555 OSC
GE
george.steel
·
Created Oct 1, 2026
·
Updated Oct 1, 2026

Details
Components
4
Schematic
Yes
Simulation
Interactive
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Components used
Components used
4 components
NameManufacturerMPNCountType
SPICE netlist
* **************************************************
* Generated from CircuitSim Schematic
**************************************************
C_C1 N1 0 1u IC=0
R_R1 N3 N2 1K Resistor_1d9c8cf9a__R_R1
R_R2 N2 N1 1K Resistor_1d9c8cf9a__R_R2
X_U1 0 N1 N5 N3 NC_1 N1 N2 N3 555
V_V1 N3 0 dc 5 ac 0 0 distof1 0 0 distof2 0 0
E_VP1 VP1 0 N5 0 1
**************************************************
* Models and supporting definitions follow
**************************************************
.model Resistor_1d9c8cf9a__R_R1 r(tc1=0 tc2=0 tnom=27)
.model Resistor_1d9c8cf9a__R_R2 r(tc1=0 tc2=0 tnom=27)
* Generic 555 timer wrapper for CircuitSim.
* User-facing pin order follows the standard 8-pin 555 package:
* 1 GND, 2 TRIG, 3 OUT, 4 RESET, 5 CTRL, 6 THRESH, 7 DISCH, 8 VCC
*
* The underlying TS555M macro-model includes two internal adjustment pins.
* The wrapper keeps those pins internal so schematic users see the canonical
* 8-pin timer interface.
.SUBCKT 555 GND TRIG OUT RESET CTRL THRESH DISCH VCC
X555_CORE GND TRIG OUT RESET CTRL THRESH DISCH VCC NINIT NADJ TS555M
.ENDS 555
**********
*SRC=TS555M;TS555M;Timers;SGS-Thomson;
*SYM=SGS555
* Standard Linear ICs Macromodels, 1993
* Timer
* 1 NEGATIVE POWER SUPPLY
* 2 TRIGGER
* 3 OUTPUT
* 4 RESET
* 5 CONTROL VOLTAGE
* 6 THRESHOLD
* 7 DISCHARGE
* 8 POSITIVE POWER SUPPLY
* 9 ADJUST & INITIALIZATION
*10 ADJUST
*
.SUBCKT TS555M 1 2 3 4 5 6 7 8 9 10
*
.MODEL MPJR PMOS VTO=0.0 TOX=90E-09 KP=2.0E-02 LEVEL=3
.MODEL MNJR NMOS VTO=0.0 TOX=90E-09 KP=2.0E-02 LEVEL=3
.MODEL MNDIS NMOS VTO=1.0 TOX=80E-09 KP=2.0E-02 LEVEL=3
.MODEL MDTH D N=0.7 IS=1E-08
*
RAA 8 5 1E+5
RBB 5 27 1E+5
RCC 27 1 1E+5
IALIM 8 1 94E-06
EALIM 24 1 8 1 1
* COMPA 1 *
E1H 24 41 24 4 1
D1H 32 41 MDTH
D1B 1 32 MDTH
I1 6 1 10P
G1 1 32 5 6 6E-07
* COMPA 2 *
E2H 24 42 24 4 1
D2H 22 42 MDTH
D2B 1 22 MDTH
I2 2 1 10P
G2 1 22 27 2 6E-07
* R S *
MPH 31 32 24 24 MPJR W=50U L=6U
MNB 31 22 1 1 MNJR W=100U L=6U
MP1 9 31 24 24 MPJR W=42U L=6U
MN1 9 31 1 1 MNJR W=26U L=6U
MP2 31 9 24 24 MPJR W=10U L=37U
MN2 31 9 1 1 MNJR W=9U L=40U
* RESET *
RRST 4 1 1E+12
* OUTPUT STAGE *
EOUT 15 1 9 1 1
ROUT 15 3 100
RCHOUT 3 1 1E+12
EMI 10 1 24 1 0.5
EGRILLE 11 1 24 9 1
MDIS 13 11 1 1 MNDIS W=4500U L=6U
RDIS 13 7 20
RCHDIS 7 1 1E+12
.ENDS TS555M
**************************************************
* Simulation settings
**************************************************
.tran 10n 1e12 0 10n
.save V(VP1)
.endTry this circuit yourself
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