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Description of parameter 'perlim'.

This commit is contained in:
Holger Vogt 2025-05-27 13:34:23 +02:00
parent f247d1e2ce
commit 8e7c15a01a
1 changed files with 22 additions and 4 deletions
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26
README.SEEgenerator
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@ -44,6 +44,7 @@ Vector: no no
Vector_Bounds: - - Vector_Bounds: - -
Null_Allowed: yes yes Null_Allowed: yes yes
PARAMETER_TABLE: PARAMETER_TABLE:
Parameter_Name: tperiod ctrlthres Parameter_Name: tperiod ctrlthres
@ -55,6 +56,19 @@ Vector: no no
Vector_Bounds: - - Vector_Bounds: - -
Null_Allowed: yes yes Null_Allowed: yes yes
PARAMETER_TABLE:
Parameter_Name: perlim
Description: "pulse repetition limited"
Data_Type: boolean
Default_Value: TRUE
Limits: -
Vector: no
Vector_Bounds: -
Null_Allowed: yes
STATIC_VAR_TABLE: STATIC_VAR_TABLE:
Static_Var_Name: last_t_value Static_Var_Name: last_t_value
@ -82,9 +96,13 @@ i(t) = inull * (exp(-(t-tdelay)/talpha) - (exp(-(t-tdelay)/tbeta) for t > tdelay
i(t) = 0 for t < tdelay i(t) = 0 for t < tdelay
Minimum is one pulse output (a node pair, or a single node with the other grounded). Minimum is one pulse output (a node pair, or a single node with the other grounded).
Several output node pairs may be defined per code model instance. Parameter tperiod Several output node pairs may be defined per code model instance. Parameter tperiod
may then be used to create pulses in sequence. The first pulse is issued in the first may then be used to create pulses in sequence. Per default only one sequence is running.
node pair of the node list in the vector [], the second (after time tperiod has elapsed), is injected by the Parameter perlim, set to FALSE, allows running and repeating the sequence until
second node (pair) of the list and so on. The control input ctrl (voltage or current) may be used the end of the simulation. The first pulse is issued in the first
node pair of the node list in the vector [], the second (after time tperiod has elapsed),
is injected by the second node (pair) of the list and so on. When the sequence is repeated,
again the output starts pulsing at port (node pair) number 1.
The control input ctrl (voltage or current) may be used
to start or repeat the whole sequence, depending on the circuit status. A rising voltage to start or repeat the whole sequence, depending on the circuit status. A rising voltage
at ctrl, when crossing the threshold given by ctrlthres, will initiate the sequence (including at ctrl, when crossing the threshold given by ctrlthres, will initiate the sequence (including
tdelay and tperiod). tdelay and tperiod).
@ -99,4 +117,4 @@ aseegen1 ctrl [%id(n1 m1) %id(n2 m2) %id(n1 m1) %id(n2 m2)] seemod1
Example ngspice usage (without control, parameters as offered by default) Example ngspice usage (without control, parameters as offered by default)
aseegen2 NULL [%id(n1 m1) %id(n5 n6) %id(n6 n7) %i(isingle) ] seemod2 aseegen2 NULL [%id(n1 m1) %id(n5 n6) %id(n6 n7) %i(isingle) ] seemod2
.model seemod2 seegen (tdelay = 0 tperiod=0 ctrlthres=0.5 inull=200u talpha=500p tbeta=20p) .model seemod2 seegen (tdelay = 0 tperiod=0 ctrlthres=0.5 inull=200u talpha=500p tbeta=20p perlim=FALSE)