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Sim LabComponents

Passive parts and switches

Resistors, capacitors, inductors, sensors, switches, relays and transformers.

Basics

PartBehaviour
Wire and Routed WireConnect terminals. Routed Wire bends around corners.
ResistorOpposes current. Set the resistance.
CapacitorStores charge. Passes AC, blocks DC.
Polarized capacitorAn electrolytic type. Mind the polarity.
InductorStores energy in a magnetic field. Opposes changes in current.
PotentiometerA resistor with a slider. Use it as a voltage divider.

Sensors and special resistors

PartBehaviour
Photoresistor (LDR)Resistance falls as light increases.
NTC thermistorResistance falls as temperature rises.
MemristorA resistor whose value depends on the charge that has passed through it.
FuseBreaks the circuit when too much current flows.
Spark gapConducts when the voltage across it is high enough.
CrystalA resonant element used for accurate frequencies.

Switches

PartBehaviour
Switch (SPST)On or off. Click to toggle.
Switch (SPDT)Connects one terminal to either of two others.
Push switchClosed only while you hold it.
DPDTA double-pole, double-throw switch.
Make-before-breakConnects the new contact before releasing the old one.
Cross switchA reversing switch.

Relays

PartBehaviour
RelayA coil that closes a switch when powered.
Relay coil and Relay contactThe coil and the switch of a relay as separate parts.

Magnetics and lines

PartBehaviour
TransformerTwo coupled coils. Set the turns ratio.
Tapped transformerA transformer with a centre tap.
Custom transformerA transformer with settings you define.
Transmission lineA line with a delay, for high-frequency work.
GyratorMakes a capacitor behave like an inductor, and the reverse.