www.kxcad.net Home > Electronic Index > Altium(Protel) Index
Model Kind
General
Model Sub-Kind
Spice Subcircuit
SPICE Prefix
X
Model Name
ABSVR
SPICE Netlist Template Format
@DESIGNATOR %1 %2 %3 %4 @MODEL
Parameters (definable at component level)
None
Notes
The content of the sub-circuit file (ABSVR.ckt) associated with this model is shown below. The formula/equation used to provide this function is declared as part of the netlist-specific entry, under the .SUBCKT line of the file.
*Absolute value of Voltage -- pkg:ABS(V)
.SUBCKT ABSVR 1 2 3 4
BX 3 4 V=ABS(V(1,2))
.ENDS ABSVR
Examples
Consider the circuit in the image above. With respect to the ABSVR component, the entries in the SPICE netlist will be:
*Schematic Netlist:
XM1 IN1 IN2 OUT 0 ABSVR
.
.
*Models and Subcircuit:
.SUBCKT ABSVR 1 2 3 4
BX 3 4 V=ABS(V(1,2))
.ENDS ABSVR
The effect of the function can be seen in the resultant waveforms obtained by running a transient analysis of the circuit:
Links
Absolute Value of Voltage (Single-Ended Input)