, can someone give a help?
Thanks.

Follows the exact schematic:


List of 26 messages in thread
TopicAuthorDate
555 Timer for AC            01/01/70 00:00      
   "a circuit I got in the internet..."            01/01/70 00:00      
      Tests            01/01/70 00:00      
         Then leave AC mains well alone!!            01/01/70 00:00      
         then why did you put it together            01/01/70 00:00      
            a recipe for disaster            01/01/70 00:00      
               How safe is safe?            01/01/70 00:00      
                  HUMANLY safe            01/01/70 00:00      
                     I would also add            01/01/70 00:00      
                        A good link to electrical safety            01/01/70 00:00      
   You dally with danger again!            01/01/70 00:00      
   the value of a human life ....            01/01/70 00:00      
      An unsafe bodge for a basically unsuitable design!            01/01/70 00:00      
   So this circuit cant work?...            01/01/70 00:00      
      How much do you understand?            01/01/70 00:00      
      How do you know you know enough?            01/01/70 00:00      
      already answered            01/01/70 00:00      
      Capacitor power supplies...            01/01/70 00:00      
         the bane of the high voltage amateur            01/01/70 00:00      
            Just 24V isn't enough            01/01/70 00:00      
      You are contradicting yourself!            01/01/70 00:00      
   RE: 555 Timer for AC            01/01/70 00:00      
      Triacs            01/01/70 00:00      
   I'm giving up            01/01/70 00:00      
   Re            01/01/70 00:00      
      Don't hijack threads            01/01/70 00:00      

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