Shachar85
Member level 2
Hello
I'm using a LM7805 to get a stable 5v from a 12v power supply.
I connected a 103 capacitor between Vin and GND.
and 103+220uF(16v) between the 5v and GND.
if I check the 5v with multimeter, I get a read of 5.05-5.06. which is good.
but as I use it for digital readings and had many problems with it, I checked it as a digital read and saw that the signal is jumping from 0v to 5v all the time. Very Very not stable.
I'm not sure, but I think it wasn't like this yesterday. Not sure about that.
Shouldn't I get a clean 5v output? Specially when 2 capacitors are connected at the output?
Thank you
I'm using a LM7805 to get a stable 5v from a 12v power supply.
I connected a 103 capacitor between Vin and GND.
and 103+220uF(16v) between the 5v and GND.
if I check the 5v with multimeter, I get a read of 5.05-5.06. which is good.
but as I use it for digital readings and had many problems with it, I checked it as a digital read and saw that the signal is jumping from 0v to 5v all the time. Very Very not stable.
I'm not sure, but I think it wasn't like this yesterday. Not sure about that.
Shouldn't I get a clean 5v output? Specially when 2 capacitors are connected at the output?
Thank you