loup-garou
New Member
hi everyone,
I'd like to control my optocoupler (4N35) with a 22V (filtred but not regulated), its Led has the following carateristics : Vfmax=1.5v,If=10mA,
I was told that a Zener diode is useful in this case to stabilise the tension before the Led (do you agree.... ?), has anyone made such circuit ? which reference for the Zener should I take ?
a schematic will be highly appreciated !
thanks in advance.
I'd like to control my optocoupler (4N35) with a 22V (filtred but not regulated), its Led has the following carateristics : Vfmax=1.5v,If=10mA,
I was told that a Zener diode is useful in this case to stabilise the tension before the Led (do you agree.... ?), has anyone made such circuit ? which reference for the Zener should I take ?
a schematic will be highly appreciated !
thanks in advance.