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???
02/25/06 14:33
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 		 #110785 - Not enough
Responding to: ???'s previous message
Capacitor coupling is not enough, if you need precise periods. Have a look at figure 4 of this datasheet

http://www.fairchildsemi.com/ds/NE%2FNE555.pdf

Kai

List of 39 messages in thread
TopicAuthorDate
Pressing 555 trigger SW continuously.            01/01/70 00:00      
   Again            01/01/70 00:00      
   capacitor couple it.            01/01/70 00:00      
      Re: cap coupling            01/01/70 00:00      
         Look up the internal block diagram            01/01/70 00:00      
            Read the Data Sheet!!            01/01/70 00:00      
      got the o/p            01/01/70 00:00      
         Satisfaction            01/01/70 00:00      
            Thanku steve            01/01/70 00:00      
         Not enough            01/01/70 00:00      
            alternatives ?            01/01/70 00:00      
               Remedy            01/01/70 00:00      
                  remedy?            01/01/70 00:00      
                     Alternatives            01/01/70 00:00      
                  BC550 & diodes            01/01/70 00:00      
                     Try it by yourself, it's simple!            01/01/70 00:00      
                        analysis results            01/01/70 00:00      
                           Analysis            01/01/70 00:00      
                              Thank you            01/01/70 00:00      
                              after the set delay Time            01/01/70 00:00      
                                 Enhanced debouncing            01/01/70 00:00      
                                    What do you think about it, Suresh?            01/01/70 00:00      
   why the neqw thread            01/01/70 00:00      
      reply            01/01/70 00:00      
         Read the Data Sheet!!            01/01/70 00:00      
   kalpak dabir            01/01/70 00:00      
   Have you considered using a 74121?            01/01/70 00:00      
      74121 versus CMOS555            01/01/70 00:00      
      74121 fine for short period delays?            01/01/70 00:00      
         No debounce needed???            01/01/70 00:00      
            Schmitt trigger operation?            01/01/70 00:00      
               Transition times of input signal            01/01/70 00:00      
                  controlling noise related issues            01/01/70 00:00      
                     Schmitt-trigger operation            01/01/70 00:00      
                      CD 4541BC = Alternative for ICM 7555?            01/01/70 00:00      
                        Do you really need to build it?            01/01/70 00:00      
                           Yes.            01/01/70 00:00      
                              try try try again            01/01/70 00:00      
                                 a sign of confidence            01/01/70 00:00      

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