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???
12/15/05 03:16
Modified:
  12/15/05 03:18

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#105258 - LM317
Responding to: ???'s previous message
You can use a LM317 as turned-on regulator, like it's shown in this example:





Values of resistors must be changed of course to provide 5V at output of LM317. You can also omit the 220nF capacitor from ADJ-pin to ground and the 10R resistor in series to collector of BC337.
If the BC337 is turned-off, then 5V will develop at output. If the BC337 is turned-on, on the other hand, then at output 1.25V is generated. This should not be harmful.

Kai

List of 23 messages in thread
TopicAuthorDate
Connecting to power            01/01/70 00:00      
   many possibilities if you switch before            01/01/70 00:00      
      do you mean 7805?            01/01/70 00:00      
         many            01/01/70 00:00      
         before or after regulator            01/01/70 00:00      
            High performance power FET?            01/01/70 00:00      
               maybe, maybe not            01/01/70 00:00      
                  Not quite            01/01/70 00:00      
                     Misunderstanding?            01/01/70 00:00      
                        Not true either            01/01/70 00:00      
                           Examples?            01/01/70 00:00      
                              IRF has a pageful of them            01/01/70 00:00      
                     Ok, maybre I was not clear, but correct            01/01/70 00:00      
                        Ehm, no            01/01/70 00:00      
                           which I also covered            01/01/70 00:00      
                              Well            01/01/70 00:00      
                                 (not so) recent knowledge            01/01/70 00:00      
                        Even the voltage!            01/01/70 00:00      
   LM317            01/01/70 00:00      
   NMOS?            01/01/70 00:00      
      IRF got those too            01/01/70 00:00      
         Of course...            01/01/70 00:00      
   Load switching?            01/01/70 00:00      

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