An interactive electrical engineering laboratory for designing circuits, running physics-based simulations, and exploring core electrical engineering concepts.
Electrical and electronic component reference for undergraduate students, with explicit model support and limitations.
93 components · Reference entries describe model requirements and are not simulation claims.
Basic electrical
V = IR; P = I²R
VA − VB = Vsource
v(t) = Vpk sin(2πft)
IAB = Iset
I = C dV/dt; E = ½CV²
V = L dI/dt; E = ½LI²
Vreference = 0
Ron = 0.001 Ω; Roff = 10¹² Ω
Semiconductors
I = Is(exp(V/nVT) − 1)
Electrical machines
V = RI + L dI/dt + Keω; T = KtI
V = IR; protection requires time-current data
Diode: I = Is(exp(V/nVT) − 1); transistor: device-specific
Analog electronics
Small-signal model: Vo(s) = H(s) Vi(s)
Digital electronics
Boolean/state transition rules; not an analog model
Power electronics
Ideal buck: Vo = DVi; boost: Vo = Vi/(1 − D)
J dω/dt = Tem − Tload − Bω
Power systems
Complex power S = V I*; network KCL/KVL
Control systems
u(t) = Kp e + Ki ∫e dt + Kd de/dt
Energy systems
Energy = ∫P dt; wind P = ½ρAv³
Measurements
Vab = Va − Vb; P = VI; energy = ∫P dt
Microcontrollers
PWM average ≈ duty × supply for filtered ideal output