Bistable Relay SPDT (Single Coil)
Miscellaneous
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Generic
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Curated by CircuitSim
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Used in 1 public circuit
About this component
Single-coil latching SPDT relay. A positive coil pulse sets the contact, a reverse pulse resets it, and either position is held with no coil power. Each simulation starts with COM connected to NC.
Parameters
Basic settings
6 parameters
COILRESISTANCE
Coil resistance
Series resistance of the coil. Together with coil inductance, sets coil current and its rise time.
125 Ω
COILINDUCTANCE
Coil inductance
Series inductance of the coil; the coil time constant is inductance divided by resistance.
50m H
SETCURRENT
Set current
Positive current from Coil+ to Coil− required to latch COM to NO. Must be positive.
20m A
RESETCURRENT
Reset current
Magnitude of reverse coil current required to latch COM to NC. Must be positive.
20m A
ONRESISTANCE
Contact on resistance
Resistance of the selected contact path.
0.1 Ω
OFFRESISTANCE
Contact off resistance
Leakage resistance of the unselected contact path; keep greater than on resistance.
1e9 Ω
Pins
Pins
5 pins
1
Coil+
Coil terminal: positive current into this pin sets COM to NO; reverse current resets COM to NC.
2
Coil−
Coil return for set pulses; positive current into this pin resets COM to NC.
3
COM
Common terminal of the electrically isolated changeover contact.
4
NO
Connected to COM after a set pulse, including when coil current returns to zero.
5
NC
Connected to COM at the start of each run and after a reset pulse.
Public circuits using this component
Circuits
1 circuit
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