charging capacitor

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    Amplifier aux switch

    This amplifier is built after some good thoughts considering its previous models, they even provided an aux switch with it and non of the sell know how that works, its tpa3116d2 2.1 as you can see in the pic there is an aux switch ((aux sw) at the back of the Bluetooth antenna/aux jack ) ig...
  2. A

    How to activate 12V/2A electromagnet with 5V (USB power) each 60 minutes?

    Hi all, I feel like I am stuck because don't know how to solve following "simple" solution: Somehow I have to (each 60 min) activate 12V/2A electromagnet, with 5V input voltage (tipical PC USB (5V/100mA). 5V is powering microcontroller, and with that microcontroller, each 60 min I have to...
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