Electricity Lab reference
Every documented component, with its simulator representation in view.
37 components across 10 families. Search by name, symbol or what you are trying to build.
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37 components
Sources
5 components
Dry batteryModels a 1.5 V dry cell as a fixed DC EMF in series with 0.5 Ω of internal resistance, making load-dependent terminal-voltage sag observable.
Battery holderRepresents two default dry cells already connected in series, exposed through one +/− pair as a 3 V source with 1 Ω of combined internal resistance.
DC power supplyProvides an adjustable 0–16 V DC source behind a 0.1 Ω modeled output path, with a resettable 2 A protection state for controlled bench investigations.
AC power supplyGenerates RMS-scaled sine, square, triangle, or unipolar pulse waveforms from 0.5–100 Hz and 0–16 V RMS for transient and frequency-response investigations.
Constant-current supplyA 0–500 mA constant-current source with a 12 V compliance clamp and 100 mΩ sensing path for current-regulation and load-line investigations.Switches
4 components
Knife switchA visible SPST classroom switch modeled as 1 mΩ when closed and 1 GΩ when open, so its selected state remains numerically finite in the solver.
SPDT switchRoutes one pole to either of two throws, using a 1 mΩ selected path and a 1 GΩ unselected path for changeover and two-way-control circuits.
DPDT switchA six-terminal, two-pole changeover whose commons select their A or B contacts together for polarity-reversing and paired-routing circuits.
RelayAn electrically isolated SPDT relay model with a 121 Ω coil path, 35 mA pickup, 15 mA dropout, and deterministic 30 ms operate and 20 ms release delays.Meters
7 components
AmmeterA series ammeter with wiring-selected 3 A and 0.6 A full-scale taps; the modeled burden is 25 mΩ on the high range and 125 mΩ on the low range.
VoltmeterA parallel analog voltmeter with wiring-selected 3 V and 15 V ranges, presenting 3 kΩ or 15 kΩ respectively under its 1 kΩ-per-volt model.
GalvanometerA 60 Ω, center-zero galvanometer with ±25 mA full-scale deflection for observing current direction and detecting balance in bridge circuits.
MicroammeterA 0–200 µA moving-coil instrument with 1.5 kΩ movement resistance for high-resistance bridges, dividers, and sensor investigations.
WattmeterA four-terminal, center-zero ±10 W wattmeter that time-averages instantaneous voltage × current using a 50 mΩ current path and 10 kΩ voltage path.
MultimeterA four-mode digital meter providing DC voltage, DC current, AC voltage, and resistance measurements with mode-specific source and input-burden models.
OscilloscopeA dual-channel voltage-versus-time display with two 1 MΩ inputs referenced to one shared GND, adjustable volts/div, 1 ms/div–5 s/div timebase, and triggering.Loads
7 components
Fixed resistorA configurable linear resistor, 10 Ω by default and adjustable from 0.1 Ω upward, whose solver value remains constant while the bench runs.
Light bulbA 2.5 V, 300 mA incandescent-lamp model whose tungsten resistance, glow, inrush current, and burnout evolve with simulated filament temperature.
Sliding rheostatA three-terminal, 20 Ω default resistance track split by a movable wiper, supporting either two-terminal rheostat or three-terminal potentiometer wiring.
Resistance boxA four-decade resistance box that sums ×1000, ×100, ×10, and ×1 digits to select 0–9,999 Ω for bridge and substitution measurements.
LEDA nonlinear light-emitting diode model, approximately 2.1 V at 10 mA, with a 1 Ω sensing element that drives visible brightness from forward current.
DC motorCouples a 5 Ω armature path to a dynamic rotor model, feeding speed-proportional back-EMF into the circuit while inertia and friction govern visible rotation.
BuzzerA polarized 40 Ω audible indicator whose simulated sound turns on above 20 mW and off below 15 mW, providing hysteresis around its operating threshold.Components
10 components
CapacitorA polarized electrolytic model, 4,700 µF and 10 V by default, with selectable values and modeled reverse-bias and overvoltage failure.
Film capacitorA nonpolarized ideal-capacitance model, 100 µF by default, whose interchangeable terminals support AC, coupling, and transient investigations.
Inductor (coil)A configurable ideal inductance in series with explicit winding resistance—5 H and 20 Ω by default—for RL transients and frequency-response experiments.
DiodeA nonlinear silicon-junction model from anode to cathode, with a 10 nA saturation-current parameter and ideality factor of 1.5 for rectification experiments.
Zener diodeA nonlinear Zener model with selectable 3.3, 5.1, 6.8, or 9.1 V reverse breakdown, a 1 Ω sensing path, and modeled 1 W power failure.
FuseA selectable 0.25–3 A fuse modeled as a 20 mΩ link with inverse-time I² heating and a replaceable 1 GΩ blown state.
TransformerA two-winding coupled-inductor model with selectable primary-to-secondary turns ratio, 10 H primary inductance, 2 Ω primary resistance, and 0.999 coupling.
ThermistorA manually temperature-controlled NTC model using 1 kΩ at 25 °C and a β = 3950 K law across the 0–100 °C inspector range.
Photoresistor (LDR)A light-dependent resistor with a manually selected 0–100% illumination level and a log-linear resistance from 200 kΩ in darkness to 200 Ω at full brightness.
Resistance wire boardCalculates a resistance-wire board from R = ρL/A using selectable Ni-Cr, Cu-Ni, or Cu material, 0.20/0.40/0.80 mm diameter, and clamp position.Connections
3 components
Binding postsA four-post fan-out block whose p1–p4 terminals are fused into one ideal equipotential node without adding an electrical component or impedance.
0 V / COM referenceDeclares one connected node as the explicit 0 V solver and measurement reference without adding a source, impedance, or protective-earth connection.
LampThe current Lamp apparatus—under the legacy lamp-holder ID—combines a holder with the bare bulb’s 2.5 V, 300 mA thermal and burnout model.