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ELECTROMAGIX

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Posts posted by ELECTROMAGIX

  1. 10 hours ago, audioguru said:

    The output of the voltage regulator and positive supply for the LM386 and Arduino all need a capacitor to ground to prevent oscillations.

    Capacitor is present on board, forgot to draw in the plan.... :D…. Scrooj, that's my neopixel controller board, I made board first  schema very recently. happy to meet you still alive … after six years... this site seems deserted, only the old people like you still dedicating time to educate people....and the people are running behind digital and IOT apps without the knowledge of fundamental electronics. Ha !!

  2. On ‎9‎/‎20‎/‎2018 at 9:20 PM, audioguru said:

    Here is another Circuitspedia circuit that has serious errors. Also, its text says to use a 3V to 6V supply but the datasheet for its LM386 says that its minimum supply is 4V or 5V.

    mic speaker amplifier.png

    That transistor itself is not required, LM386 will amplify mic input while 386 in high gain mode (1and 8 connected with capacitor).

     

    4 minutes ago, ELECTROMAGIX said:

    That transistor itself is not required, LM386 will amplify mic input while 386 in high gain mode (1and 8 connected with capacitor).

     

     

    1.jpg

    RIA v2 sc.jpg

    10 minutes ago, ELECTROMAGIX said:

    That transistor itself is not required, LM386 will amplify mic input while 386 in high gain mode (1and 8 connected with capacitor).

     

     

    1.jpg

    RIA v2 sc.jpg

     

    1.JPG

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