Cascaded 555 timer IC output

[ravi2024]

Hi,


I was trying to simulate a cascaded double stage 555 timer IC ckt. The motto was to get two voltage o/p displaced in time. But the voltage pulse at second stage output is vary less. I am using a 10 V battery as the source and the first output voltage pulse is around 9.6 V but the output voltage pulse is only 1.4 volts. Could anyone tell me why so or where is the fault? I have attached the ckt and the output plot.

 

[tgootee]

Try a larger value for the output resistor.

 

[schmitt trigger]

50 ohms is indeed way too low a load value for a 555. It would attempt to put out 200 mA.

If you cannot use a larger load resistor, buffer it with an emitter follower. Any general purpose NPN transistor will do

 

[sadan]

Well, I shall be thankful if picture or final design diagram is shared. Regards