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11/15/14 02:13
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#190376 - Car amp remote signal

I want to create a device to switch car amp sending the remote signal to it using a microcontroller.
I have searched lots, the only information I found it is positive activated with 12v.

How can I sucessfully do this?
Firstly I thought in using a small mosfet, but as it is positive activated it would need to be a P channel but I cant buy any small P channel mosfet here.

Thank you.

List of 15 messages in thread
Car amp remote signal            01/01/70 00:00      
   use a relay            01/01/70 00:00      
      There is other option than relay?            01/01/70 00:00      
         Hi Power            01/01/70 00:00      
            Let me explain a little...            01/01/70 00:00      
         plenty, but ....            01/01/70 00:00      
            I understand...            01/01/70 00:00      
   Little update about involved currents            01/01/70 00:00      
      if it is 12V hi/lo and less than 200mA            01/01/70 00:00      
         Amp needs 12v for switching            01/01/70 00:00      
            2 transistors            01/01/70 00:00      
               You mean this one?            01/01/70 00:00      
                  Yes            01/01/70 00:00      
                     Thank you!            01/01/70 00:00      
            follow the logic            01/01/70 00:00      

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