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Chico Magalhães
03/23/12 15:42
Modified:
  03/23/12 15:43
Read: 1050 times
Florianópolis
Brazil


 		 #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      Chico Magalhães      03/23/12 15:42      
   "a circuit I got in the internet..."      Andy Neil      03/24/12 00:44      
      Tests      Chico Magalhães      03/24/12 01:25      
         Then leave AC mains well alone!!        Andy Neil      03/24/12 05:11      
         then why did you put it together        Erik Malund      03/26/12 06:57      
            a recipe for disaster        Andy Neil      03/26/12 12:38      
               How safe is safe?      Justin Fontes      03/26/12 13:51      
                  HUMANLY safe      Erik Malund      03/26/12 13:57      
                     I would also add      Justin Fontes      03/26/12 14:21      
                        A good link to electrical safety      Justin Fontes      03/26/12 20:28      
   You dally with danger again!        Kai Klaas      03/24/12 06:58      
   the value of a human life ....      Erik Malund      03/26/12 13:02      
      An unsafe bodge for a basically unsuitable design!      Andy Neil      03/26/12 13:24      
   So this circuit cant work?...      Chico Magalhães      03/26/12 22:03      
      How much do you understand?      David Prentice      03/27/12 01:07      
      How do you know you know enough?      Per Westermark      03/27/12 01:16      
      already answered      Erik Malund      03/27/12 06:09      
      Capacitor power supplies...        Kai Klaas      03/27/12 17:03      
         the bane of the high voltage amateur      Erik Malund      03/28/12 07:03      
            Just 24V isn't enough      Per Westermark      03/28/12 07:53      
      You are contradicting yourself!      Andy Neil      03/28/12 14:11      
   RE: 555 Timer for AC        Hans Van Pelt      03/27/12 02:48      
      Triacs      Andy Neil      03/28/12 14:08      
   I'm giving up        Chico Magalhães      03/28/12 21:25      
   Re      Ramesh Rai      04/18/12 21:03      
      Don't hijack threads      Andy Neil      04/18/12 23:14      

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