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Circuit Simulator

Using this circuit simulator you can effectively simulate most of the basic and standard electronic circuit configurations and modules.

You can simulate many different circuits configurations, such as 555 circuits, 741 circuits, oscillator circuits, comparator circuits, all passive/active circuits, then watch the waveforms on the built--in oscilloscope, track voltage/current everything you want to test with a given circuit design, before venturing into a practical prototype designing.

Please wait for 5 to 10 seconds for the simulator to load.......

Circuit Simulator originally created by Paul Falstad. Ported to JavaScript by Iain Sharp. Source code available on GitHub.

Reader Interactions

Questions & Answers

Total Posts: 13
Newest Oldest
Asikpo Okon
September 10, 2025 • 1 year ago #185072

pls how can get the above simulator

Reply
SwagatamAdmin
September 10, 2025 • 1 year ago #185078

You can simulate all basic circuits in the above simulator, please feel free to use it here itself…

Reply
thanyani
October 3, 2025 • 1 year ago #187296

hello i hope you are doing well i need help with my project of sound activated switch circuit using 2 op amps this are the componets that are allowed Op-amps: 741, 358, or 324 ,555 timers ,
Transistors, LEDs, relays ,Resistors, capacitors, wires ,we need to double clap to turn on the led and double clap to turn off ,please i need help with the schematic

Standard electronic components

Reply
SwagatamAdmin
October 3, 2025 • 1 year ago #187396

Hi, thanks, you can find double clap switch ideas at the end of the following article:
https://www.homemade-circuits.com/make-simple-electronic-clap-switch/

Reply
Thanyani
October 3, 2025 • 1 year ago #187403

I have tried building the circuit with multism and theres ni mic and relay
Any suggestions which software to use

Reply
SwagatamAdmin
October 4, 2025 • 1 year ago #187520

I think it is better to build it practically and then tweak the settings slowly to achieve the intended results…
I have no idea which simulator would be the best to test these circuits…

Reply
Soe Aung
November 10, 2025 • 12 months ago #190087

Nowsaday, people get trouble with 16S BMS due to imbalance 3.2V LiFePO4 battery cells, I find additional capacitive equalizer circuit making with the calculation.

Reply
NIHORIMBERE ELIHOUD
November 16, 2025 • 11 months ago #190598

this topic is very well

Reply
Joaquim Raphael Colossio
March 16, 2026 • 7 months ago #202844

Controle remoto a uma distância de até 5 metros comandando três motores de até 6 volts.

Reply
nikhil
April 21, 2026 • 6 months ago #205503

I am doing project on piezoelectric disk how can i store the output of the piezoelectric disk to a 3.7v rechargeable battery

Reply
SwagatamAdmin
April 22, 2026 • 6 months ago #205551

It is not possible to charge a 3.7V li-ion battery from piezo disk, unless there are many many of them wired in series parallel..

Reply
Nikhil
April 22, 2026 • 6 months ago #205555

How many piezo disks we have to charge a battery and requirement

Reply
SwagatamAdmin
April 22, 2026 • 6 months ago #205570

A 27mm piezo might generate 1V to 3V at 3mA to 9mA when struck sharply on it, so you may require at least 50 to 100 of these in parallel, with a condition that all receive the external hits together.

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