Engee documentation

Diode

A diode with a piecewise linear VAC.

blockType: AcausalFoundation.Electrical.Elements.PieceWiseLinearDiode

diode

Path in the library:

/Physical Modeling/Fundamental/Electrical/Elements/Diode

Description

Block Diode It is a diode with a piecewise linear volt-ampere characteristic (VAC).

If the voltage across the diode is greater than the value of the Forward voltage parameter, then the diode behaves like a linear resistor with a low resistance, determined by the value of the On resistance parameter and a serial voltage source (voltage drop across the diode).

If the voltage across the diode is less than the forward voltage, then the diode behaves like a linear resistor with low conductivity, determined by the value of the conductivity parameter Off conductivity.

diode 1

With a forward bias of the VAC diode, it is described by the equations:



where

  • — tension;

  • — current;

  • — voltage of the serial source;

  • — direct voltage;

  • — resistance to forward displacement;

  • — conductivity at reverse displacement.

When the VAX diode is reversed, it is described by the equation:

Member ensures that there will be no current discontinuity during the transition between forward and reverse offsets.

Variables

Use the Initial Targets parameter group to set the priority and initial target values for the block parameter variables before modeling. For more information, see Configuring physical blocks using target values.

Ports

Conserving

# + — positive terminal
electricity

Details

The electrical port, which is the positive terminal of the diode.

Program usage name

p

# − — negative terminal
electricity

Details

The electrical port, which is the negative terminal of the diode.

Program usage name

n

Parameters

Parameters

# Forward voltage — minimum forward bias voltage
V | uV | mV | kV | MV

Details

The minimum voltage that must be applied to open the diode.

Units

V | uV | mV | kV | MV
Default value

0.6 V
Program usage name

v_forward
Evaluatable

Yes

# On resistance — forward displacement resistance
Ohm | mOhm | kOhm | MOhm | GOhm

Details

The resistance of the diode at forward bias.

Units

Ohm | mOhm | kOhm | MOhm | GOhm
Default value

0.3 Ohm
Program usage name

R_on
Evaluatable

Yes

# Off conductance — reverse bias conductivity
S | nS | uS | mS | 1/Ohm

Details

The conductivity of the diode at the reverse bias.

Units

S | nS | uS | mS | 1/Ohm
Default value

1e-08 1/Ohm
Program usage name

G_off
Evaluatable

Yes

Examples