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???
11/02/04 05:06
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#80245 - RE: Kai can I use this or is there any
Responding to: ???'s previous message
Hi Kai,
The circuit that you have posted is really great and I want to first understand it completely before I use it.

The above circuit is very much simillar to precision rectifiers I have seen in "National" Application Notes but with some differences. I will be very greatfull If you can please tell me the significance of the components encircled red in the following figure. I have never seen these 33pF capacitors and those two diodes on inverting terminal.



Apart from the above stuff. In "National" Application notes They usually refer the resistor values as R & R/2 as shown in red in following figure. And in some app notes these values are 20K [R] and 10K [R/2]. But in your circuit you are using three different resitor values viz. 20K 22K & 11K. I couldn't understand the significance of using 20K why it is not 22K?



Kai, I am sure these differences are certainly for better performance Please tell me what is the advantage of using these things.

Thanks& Regards,
Prahlad Purohit

List of 127 messages in thread
TopicAuthorDate
WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
   RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
      RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
         RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
            RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
               RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
                  RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
                     RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
                        RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
                     RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
                        RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
                           RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
                              RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
                                 RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
         RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
            RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
         RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
            RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
         RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
            RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
               RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
                  RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
   RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
   Single Supply full wave rectifier.            01/01/70 00:00      
      RE: Single Supply full wave rectifier.            01/01/70 00:00      
         Kai can I use this or there\'s any better            01/01/70 00:00      
            RE: Kai can I use this or there\\\'s any            01/01/70 00:00      
               RE: Kai can I use this or is there any            01/01/70 00:00      
                  RE: Kai can I use this or is there any            01/01/70 00:00      
                     RE: Kai can I use this or is there any            01/01/70 00:00      
                        RE: Kai can I use this or is there any            01/01/70 00:00      
                     RE: Kai can I use this or is there any            01/01/70 00:00      
                        RE: Kai can I use this or is there any            01/01/70 00:00      
                           RE: Kai can I use this or is there any            01/01/70 00:00      
                        RE: Kai can I use this or is there any            01/01/70 00:00      
                           RE: Kai can I use this or is there any            01/01/70 00:00      
                  RE: Kai can I use this or is there any            01/01/70 00:00      
                     RE: Kai can I use this or is there any            01/01/70 00:00      
                        RE: Kai can I use this or is there any            01/01/70 00:00      
                           RE: Kai can I use this or is there any            01/01/70 00:00      
                     RE: Kai can I use this or is there any            01/01/70 00:00      
                        RE: Kai can I use this or is there any            01/01/70 00:00      
                        Clamp Diodes for Output.            01/01/70 00:00      
                           RE: Clamp Diodes for Output.            01/01/70 00:00      
                              RE: Clamp Diodes for Output.            01/01/70 00:00      
                                 RE: Clamp Diodes for Output.            01/01/70 00:00      
                                    RE: Clamp Diodes for Output.            01/01/70 00:00      
                                       RE: Clamp Diodes for Output.            01/01/70 00:00      
                                       RE: Clamp Diodes for Output.            01/01/70 00:00      
                                          RE: Clamp Diodes for Output.            01/01/70 00:00      
                                             RE: Clamp Diodes for Output.            01/01/70 00:00      
                                       RE: Clamp Diodes for Output.            01/01/70 00:00      
                                          RE: Clamp Diodes for Output.            01/01/70 00:00      
                           RE: Clamp Diodes for Output.            01/01/70 00:00      
                              RE: Clamp Diodes for Output.            01/01/70 00:00      
                                 RE: Clamp Diodes for Output.            01/01/70 00:00      
                                    RE: Clamp Diodes for Output.            01/01/70 00:00      
                                       RE: Clamp Diodes for Output.            01/01/70 00:00      
                                          RE: Clamp Diodes for Output.            01/01/70 00:00      
                                    RE: Clamp Diodes for Output.            01/01/70 00:00      
                              RE: Multiple ADCs            01/01/70 00:00      
                                 Hey, 8 bits            01/01/70 00:00      
                                    RE: Hey, 8 bits            01/01/70 00:00      
                                       RE: Hey, 8 bits            01/01/70 00:00      
                                          RE: Hey, 8 bits            01/01/70 00:00      
                                             RE: Hey, 8 bits            01/01/70 00:00      
                                 RE: Multiple ADCs            01/01/70 00:00      
                                    RE: Multiple ADCs            01/01/70 00:00      
                                       RE: Multiple ADCs            01/01/70 00:00      
            RE: Kai can I use this or there\\\\\\\\\\\\\\\'s a            01/01/70 00:00      
      RE: Single Supply full wave rectifier.            01/01/70 00:00      
         RE: Single Supply full wave rectifier.            01/01/70 00:00      
   RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
      RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
      RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
         RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
            RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
   RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
   RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
   Excellent Reading for ADC Grounding            01/01/70 00:00      
      RE: Excellent Reading for ADC Grounding            01/01/70 00:00      
         RE: Excellent Reading for ADC Grounding            01/01/70 00:00      
            RE: Excellent Reading for ADC Grounding            01/01/70 00:00      
   How good is this scheme?            01/01/70 00:00      
      RE: How good is this scheme?            01/01/70 00:00      
         RE: How good is this scheme?            01/01/70 00:00      
            RE: How good is this scheme?            01/01/70 00:00      
               RE: How good is this scheme?            01/01/70 00:00      
                  RE: How good is this scheme?            01/01/70 00:00      
                     RE: more            01/01/70 00:00      
                        RE: more            01/01/70 00:00      
                           RE: more            01/01/70 00:00      
                              RE: more            01/01/70 00:00      
                                 RE: more            01/01/70 00:00      
                                    RE: more            01/01/70 00:00      
                  RE: How good is this scheme?            01/01/70 00:00      
                     RE: How good is this scheme?            01/01/70 00:00      
                        RE: How good is this scheme?            01/01/70 00:00      
                           RE: How good is this scheme?            01/01/70 00:00      
                              RE: How good is this scheme?            01/01/70 00:00      
                                 RE: How good is this scheme?            01/01/70 00:00      
                                    RE: How good is this scheme?            01/01/70 00:00      
                                       RE: How good is this scheme?            01/01/70 00:00      
                                 RE: How good is this scheme?            01/01/70 00:00      
                                    RE: How good is this scheme?            01/01/70 00:00      
                     RE: How good is this scheme?            01/01/70 00:00      
                        RE: How good is this scheme?            01/01/70 00:00      
                           RE: How good is this scheme?            01/01/70 00:00      
                              RE: How good is this scheme?            01/01/70 00:00      
                           The perfect design..            01/01/70 00:00      
                              RE: The perfect design..            01/01/70 00:00      
                                 RE: The perfect design..            01/01/70 00:00      
                                    RE: The perfect design..            01/01/70 00:00      
                                 RE: The perfect design..            01/01/70 00:00      
                                    Correction            01/01/70 00:00      
                                    RE: The perfect design..            01/01/70 00:00      
                                       RE: The perfect design..            01/01/70 00:00      
                              RE: The perfect design..            01/01/70 00:00      
         RE: How good is this scheme?            01/01/70 00:00      
         RE: How good is this scheme?            01/01/70 00:00      
            RE: How good is this scheme?            01/01/70 00:00      
               ADC7135            01/01/70 00:00      
   Kai, please chekck your mailbox.            01/01/70 00:00      
   Reducing the loop seems no way to elim.            01/01/70 00:00      
      RE: Reducing the loop seems no way to el            01/01/70 00:00      
   ICL7135            01/01/70 00:00      
      RE: ICL7135            01/01/70 00:00      

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