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I_pulse

Pulse current source Description

The I_pulse component models a periodic pulse source with unlimited number of periods. A single pulse is described by the following table:

 time value 0 I1 TD I1 TD+TR I2 TD+TR+PW I2 TD+TR+PW+TF I1 TSTOP I1

Intermediate points are determined by linear interpolation. A pulse it looks like a saw tooth, use this parameters e.g.:

 Parameter Value I1 0 I2 1 TD 0 TR 1 TF 1 PW 2 PER 1

Note:

 • All parameters of sources should be set explicitly.
 • since TSTEP and TSTOP are not available for modeling in Modelica, differences to SPICE may occur if not all parameters are set.
 Equations $0={i}_{p}+{i}_{n}$ $i={i}_{p}={I}_{1}+\left\{\begin{array}{cc}0& t<{T}_{\mathrm{D}}\vee \mathrm{counter2}=0\vee {T}_{0}+\mathrm{Tfalling}\le t\\ \left(t-{T}_{0}\right)\frac{{I}_{2}-{I}_{1}}{\mathrm{Trising}}& t<{T}_{0}+\mathrm{Trising}\\ {I}_{2}-{I}_{1}& t<{T}_{0}+\mathrm{Twidth}\\ \left({T}_{0}+\mathrm{Tfalling}-t\right)\frac{{I}_{2}-{I}_{1}}{\mathrm{Tfalling}-\mathrm{Twidth}}& \mathrm{otherwise}\end{array}$ $v={v}_{p}-{v}_{n}$

Variables

 Name Units Description Modelica ID $v$ $V$ Voltage drop between the two pins $\left({v}_{p}-{v}_{n}\right)$ v $i$ $A$ Current flowing from pin p to pin n i

Connections

 Name Description Modelica ID $p$ Positive pin p $n$ Negative pin n

Parameters

 Name Default Units Description Modelica ID ${I}_{1}$ $0$ $A$ Initial value I1 ${I}_{2}$ $0$ $A$ Pulsed value I2 ${T}_{\mathrm{D}}$ $0$ $s$ Delay time TD ${T}_{R}$ $1$ $s$ Rise time TR ${T}_{F}$ ${T}_{R}$ $s$ Fall time TF $\mathrm{PW}$ $\mathrm{\infty }$ $s$ Pulse width PW $\mathrm{PER}$ $\mathrm{\infty }$ $s$ Period PER

 Modelica Standard Library The component described in this topic is from the Modelica Standard Library. To view the original documentation, which includes author and copyright information, click here.

 See Also