aandavan
Advanced Member level 4
Hi,
I am generating a 40KHz frequency with the help of a astable multivibrator circuit. I got one circuit in that they are using R1 as 4k and a variable resisitor connected in series to that R1 and R2 as 18K and C1 as 680PF . By using that its working.
I used one RC calculator and i calculated the alternate resistor value.I used R1 as 47ohm and R2 as 147ohm and C1 as .1microfarad. By using that value its not getting that correct frequency. Anyone help me please...........
I am generating a 40KHz frequency with the help of a astable multivibrator circuit. I got one circuit in that they are using R1 as 4k and a variable resisitor connected in series to that R1 and R2 as 18K and C1 as 680PF . By using that its working.
I used one RC calculator and i calculated the alternate resistor value.I used R1 as 47ohm and R2 as 147ohm and C1 as .1microfarad. By using that value its not getting that correct frequency. Anyone help me please...........