Programming instructions

Lamp
National Instruments Corporation 11-3 Multisim Component Reference Guide
11.4 Lamp
The lightbulb is an ideal, nonlinear resistive component that dissipates energy in the form of
light. It has two rated values, maximum power (P
max
) and maximum voltage (V
max
). P
max
is
measured in watts, from mW to kW. V
max
is measured in volts, from mV to kV. A bulb will
burn out if the voltage across it exceeds V
max
. At that point, the power dissipated in the bulb
exceeds P
max
.
11.4.1 Time-Domain and AC Frequency Models
The bulb is modeled by a resistor, R.
The bulb is lit if
where:
V
max
= the maximum voltage that can be applied across the bulb.
P
max
= the maximum power that can be dissipated by the bulb.
For AC circuits, V
max
is the peak value of the applied voltage, not its RMS value.
R
V
P
if V V
Ri
f
VV
ab
ab
=≤
=∞ >
max
max
2
max
max
V
VV
ab
max
2
<≤max
ComponentRef.book Page 3 Thursday, December 7, 2006 10:12 AM