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<< Click to Display Table of Contents >> Navigation: Designing a PCB with DEX > Projects > Circuit Simulation > The Spice Reference Manual > Circuit Description > Circuit Elements and Models > Voltage and Current Sources > Independent Sources > Exponential |
General Form:
EXP(V1 V2 TD1 TAU1 TD2 TAU2)
Examples:
VIN 3 0 EXP(-4 -1 2NS 30NS 60NS 40NS)
parameter |
default value |
units |
V1 (initial value) |
- |
Volts or Amps |
V2 (pulsed value) |
- |
Volts or Amps |
TD1 (rise delay time) |
0 |
seconds |
TAU1 (rise time constant) |
TSTEP |
seconds |
TD2 (fall delay time) |
TD1+TSTEP |
seconds |
TAU2 (fall time) |
TSTEP |
seconds |
The shape of the waveform is described by the following table:
time |
value |
0 to TD1 |
V1 |
TD1 to TD2 |
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TD2 to TSTOP |
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