Electric Guitar Pickup SPICE Model (w/Sig. Gen.)

[pweaudiotech]

I have designed a simple Electric Guitar SPICE Subcircuit that includes a Signal Generator 440Hz Sine Wave Output at 100mv. The Parameter "440" is the Frequency (440Hz) and the Parameter "100M" is the Voltage (100mv) in the "+ SIN( 0 100M 440 0 0 0 )" line of the Subcircuit and these values can be modiifed to vary the Frequency and Voltage of the Output. The Windings Inductance of the Pickup is 2 Henries (L1), the Pickup DC Resistance is 10,000 Ohms (R1) and the Capacitance is 120 picofarads (C1). Since there are only two connections (+ = 1 and GND = 2) any simple 2 connection Schematic Symbol may be used.

*Electric Guitar Pickup SPICE Subcircuit
*
*Connections: + GND
.SUBCKT GUITPKUP 1 2
VG1 2 1 DC 0 AC 1 0
+ SIN( 0 100M 440 0 0 0 )
C1 3 1 120P
R1 4 2 10K
L1 3 4 2
.ENDS

[pweaudiotech]

Here are two more advanced versions of Electric Guitar Pickup Spice with Signal Generator:

*Electric Guitar Pickup with 250kOhm Volume Control SPICE Subcircuit
*
*VG1=Sine Wave Generator (100mV P-P 440Hz)
*XP1=Volume Control (250kOhms 50 Percent Maximum)
*C1=Pickup Capacitance (120pF)
*R1=Pickup Resistance (10kOhms)
*L1=Pickup Inductance (2.5H)
*
*Connections: OUT GND
.SUBCKT PKUPWVOL 1 2
VG1 4 1 DC 0 AC 1 0
+ SIN( 0 100M 440 0 0 0 )
XP1 1 3 2 PotMeter PARAMS: Res=250K Percent=500M
C1 1 3 120P
R1 5 4 10K
L1 3 5 2.5
.ENDS

*Electric Guitar Pickup with 250kOhm Volume and Tone Controls SPICE Subcircuit
*
*VG1=Sine Wave Generator (100mV P-P 440Hz)
*XP1=Volume Control (250kOhms 50 Percent Maximum)
*XP2=Tone Control (250kOhms 50 Percent Maximum)
*C1=Pickup Capacitance (120pF)
*C2=Tone Capacitor (.05uF)
*C3=Output Capacitor (.001uF)
*R1=Pickup Resistance (10kOhms)
*L1=Pickup Inductance (3H)
*
*Connections: OUT GND
.SUBCKT EGUITAR 1 2
VG1 6 1 DC 0 AC 1 0
+ SIN( 0 100M 440 0 0 0 )
C3 3 2 1N
XP2 4 5 5 PotMeter PARAMS: Res=250K Percent=500M
C2 4 1 50N
XP1 1 5 3 PotMeter PARAMS: Res=250K Percent=500M
C1 5 1 120P
R1 7 6 10K
L1 5 7 3
.ENDS

[pweaudiotech]

These are the most recent modified and improved versions of my Original Electric Guitar with Signal Generator SPICE Subcircuits:
*
*Electric Guitar Pickup with Signal Generator SPICE Subcircuits
*
*VG1=Sine Wave Generator (100mV P-P 440Hz)
*XP1=Volume Control (250kOhms 99 Percent Maximum)
*XP2=Tone Control (250kOhms 99 Percent Maximum)
*C1=Pickup Capacitance (120pF)
*C2=Tone Capacitor (.022uF)
*R1=Pickup Resistance (10kOhms)
*L1=Pickup Inductance (2.5H)
*
*
*Connections:*** OUT
************** | GND
************** | |
.SUBCKT GUITPKUP 1 2
VG1 3 2 DC 0 AC 1 0
+ SIN( 0 100M 440 0 0 0 )
C1 1 2 120P
R1 4 3 10K
L1 1 4 2.5
.ENDS
*
*
*
*Connections:**** OUT
*************** | GND
*************** | |
.SUBCKT PKUPWVOL 1 2
VG1 4 2 DC 0 AC 1 0
+ SIN( 0 100M 440 0 0 0 )
XP1 2 3 1 PotMeter PARAMS: Res=250K Percent=990M
C1 3 2 120P
R1 5 4 10K
L1 3 5 2.5
.ENDS
*
*
*
*Connections:** OUT
************* | GND
************* | |
.SUBCKT EGUITAR 1 2
VG1 5 2 DC 0 AC 1 0
+ SIN( 0 100M 440 0 0 0 )
C2 1 2 22N
XP2 1 4 1 PotMeter PARAMS: Res=250K Percent=990M
XP1 2 4 3 PotMeter PARAMS: Res=250K Percent=990M
C1 4 2 120P
R1 6 5 10K
L1 4 6 2.5
.ENDS

[pweaudiotech]

IMPORTANT! DISREGARD THE PREVIOUS SUBCIRCUITS AND UTILIZE ONLY THE FOLLOWING:
NOTE: CHANGING VG1 PARAMETER SET: + SIN( 0 100M 1K 0 0 0 ) INCREASES THE SIGNAL GENERATOR TO 1 kHz TO IMPROVE TONE CONTROL RESPONSE FOR SIMULATION.
*
*Electric Guitar Pickup with Signal Generator SPICE Subcircuits
*
*VG1=Sine Wave Generator (100mV P-P 440Hz)
*XP1=Volume Control (250kOhms 99 Percent Maximum)
*XP2=Tone Control (250kOhms 99 Percent Maximum)
*C1=Pickup Capacitance (120pF)
*C2=Tone Capacitor (.022uF)
*R1=Pickup Resistance (10kOhms)
*L1=Pickup Inductance (2.5H)
*
*
*Connections:*** OUT
************** | GND
************** | |
.SUBCKT GUITPKUP 1 2
VG1 3 2 DC 0 AC 1 0
+ SIN( 0 100M 440 0 0 0 )
C1 1 2 120P
R1 4 3 10K
L1 1 4 2.5
.ENDS
*
*
*
*Connections:**** OUT
*************** | GND
*************** | |
.SUBCKT PKUPWVOL 1 2
VG1 4 2 DC 0 AC 1 0
+ SIN( 0 100M 440 0 0 0 )
XP1 2 3 1 PotMeter PARAMS: Res=250K Percent=990M
C1 3 2 120P
R1 5 4 10K
L1 3 5 2.5
.ENDS
*
*
*
*Connections:** OUT
************* | GND
************* | |
.SUBCKT EGUITAR 1 2
VG1 5 1 DC 0 AC 1 0
+ SIN( 0 100M 440 0 0 0 )
XP2 3 4 4 PotMeter PARAMS: Res=250K Percent=990M
C2 4 1 22N
XP1 1 3 2 PotMeter PARAMS: Res=250K Percent=990M
C1 3 1 120P
R1 6 5 10K
L1 3 6 2.5
.ENDS
*
*
*
NOTE: CHANGING VG1 PARAMETER SET TO: + SIN( 0 100M 1K 0 0 0 ) INCREASES THE SIGNAL GENERATOR TO 1 kHz TO IMPROVE TONE CONTROL RESPONSE FOR SIMULATION.
*
*
*
*Connections:** OUT
************* | GND
************* | |
.SUBCKT EGUITAR 1 2
VG1 5 1 DC 0 AC 1 0
+ SIN( 0 100M 1K 0 0 0 )
XP2 3 4 4 PotMeter PARAMS: Res=250K Percent=990M
C2 4 1 22N
XP1 1 3 2 PotMeter PARAMS: Res=250K Percent=990M
C1 3 1 120P
R1 6 5 10K
L1 3 6 2.5
.ENDS

[pweaudiotech]

Here are the Schematic Equivalents of the 3 Electric Guitar with Signal Generator SPICE Subcircuits: GUITPKUP.CIR, PKUPWVOL.CIR and EGUITAR.CIR
NOTE: If you design same yourself and Export a NETLIST the 'Node Numbers' may vary from those shown...Node Numbering and Order is dependent upon sequential placement of components and connections to same on a Schematic. This should not adversely affect you Subcircuit (.CIR) File.



*Electric Guitar Pickup with Signal Generator SPICE Subcircuits
*
*VG1=Sine Wave Generator (100mV P-P 440Hz)
*XP1=Volume Control (250kOhms 99 Percent Maximum)
*XP2=Tone Control (250kOhms 99 Percent Maximum)
*C1=Pickup Capacitance (120pF)
*C2=Tone Capacitor (.022uF)
*R1=Pickup Resistance (10kOhms)
*L1=Pickup Inductance (2.5H)
*
*
*Connections:****OUT
************** | GND
************** | |
.SUBCKT GUITPKUP 1 2
VG1 3 2 DC 0 AC 1 0
+ SIN( 0 100M 440 0 0 0 )
C1 1 2 120P
R1 4 3 10K
L1 1 4 2.5
.ENDS
*
*
*
*Connections:*****OUT
*************** | GND
*************** | |
.SUBCKT PKUPWVOL 1 2
VG1 4 2 DC 0 AC 1 0
+ SIN( 0 100M 440 0 0 0 )
XP1 2 3 1 PotMeter PARAMS: Res=250K Percent=990M
C1 3 2 120P
R1 5 4 10K
L1 3 5 2.5
.ENDS
*
*
*
*Connections:***OUT
**************| GND
**************| |
.SUBCKT EGUITAR 1 2
VG1 5 1 DC 0 AC 1 0
+ SIN( 0 100M 440 0 0 0 )
XP2 3 4 4 PotMeter PARAMS: Res=250K Percent=990M
C2 4 1 22N
XP1 1 3 2 PotMeter PARAMS: Res=250K Percent=990M
C1 3 1 120P
R1 6 5 10K
L1 3 6 2.5
.ENDS
*
*
*
NOTE: CHANGING VG1 PARAMETER SET TO: + SIN( 0 100M 1K 0 0 0 ) INCREASES THE SIGNAL GENERATOR TO 1 kHz TO IMPROVE TONE CONTROL RESPONSE FOR SIMULATION.
*
*
*
*Connections:***OUT
**************| GND
**************| |
.SUBCKT EGUITAR 1 2
VG1 5 1 DC 0 AC 1 0
+ SIN( 0 100M 1K 0 0 0 )
XP2 3 4 4 PotMeter PARAMS: Res=250K Percent=990M
C2 4 1 22N
XP1 1 3 2 PotMeter PARAMS: Res=250K Percent=990M
C1 3 1 120P
R1 6 5 10K
L1 3 6 2.5
.ENDS

[pweaudiotech]

Here are the Schematic Equivalents of the 3 Electric Guitar with Signal Generator SPICE Subcircuits: GUITPKUP.CIR, PKUPWVOL.CIR and EGUITAR.CIR
NOTE: If you design same yourself with a typical Electronics SPICE Program and Export a NETLIST the 'Node Numbers' may vary from those shown...Node Numbering and Order is dependent upon sequential placement of components and connections to same on a Schematic. This should not adversely affect your Subcircuit (.CIR) File. These Subcircuits are designed with only two connections for a 'Macro' consisting of OUT' and 'GND' to simplify 'Macro' and Schematic Symbol Design.



*Electric Guitar Pickup with Signal Generator SPICE Subcircuits
*
*VG1=Sine Wave Generator (100mV P-P 440Hz)
*XP1=Volume Control (250kOhms 99 Percent Maximum)
*XP2=Tone Control (250kOhms 99 Percent Maximum)
*C1=Pickup Capacitance (120pF)
*C2=Tone Capacitor (.022uF)
*R1=Pickup Resistance (10kOhms)
*L1=Pickup Inductance (2.5H)
*
*
*Connections:****OUT
************** | GND
************** | |
.SUBCKT GUITPKUP 1 2
VG1 3 2 DC 0 AC 1 0
+ SIN( 0 100M 440 0 0 0 )
C1 1 2 120P
R1 4 3 10K
L1 1 4 2.5
.ENDS
*
*
*
*Connections:*****OUT
*************** | GND
*************** | |
.SUBCKT PKUPWVOL 1 2
VG1 4 2 DC 0 AC 1 0
+ SIN( 0 100M 440 0 0 0 )
XP1 2 3 1 PotMeter PARAMS: Res=250K Percent=990M
C1 3 2 120P
R1 5 4 10K
L1 3 5 2.5
.ENDS
*
*
*
*Connections:***OUT
**************| GND
**************| |
.SUBCKT EGUITAR 1 2
VG1 5 1 DC 0 AC 1 0
+ SIN( 0 100M 440 0 0 0 )
XP2 3 4 4 PotMeter PARAMS: Res=250K Percent=990M
C2 4 1 22N
XP1 1 3 2 PotMeter PARAMS: Res=250K Percent=990M
C1 3 1 120P
R1 6 5 10K
L1 3 6 2.5
.ENDS
*
*
*
NOTE: CHANGING VG1 PARAMETER SET TO: + SIN( 0 100M 1K 0 0 0 ) INCREASES THE SIGNAL GENERATOR TO 1 kHz TO IMPROVE TONE CONTROL RESPONSE FOR SIMULATION.
*
*
*
*Connections:***OUT
**************| GND
**************| |
.SUBCKT EGUITAR 1 2
VG1 5 1 DC 0 AC 1 0
+ SIN( 0 100M 1K 0 0 0 )
XP2 3 4 4 PotMeter PARAMS: Res=250K Percent=990M
C2 4 1 22N
XP1 1 3 2 PotMeter PARAMS: Res=250K Percent=990M
C1 3 1 120P
R1 6 5 10K
L1 3 6 2.5
.ENDS

[pweaudiotech]

These Schematic Diagram Versions of Electric Guitar Single Pickup Configurations are more accurate:



The following is more accurate also and is more readily converted to SPICE Macros that can be utilized as the Potentiometers have been replaced by the simple voltage dividers as shown:

*ELECTRIC GUITAR PICKUP (WITH SIGNAL GENERATOR) SPICE LIBRARY
*by Paul William Engholm
*
*
*
*Electric Guitar Pickup SPICE Subcircuit
*
*VG1=Sine Wave Generator (100mV P-P 440Hz)
*C1=Pickup Capacitance (120pF)
*R1=Pickup Resistance (10kOhms)
*L1=Pickup Inductance (2.5H)
*
*Connections:****OUT
************** | GND
************** | |
.SUBCKT GUITPKUP 1 2
VG1 3 2 SIN(0 0.1 1K)
C1 1 2 120P
R1 4 3 10K
L1 1 4 2.5H
.ENDS
*
*
*
*Electric Guitar Pickup with 250kOhm Volume Control SPICE Subcircuit
*
*VG1=Sine Wave Generator (100mV P-P 1 kHz)
*R3-R2=250kOhms Volume Control (Voltage Divider set to 99 Percent Maximum)
*C1=Pickup Capacitance (120pF)
*R1=Pickup Resistance (10kOhms)
*L1=Pickup Inductance (2.5H)
*
*Connections:****OUT
*************** | GND
*************** | |
.SUBCKT PKUPWVOL 1 2
VG1 4 2 SIN(0 0.1 1K)
R3 1 2 247.5K
R2 3 1 2.5K
C1 3 2 120P
R1 5 4 10K
L1 3 5 2.5H
.ENDS
*
*
*
*Electric Guitar Pickup with 250kOhm Volume and Tone Controls SPICE Subcircuit
*
*VG1=Sine Wave Generator (100mV P-P 440 Hz)
*R3-R2=250kOhms Tone Control (Voltage Divider set to 99 Percent Maximum)
*R5-R4=250kOhms Volume Control (Voltage Divider set to 99 Percent Maximum)
*C1=Pickup Capacitance (120pF)
*C2=Tone Capacitor (.022uF)
*R1=Pickup Resistance (10kOhms)
*L1=Pickup Inductance (2.5H)
*
*Connections:***OUT
************* | GND
************* | |
.SUBCKT EGUITAR 1 2
VG1 6 3 SIN(0 0.1 1K)
R5 2 3 247.5K
R4 4 2 2.5K
R2 5 1 2.5K
R3 4 5 247.5K
C2 5 3 22N
C1 4 3 120P
R1 7 6 10K
L1 4 7 2.5H
.ENDS

[AUDIODH]

Why would you??? Spice can't do that well at a real simulation, it doesn't have enough variables. IMHO
-Dave

[Keriwena]

Paul, which pickup are you modeling?

Dave, I agree there are variables lacking, for instance no one has yet come up with a way to model the change from an A2 magnet to an A5, but Paul's model (which is the same as Terry Down's model*) manages to model volume and tone control changes accurately enough to be useful.


*Note that Terry's model uses a transmission line for the guitar cord, which works to prove his point, but does not work for, say, modeling treble bypass circuits. A simple capacitor does the trick.

[AUDIODH]

Well, really my not understanding the point of the model is really the question - maybe I missed something before this post.
I have designed guitar amps, and Pro Audio circuits for years. The variables I'm speaking of are the things manufacturers of pickups and guitars can't even duplicate with todays manufacturing technology. (Ever wonder why say three xyz brand guitars, out of the box, each sound different?)
Additionally, in the case of amplified guitasr, variables such as load, (as you said cable capacitance), Amp/pedal input Z, electro-acoustic feedback, strings age and gauge, pole adjustment...etc. seem to make a model it pretty useless, unless it's for a class project.
I've done my share of PSpice, and other modeling programs - but still I ask - why would you model a pickup?
I'm not trying to bust chops here, just trying to understand the point...
Thanks,
Dave