SPICE MODEL COLLECTION

EWB Ideal Audio Transformer: (Note that Node 7 in the model is Node 12 in the schematic) .SUBCKT ts_audio_10_to_1 1 2 3 4 5 * EWB Version 4 - Transformer Model * n= 10 Le= 1e-006 Lm= 0.001 Rp= 1e-006 Rs= 1e-006 Rp 1 6 1e-006ohm Rs1 10 3 1e-006ohm Rs2 11 5 5e-007ohm Le 6 7 1e-006H Lm 7 2 0.001H E1 9 8 7 2 0.05 E2 8 4 7 2 0.05 V1 9 10 DC 0V V2 8 11 DC 0V F1 7 2 V1 0.1 F2 7 2 V2 0.1 .ENDS .SUBCKT ts_audio_100_to_1 1 2 3 4 5 * EWB Version 4 - Transformer Model * n= 100 Le= 1e-006 Lm= 0.001 Rp= 1e-006 Rs= 1e-006 Rp 1 6 1e-006ohm Rs1 10 3 1e-006ohm Rs2 11 5 5e-007ohm Le 6 7 1e-006H Lm 7 2 0.001H E1 9 8 7 2 0.005 E2 8 4 7 2 0.005 V1 9 10 DC 0V V2 8 11 DC 0V F1 7 2 V1 0.01 F2 7 2 V2 0.01 .ENDS .SUBCKT ts_audio_ideal 1 2 3 4 5 * EWB Version 4 - Transformer Model * n= 2 Le= 1e-006 Lm= 0.001 Rp= 1e-006 Rs= 1e-006 Rp 1 6 1e-006ohm Rs1 10 3 1e-006ohm Rs2 11 5 5e-007ohm Le 6 7 1e-006H Lm 7 2 0.001H E1 9 8 7 2 0.25 E2 8 4 7 2 0.25 V1 9 10 DC 0V V2 8 11 DC 0V F1 7 2 V1 0.5 F2 7 2 V2 0.5 .ENDS
Marshall Leach Audio Transformer (1) *Transformer Model Subcircuit .subckt trans p1 st1 ct st2 p2 s1 s2 R1 P1 1 "R1" L1 1 SG1 "L1" R2 SG1 2 "R2" L2 2 CT "L2" R3 CT 3 "R3" L3 3 SG2 "L3" R4 SG2 4 "R4" L4 4 P2 "L4" R5 S1 5 "R5" L5 5 S2 "L5" KALL L1 L2 L3 L4 L5 "k" .ends This is basically power transformer model. No leakage resistance or interwinding capacitance is utilized. (1) Leach, Marshall, SPICE Models for Vacuum-Tube Amplifiers, J. Audio Eng. Soc. Vol. 43, No. 3, 1995 March pp 117-126

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