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Home : Support : Online Help : MapleSim : MapleSim Component Library : Electrical : Spice3 : Sources : Voltage : V_sffm

V_sffm

Single-frequency FM voltage source

Modelica Standard Library

Description

The V_sffm component models a source consisting of a carrier signal of frequency $F_{C}$ frequency-modulated by a sinusuoid of frequency $F_{S}$ .

•	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
	$i = i_{p} = - i_{n}$ $v = v_{p} - v_{n} = V_{O} + V_{A} \sin (2 π F_{C} t + MDI \sin (2 π F_{S} t))$

Variables

Name	Units	Description	Modelica ID
$v$	$V$	Voltage drop between the two pins $(v_{p} - v_{n})$	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
$V_{O}$	$0$	$V$	Offset	VO
$V_{A}$	$0$	$V$	Amplitude	VA
$F_{C}$		$Hz$	Carrier frequency	FC
$MDI$	$0$		Modulation index	MDI
$F_{S}$	$FC$	$Hz$	Signal frequency	FS

	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

Analog Components

Spice3 Overview

Spice3 Voltage Sources

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