Hi Guys I Am Doing My Masters In Ee In Utarlington I Need A Project On Counter And Timer Circuits Which Is To Be Implemented At Transistor Level And Has To Be Simulated In Pspice........i Want To Drive The Counter With 555 Timer In Astable Mode.......PLEASE HELP ME GUYSL.........
I would think it would be CMOS.
I am astounded that a Master's candidate would be asking for help from a hobbyists' forum.
Chaluvadi, what part(s) of the project do you need help with?
I have been going through the internet and library for a transistor level 555 timer and counter circuit that can be simulated and spice .......... i have got model of 555 timer with rs flipflops and nand gates ........ i can actually realise them but the schedule i have got is too hectic so.......i dont have a choice but to ask in the forum........
The TS555 datasheet has a schematic. You will have to work out the device sizes.
EDIT: Here is the subcircuit for a CMOS 555. It probably does not represent the TS555 schematic. I make no claims for its accuracy, and I don't remember where I got it.
thanks for ur reply roff............i have got a schematic for 555 timer that is not working and its saying as less than two connections at node i havent figured that out because this was the first time i was using pspice..........the code is as follows............
I have been going through the internet and library for a transistor level 555 timer and counter circuit that can be simulated and spice .......... i have got model of 555 timer with rs flipflops and nand gates ........ i can actually realise them but the schedule i have got is too hectic so.......i dont have a choice but to ask in the forum........
hey thank u very much man........i had worked it on ltspice and it worked out well ...... can u get me a counter that runs with 555 astable circuit in transistor level........
hey thank u very much man........i had worked it on ltspice and it worked out well ...... can u get me a counter that runs with 555 astable circuit in transistor level........
Not me. As far as I'm concerned, you can do the rest of your homework yourself. If you have a problem other than "Can you get **** for me", we might be able to help. This sounds to me like a case of procrastination, not attending/paying attention in class, laziness, or just plain ineptitude. Maybe I am being too harsh. If you think I'm wrong, you are free to state your case.
u cant say that I had come up with my model and what u have just said is that it worked on ltspice and i cant even figure out how were u able to come to those stupid conclusions ...... any ways its too absurd of u to say that .........this is my last post in this forum and im never even looking into here............
Sorry about my previous message (the one before yours, I've just deleted), it was a bit immature and didn't help the situation.
chaluvadi shouudn't be blamed entirely for the above post, it was in response to my immature post. Not that it's any excuse for his behaviour, just because someone provokes you, it doesn't mean you should retaliate.