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???
02/28/11 22:40
Modified:
  02/28/11 22:45
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 		 #181354 - Turn the tables...
Responding to: ???'s previous message
Peter said:
When a user decides to use a +15V adapter (we deliver a +9V ofcourse) I want the device to respond by 'shutdown'.
The device is designed for 9V.
It's a little hard to put it that way but it prevents endless discussions with people who used an adapter we didn't provide.

Why all that hazzle? Why not powering everything inside your device by this wide input range 5V switcher you talked about earlier? You could easily take a step-up switcher at the output of your 5V switcher, or this step-down ZXLD1356 thingy for the backlight current generation. Also, it would free you of the need of a sophisticated, regulated supply, delivering a very certain 9V voltage.

Is the 9V-supply that thing you want to make money with? Or do you want to "punish" your customers?

Turn the tables and design your device in such a way, that it will run with all kinds of usual adapters. Would be a big plus in your specifications' list! Remember: "The customer is always right." Don't annoy him with a "shutdown". Sooner or later he will quit it with a "bye-bye"...

Kai Klaas

List of 31 messages in thread
TopicAuthorDate
Overvoltage protection            01/01/70 00:00      
   comments            01/01/70 00:00      
   Trip Point Accuracy            01/01/70 00:00      
   Voltage trip and current trip            01/01/70 00:00      
   First, you must find out...            01/01/70 00:00      
      a little more info on the application            01/01/70 00:00      
         then this may be simpler            01/01/70 00:00      
            Voltage regulator as CC?            01/01/70 00:00      
               if you use a transistor for the CC ...            01/01/70 00:00      
                  And you could even limit...            01/01/70 00:00      
               Is it worth it?            01/01/70 00:00      
                  This one, e.g....            01/01/70 00:00      
                     That's the kind of thing            01/01/70 00:00      
                        CC source            01/01/70 00:00      
                           Turn the tables...            01/01/70 00:00      
                              Pros / Cons            01/01/70 00:00      
                                 Professional eqipment = be nice/forgiving to your customers            01/01/70 00:00      
                                    Never to old to learn            01/01/70 00:00      
                                       PWM it            01/01/70 00:00      
                                          PWM !            01/01/70 00:00      
                                       max 20V........            01/01/70 00:00      
                                       ignore - double posting - sorry            01/01/70 00:00      
                                       Power outage totally different            01/01/70 00:00      
                                          Power failure            01/01/70 00:00      
                                 500mA backlight, but what voltage            01/01/70 00:00      
                           A vote for your plan            01/01/70 00:00      
                              Midi switcher            01/01/70 00:00      
                                 Midi Sequencer < < Maxi Engineering            01/01/70 00:00      
                                    building a good robust product            01/01/70 00:00      
                                 Common Mode filter            01/01/70 00:00      
                                    Isn't needed in your case probably...            01/01/70 00:00      

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