Electronics > Beginners

Simulating ICs in Proteus

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Frongach:
Hi guys,
First post here. I'm having trouble simulating ICs in Proteus. I tried even a quite basic 555 timer circuit, and still no joy. Sorry for the general question, but can you spot anything wrong in the setup attached, someone mentioned to be careful about power supply to the chip, I tried battery and injecting a voltage as here, but neither got the circuit running in any case. The output at pin 3 just stays high here by the way,
Thanks a million,
Brian

txescientist:
Hi,

Try built-in examples. Attached you can find simulation I just made for you to test...

bson:
Welcome to the forum!  Are all your nodes actually connected?  I don't see any connection symbols (little black circles) for the two connections next to C1 and R1.

Rigolon:
As bson said.

C1 does not seem to be connected.

mc172:
It's been a long time since I used Proteus which is a shame because I really liked it! I seem to remember that you have got to set an initial charge value for capacitors otherwise oscillators will not start. Not sure whether the new versions require this, though. And as others have said, connect the components.

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