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  • jhsa140467 commented on Stish's instructable DIY Power Supply for 5V and 3.3V6 months ago
    DIY Power Supply for 5V and 3.3V

    Idea, connect another 5V regulator before the 3.3V regulator. That will decrease the difference of potential on the 3.3V reg, keeping things cooler :-)Another alternative if you don't want to increase the parts number, would be to connect the input of the 3.3V reg to the output of the existing 5V regulator.. I prefer the first option though..

    It is still a good idea to install some heatsink on the regulators :-)

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  • jhsa140467 commented on tonep's instructable Anyone can make this 10W+10W amplifier1 year ago
    Anyone can make this 10W+10W amplifier

    Yes, and there are many that can do that.. Please have a look at this video, it explains it quite well.https://www.youtube.com/watch?v=IrB-FPcv1Dc

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  • jhsa140467 commented on tonep's instructable Anyone can make this 10W+10W amplifier1 year ago
    Anyone can make this 10W+10W amplifier

    Hi, nice Instructable.. You can use a P-Channel MOSFET (instead of the protection diode), with the Drain connected to the positive of the Power Supply, and the Source connects to the AMP's V+, and the gate connects to ground. Make sure you choose a Mosfet with a maximum "Gate - Source" voltage higher than the supply voltage. Something around 20V should be Ok.The advantage is that the voltage drop across the Mosfet is negligible. Make sure you also choose a Mosfet with a low RDSon (ON resistance).

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