Ohmforge – Virtual electronics workbench

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Ohmforge is a full program that runs in your browser and needs JavaScript. Please enable JavaScript, or use its engine as tools without it:

Ohmforge DC Operating Point – SPICE netlist in, node voltages, branch currents, power and overload warnings out.
Ohmforge Transient Simulation – Simulate a circuit over time: waveforms, Vpp/RMS/frequency, CSV and a chart.
Ohmforge AC Sweep (Bode plot) – Frequency response of a circuit: Bode magnitude/phase, −3 dB corner and unity gain.
Ohmforge LED Resistor Calculator – Series resistor for LEDs, rounded to a standard value and checked with a real diode model.