/diy/ - Do It Yourself

Anonymous Thu Jul 26 18:31:13 2018 No.1433131 [View]
File: 12 KB, 662x377, 1518785718061.png [View same] [iqdb] [saucenao] [google]

>>1433115
ah, Pic related
the diode is a cheap and semi-accurate 0.5V voltage regulator. good enough for what we're doing here anyway. if you want better accuracy you can replace it with a precision voltage reference e.g. TL431 or a Zener diode
anyway we divide the input voltage down so it's well within the range of the adjustment pot, compare, and if exceeded, turn on the MOSFET and pull in the relay

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/diy/ - Do It Yourself

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