aurelien_7
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hi!
I need 18 volts supply, since i'm having 12 volts transformer i decided to use full wave voltage doubler to raise voltage to 24 volts.
But at the output of doubler i'm getting 36 volts :/ and after pluging it to LM7818 at the output of regulator i'm getting 3.5 volts
In datasheet of LM7818 maximum input voltage is 33 volts!
So i don't know beacause of the fact that input voltage is exceeding maximum input voltage rated by datasheet I am wierd output from regulator.
So I am open for advices
I need 18 volts supply, since i'm having 12 volts transformer i decided to use full wave voltage doubler to raise voltage to 24 volts.
But at the output of doubler i'm getting 36 volts :/ and after pluging it to LM7818 at the output of regulator i'm getting 3.5 volts
In datasheet of LM7818 maximum input voltage is 33 volts!
So i don't know beacause of the fact that input voltage is exceeding maximum input voltage rated by datasheet I am wierd output from regulator.
So I am open for advices