Hello,
I have been fiddling around with the 556 timer. As you know, a 556 timer simply incorporates two 555 timers in one chip.
Timer #1 generates a 180HZ square wave (I believe its called "astable"!) and timer #2 generates a 38 KHZ square wave. The ouputs of timer #1 and #2 connect to some other circuits. But there's one problem. When I connect the outputs of these timers to the rest of my circuit, my LCD screen flickers.
I am not an electronic engineer or anything (I only have college) and therefore, all I tried to do to resolve this is to try to put an integrator (a Resistor using a 5K pot, with a parallel cap (0.01)) and I have tried to vary the resistor and I see that the wave attenuates. But still, the flickering persists. The only time that the flickering stops is when I disconnect the timer #1, 180HZ output signal from the rest of my circuit.
What can one do to get rid of flikering caused by the output of the 555 or 556 timer chips.
I did try to put 0.01, 0.001, 0.1 and 4.7 mico farad caps in parrallel with my DC power supply and no luck.
Any suggestions?
With regards
Bob
I have been fiddling around with the 556 timer. As you know, a 556 timer simply incorporates two 555 timers in one chip.
Timer #1 generates a 180HZ square wave (I believe its called "astable"!) and timer #2 generates a 38 KHZ square wave. The ouputs of timer #1 and #2 connect to some other circuits. But there's one problem. When I connect the outputs of these timers to the rest of my circuit, my LCD screen flickers.
I am not an electronic engineer or anything (I only have college) and therefore, all I tried to do to resolve this is to try to put an integrator (a Resistor using a 5K pot, with a parallel cap (0.01)) and I have tried to vary the resistor and I see that the wave attenuates. But still, the flickering persists. The only time that the flickering stops is when I disconnect the timer #1, 180HZ output signal from the rest of my circuit.
What can one do to get rid of flikering caused by the output of the 555 or 556 timer chips.
I did try to put 0.01, 0.001, 0.1 and 4.7 mico farad caps in parrallel with my DC power supply and no luck.
Any suggestions?
With regards
Bob