this post was submitted on 07 Nov 2025
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NAND Gate Qucs (lemmy.world)
submitted 3 days ago* (last edited 3 days ago) by luruca@lemmy.world to c/askelectronics@discuss.tchncs.de
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I’m trying to simulate a NAND gate using MOSFETs in QUCS, but I’m having trouble getting it to work. Could someone help me figure out what’s going wrong?

All the resistors are set to 1 kΩ, the supply voltage is 1 V, and the square wave generator has a period of 1 ms and 2 ms with a 10 ns switching time. When I draw the same circuit in Voltsim on my phone, it works as expected.

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[–] luruca@lemmy.world 1 points 3 days ago

This is the working Voltsim version :