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???
01/12/06 13:31
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 		 #107132 - 12 */~2 ~ 17 so I doubt you see 19V
Responding to: ???'s previous message
I used a bridge rectifier with 5000uFd filter capacitor to rectify 12 VAC. The filtered o/p shows 19 VDC. Can any one tell me why?

12 * root 2 ~ 17 so I doubt you see 19V

Also, kindly suggest me on how to choose the value of a filter capacitor in a rectifier circuit to manage ripples.
The more the merrier, however why use more than needed, the voltage regulator you (I hope) follow the filter cap with will cut the ripple even more. My rule of thumb is a microfarad per milliamp. This does very much depend on the Vin-Vout differential on your voltage regulator.

Erik

List of 56 messages in thread
TopicAuthorDate
Circuit Analysis            01/01/70 00:00      
   Analysis            01/01/70 00:00      
   Dangerous!            01/01/70 00:00      
      bungling amateurs "bragging" on the web            01/01/70 00:00      
         Not electronic, but an amusing example            01/01/70 00:00      
            OLD idea ?            01/01/70 00:00      
               New and improved            01/01/70 00:00      
                  Safety first            01/01/70 00:00      
         I think you meant...            01/01/70 00:00      
         deja vu all over again!            01/01/70 00:00      
      resistor replaced by capacitor            01/01/70 00:00      
         Phase shift            01/01/70 00:00      
         dissapation            01/01/70 00:00      
            Dissipation            01/01/70 00:00      
               It's a real world after all            01/01/70 00:00      
                  What ? Make mistakes ?            01/01/70 00:00      
                     are you sure            01/01/70 00:00      
                     or ..            01/01/70 00:00      
            Non ideal cap performance            01/01/70 00:00      
   Diodes!            01/01/70 00:00      
   Current Limiting Capacitor            01/01/70 00:00      
      Capacitor Filters            01/01/70 00:00      
         Some basic theory needed            01/01/70 00:00      
         12 */~2 ~ 17 so I doubt you see 19V            01/01/70 00:00      
         Output voltage            01/01/70 00:00      
            Regulation            01/01/70 00:00      
            current flow            01/01/70 00:00      
               What current?            01/01/70 00:00      
                  What iam trying to know is            01/01/70 00:00      
                     inrush current            01/01/70 00:00      
                     Naiive analysis            01/01/70 00:00      
                        Laplace Transformation            01/01/70 00:00      
                           Could be worse....            01/01/70 00:00      
                              Me too!            01/01/70 00:00      
                                 Minds are failing            01/01/70 00:00      
                     DC component            01/01/70 00:00      
                        Suresh, have as look            01/01/70 00:00      
                           analog and digital ground            01/01/70 00:00      
                              discussed ad nauseam do a search            01/01/70 00:00      
                              Use a splitted ground plane            01/01/70 00:00      
                                 did i got it right            01/01/70 00:00      
                                    Also datasheet of ADUC can help you            01/01/70 00:00      
                                       Placing Vias            01/01/70 00:00      
                                          Maybe..            01/01/70 00:00      
                                             Copper fills            01/01/70 00:00      
                                          I do not know about 2 layers            01/01/70 00:00      
                                        Auto route            01/01/70 00:00      
                                          Solid ground plane has to be solid!            01/01/70 00:00      
                                             Thank you Kai            01/01/70 00:00      
                                                circuit for a despensing unit            01/01/70 00:00      
                                                   ICM7555 + 2M2 + 6ยต8            01/01/70 00:00      
                                                      why a totally unrelated post in the midd            01/01/70 00:00      
                              Separate signal traces.            01/01/70 00:00      
                                 What has God to do with this??            01/01/70 00:00      
               DC DC            01/01/70 00:00      
               DC DC            01/01/70 00:00      

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