50% astable with 555, (ECEN4618, Lab 0)
*
* include reference to the 4618 library of device models
.lib 4618.lib
.options itl5=0 itl1=500

Vcc 8 0 15
Rt 3 6 18.2k
Ct 6 0 1n
* Note: the PSpice library model is for the CMOS version of 555
* so the pull-up resistor is not required
* Rpullup 8 3 1k
Rdummy 8 7 100k
* This calls the library model:
X1 0 6 3 8 5 6 7 8 555
C2 5 0 0.01u
.tran 1n 100u
.probe
.end