neptune Member Aug 29, 2011 #1 what is wrong with this circuit. transient analysis = stop time 100ms , start time 0ms , maximum timestep 10 Attachments flip flop.asc flip flop.asc 1.4 KB · Views: 453
what is wrong with this circuit. transient analysis = stop time 100ms , start time 0ms , maximum timestep 10
ericgibbs Well-Known Member Most Helpful Member Aug 29, 2011 #2 neptune said: what is wrong with this circuit. transient analysis = stop time 100ms , start time 0ms , maximum timestep 10 Click to expand... Look at these images... you have tran settings wrong. Attachments AAesp02.gif 11.5 KB · Views: 573 AAesp03.gif 41.6 KB · Views: 527
neptune said: what is wrong with this circuit. transient analysis = stop time 100ms , start time 0ms , maximum timestep 10 Click to expand... Look at these images... you have tran settings wrong.
neptune Member Aug 29, 2011 #3 how did it worked ? i used the same transient settings. i am getting this Attachments flips.jpg 262.9 KB · Views: 510
ericgibbs Well-Known Member Most Helpful Member Aug 29, 2011 #4 neptune said: how did it worked ? i used the same transient settings. i am getting this Click to expand... hi, Like i said the .tran is wrong You have a STOP time of 0.1second and a Time STEP of 10 seconds. Note: the Time Step is the intervals which LTS calculates the plot points.! so your total Stop time for the plot is 0.1 second and the next interval is 10 seconds later. The STOP is the length of the Time Axis of the plot. Do you follow OK.?
neptune said: how did it worked ? i used the same transient settings. i am getting this Click to expand... hi, Like i said the .tran is wrong You have a STOP time of 0.1second and a Time STEP of 10 seconds. Note: the Time Step is the intervals which LTS calculates the plot points.! so your total Stop time for the plot is 0.1 second and the next interval is 10 seconds later. The STOP is the length of the Time Axis of the plot. Do you follow OK.?
neptune Member Aug 30, 2011 #5 what transient settings should i use then, my 1/RC time constant is 1/100s alternatively frequency is 100Hz image attached Attachments flop.jpg 250.1 KB · Views: 487
what transient settings should i use then, my 1/RC time constant is 1/100s alternatively frequency is 100Hz image attached
ericgibbs Well-Known Member Most Helpful Member Aug 30, 2011 #6 neptune said: what transient settings should i use then, my 1/RC time constant is 1/100s alternatively frequency is 100Hz image attached Click to expand... hi neptune, Post your asc file and I will modify it for you.
neptune said: what transient settings should i use then, my 1/RC time constant is 1/100s alternatively frequency is 100Hz image attached Click to expand... hi neptune, Post your asc file and I will modify it for you.
ericgibbs Well-Known Member Most Helpful Member Aug 30, 2011 #7 neptune said: what transient settings should i use then, my 1/RC time constant is 1/100s alternatively frequency is 100Hz image attached Click to expand... Look at this marked up image. Attachments AAesp02.gif 38.3 KB · Views: 500
neptune said: what transient settings should i use then, my 1/RC time constant is 1/100s alternatively frequency is 100Hz image attached Click to expand... Look at this marked up image.
alec_t Well-Known Member Most Helpful Member Aug 30, 2011 #8 Use Simulate/Edit simulation Cmd, empty all the boxes in the pop-up dialogue, then just enter 0.3 in the Stop Time box.
Use Simulate/Edit simulation Cmd, empty all the boxes in the pop-up dialogue, then just enter 0.3 in the Stop Time box.
neptune Member Aug 30, 2011 #9 i got this using same settings. now what ? Attachments uu.png 160.4 KB · Views: 527 flip flop.asc flip flop.asc 1.4 KB · Views: 423 Last edited: Aug 30, 2011
ericgibbs Well-Known Member Most Helpful Member Aug 30, 2011 #10 neptune said: i got this using same settings. now what ? Click to expand... Look at the frequency of your bistable in post #2. Your time axis of 500usec will not show a single waveform... Make it 1second Last edited: Aug 30, 2011
neptune said: i got this using same settings. now what ? Click to expand... Look at the frequency of your bistable in post #2. Your time axis of 500usec will not show a single waveform... Make it 1second
neptune Member Aug 30, 2011 #11 ok now its coming . but its therotical frequency is something else if you calculate 1/RC But it is showing freq. as 7Hz . ? Attachments sdf.png 164.3 KB · Views: 451
ok now its coming . but its therotical frequency is something else if you calculate 1/RC But it is showing freq. as 7Hz . ?
ericgibbs Well-Known Member Most Helpful Member Aug 30, 2011 #12 neptune said: ok now its coming . but its therotical frequency is something else if you calculate 1/RC But it is showing freq. as 7Hz . ? Click to expand... Thats better. What do you calculate the frequency should be.?? Most electrolytic caps can have a tolerance of +/-10% or more! Last edited: Aug 30, 2011
neptune said: ok now its coming . but its therotical frequency is something else if you calculate 1/RC But it is showing freq. as 7Hz . ? Click to expand... Thats better. What do you calculate the frequency should be.?? Most electrolytic caps can have a tolerance of +/-10% or more!
neptune Member Aug 30, 2011 #13 if i calculate it , R= 10K ohm and C= .000001 Farad 1/RC = 0.1s , so Freq. = 10 Hz thats 3 Hz behind :?
if i calculate it , R= 10K ohm and C= .000001 Farad 1/RC = 0.1s , so Freq. = 10 Hz thats 3 Hz behind :?
ericgibbs Well-Known Member Most Helpful Member Aug 30, 2011 #14 neptune said: if i calculate it , R= 10K ohm and C= .000001 Farad 1/RC = 0.1s , so Freq. = 10 Hz thats 3 Hz behind :? Click to expand... hi, Look at this link. **broken link removed**
neptune said: if i calculate it , R= 10K ohm and C= .000001 Farad 1/RC = 0.1s , so Freq. = 10 Hz thats 3 Hz behind :? Click to expand... hi, Look at this link. **broken link removed**
ericgibbs Well-Known Member Most Helpful Member Aug 30, 2011 #16 neptune said: ok , i forgot the formula thankyou Click to expand... So now what do you calculate the freq should be?
neptune said: ok , i forgot the formula thankyou Click to expand... So now what do you calculate the freq should be?
ericgibbs Well-Known Member Most Helpful Member Aug 30, 2011 #18 neptune said: 7.29 Hz calculated 7 Hz shown in simulation Click to expand... Thats close enough when component tolerances are considered.
neptune said: 7.29 Hz calculated 7 Hz shown in simulation Click to expand... Thats close enough when component tolerances are considered.