hi, MP i built this circuit, now my voltmeter work, but When i put any voltage on it`s input it start to oscilate! for example if i put 5 V on Led display i will se 4.93, 5.10, 5, 5.14, 5.25, dont stop, can you help my? thank for you help CH.
I MP, i tried to build the voltmeter, but dont work, my voltmeter don`t want to work correctly!When i put any voltage on it`s input it start to oscilate! So if i put 5 V on Led display i will se 3.09,2.04,1.56,1.35, .It change value from second to second and it can`t stabilize it self. can you help me , For power it i use positive supply +5V and -5 it ok, but dont work, wy??? thanks, and excuse me my bad english.