A special capacitor that initially has its capacitance effectively cut into a fraction 1/faster so it can be fast-charged for an initial interval of tSwitch seconds:

            +--------+
   n1 --+---| C_fast |-----+--------------+------------+--------------- n2
        |   +--------+     |              |            |
        |                  |              |            |
     ...|..................|..............|............|...............
        |                  |              |            |
        |               +--------+        |            |
        |               | C_norm |        |            |   Lower part
        |               +--------+        |   +----+   |   only included
        |                  |              +-->|   -|x--+   if faster > 1
        |  +----+          |   +----+         | E  |
        +--| S0 |--- n3 ---+---| S1 |-- n4 --<|   +|x--+
        |  +----+              +----+         +----+   |
        |    x                   x                     |
        |    |                   |                     |
        +----|-------------------|---------------------+
             |                   |
             n5 (1-0-1)          n6 (0-1-0)

Construct with two nodes, which are assigned local variables n1 and n2. in my setup.

Switch S0 momentarily opens up, for tSwitch seconds, to keep C_norm from bogging down the charging of C_fast. During this initial interval, C_norm is supplied with as much current as needed (through switch S1, which momentarily closes during the interval) for its voltage to keep up with that across C_fast. There is an Ngspice limitation to how fast C_norm can be forced to tag along with C_fast, though: The minimum resistance of S1.

Instance Variable	C	The capacitance value. Can be an AV object.
Instance Variable	faster	The ratio of how much faster the voltage increases if fivi is set. There is no default; if you don't need faster initial charging, you don't want to use me. If faster is equal to 1, only a capacitor (perhaps with V0) will be used.
Instance Variable	tSwitch	The number of seconds in fast-charge mode before switching to regular mode.
Instance Variable	t0	The number of seconds to delay before beginning fast-charge mode (default is zero).
Instance Variable	V0	Set to an initial voltage to use the XSPICE capacitance model with an initial voltage. Fast-charging will start from there.
Method	setup	Included circuit definition.

Inherited from NodeStuff (via Include):

Instance Variable	shunts	A dict of current sensing V elements with the pairs of nodes they connect.
Class Variable	debug	A `Bag` that gets set `True` for all instances to log info about each `setup` call.
Class Method	autoName	Undocumented
Method	setupResults	Undocumented
Method	fill	Undocumented
Method	nodeCheck	Call with the circuit building tool f and a sequence of nodes provided to this `Include` or `Subcircuit`.
Method	rawNetlist	Get lines of a raw netlist from a search hierarchy of possible sources.
Method	shunt	Call to insert a current-measuring shunt and add an entry to my `Elements` baton's dict of shunts.
Method	raw	See `Elements.raw`.
Method	iNode	See `Elements.iNode`.
Method	ground	See `Elements.ground`.
Method	sca	See `Elements.sca`.
Method	sca6	See `Elements.sca6`.
Class Method	_libDir	Undocumented
Method	_strippedLines	Undocumented
Method	_call_setup	Calls my `setup` method (almost always your override of that method, actually) and processes any return value.

Inherited from NodeStuff (via Include):

Instance Variable	shunts	A dict of current sensing V elements with the pairs of nodes they connect.
Class Variable	debug	A `Bag` that gets set `True` for all instances to log info about each `setup` call.
Class Method	autoName	Undocumented
Method	setupResults	Undocumented
Method	fill	Undocumented
Method	nodeCheck	Call with the circuit building tool f and a sequence of nodes provided to this `Include` or `Subcircuit`.
Method	rawNetlist	Get lines of a raw netlist from a search hierarchy of possible sources.
Method	shunt	Call to insert a current-measuring shunt and add an entry to my `Elements` baton's dict of shunts.
Method	raw	See `Elements.raw`.
Method	iNode	See `Elements.iNode`.
Method	ground	See `Elements.ground`.
Method	sca	See `Elements.sca`.
Method	sca6	See `Elements.sca6`.
Class Method	_libDir	Undocumented
Method	_strippedLines	Undocumented
Method	_call_setup	Calls my `setup` method (almost always your override of that method, actually) and processes any return value.

C =

The capacitance value. Can be an AV object.

faster =

The ratio of how much faster the voltage increases if fivi is set. There is no default; if you don't need faster initial charging, you don't want to use me. If faster is equal to 1, only a capacitor (perhaps with V0) will be used.

tSwitch =

The number of seconds in fast-charge mode before switching to regular mode.

t0 =

The number of seconds to delay before beginning fast-charge mode (default is zero).

V0 =

Set to an initial voltage to use the XSPICE capacitance model with an initial voltage. Fast-charging will start from there.

def setup(self, f, n1, n2):

overrides pingspice.circuit.netlist.Include.setup

Included circuit definition.

Override this to define your own method for constructing part of a netlist, using the Elements object provided as f. Why use f? Because it's short and a conveniently typed letter on the keyboard.

As with Subcircuit.setup, your override method can return a dict of attribute names and values to set in my instance.

API Documentation for pingspice, generated by pydoctor at 2021-09-18 08:41:11.

pingspice.analysis.capacitance.FastChargeCap(Include) class documentation

`pingspice.analysis.capacitance.FastChargeCap(Include)` class documentation