Version 4
SHEET 1 1304 1032
WIRE -176 192 -352 192
WIRE -64 192 -176 192
WIRE 304 192 192 192
WIRE 448 192 304 192
WIRE 576 192 448 192
WIRE 640 192 576 192
WIRE -352 224 -352 192
WIRE 448 224 448 192
WIRE 576 224 576 192
WIRE -176 240 -176 192
WIRE 304 240 304 192
WIRE -352 352 -352 304
WIRE -176 352 -176 304
WIRE 64 352 64 288
WIRE 304 352 304 304
WIRE 448 352 448 304
WIRE 576 352 576 304
WIRE -176 512 -352 512
WIRE -64 512 -176 512
WIRE 304 512 192 512
WIRE 448 512 304 512
WIRE 576 512 448 512
WIRE 640 512 576 512
WIRE -352 544 -352 512
WIRE 448 544 448 512
WIRE 576 544 576 512
WIRE -176 560 -176 512
WIRE 304 560 304 512
WIRE -352 672 -352 624
WIRE -176 672 -176 624
WIRE 64 672 64 608
WIRE 304 672 304 624
WIRE 448 672 448 624
WIRE 576 672 576 624
WIRE -176 832 -352 832
WIRE -64 832 -176 832
WIRE 304 832 192 832
WIRE 448 832 304 832
WIRE 576 832 448 832
WIRE 640 832 576 832
WIRE -352 864 -352 832
WIRE 448 864 448 832
WIRE 576 864 576 832
WIRE -176 880 -176 832
WIRE 304 880 304 832
WIRE -352 992 -352 944
WIRE -176 992 -176 944
WIRE 64 992 64 928
WIRE 304 992 304 944
WIRE 448 992 448 944
WIRE 576 992 576 944
FLAG 64 352 0
FLAG 304 352 0
FLAG -176 352 0
FLAG -352 352 0
FLAG 448 352 0
FLAG 576 352 0
FLAG 64 672 0
FLAG 304 672 0
FLAG -176 672 0
FLAG -352 672 0
FLAG 448 672 0
FLAG 576 672 0
FLAG 640 512 -12V
IOPIN 640 512 Out
FLAG 640 192 -5V
IOPIN 640 192 Out
FLAG 64 992 0
FLAG 304 992 0
FLAG -176 992 0
FLAG -352 992 0
FLAG 448 992 0
FLAG 576 992 0
FLAG 640 832 -15V
IOPIN 640 832 Out
SYMBOL xreg 64 192 R0
SYMATTR InstName U1
SYMATTR SpiceModel LM7905
SYMBOL polcap 320 304 R180
WINDOW 0 2 57 Right 0
WINDOW 3 1 4 Right 0
WINDOW 39 1 -24 Right 0
SYMATTR InstName C1
SYMATTR Value 10µ
SYMATTR SpiceLine Rser=0.2
SYMBOL polcap -160 304 R180
WINDOW 0 -1 56 Right 0
WINDOW 3 5 6 Right 0
WINDOW 39 5 -22 Right 0
SYMATTR InstName C2
SYMATTR Value 10µ
SYMATTR SpiceLine Rser=0.2
SYMBOL voltage -352 208 R0
WINDOW 3 24 96 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 24 132 Left 0
SYMATTR Value -10
SYMATTR SpiceLine Rser=1
SYMATTR InstName V1
SYMBOL res 432 208 R0
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL current 576 304 R180
WINDOW 0 44 88 Right 0
WINDOW 3 -32 -16 Right 0
WINDOW 123 0 0 Left 0
WINDOW 39 -34 -47 Right 0
SYMATTR InstName I1
SYMATTR Value PULSE(0.01 0.51 1m 0.1u 0.1u 5m 10m)
SYMATTR SpiceLine load
SYMBOL xreg 64 512 R0
SYMATTR InstName U2
SYMATTR SpiceModel LM7912
SYMBOL polcap 320 624 R180
WINDOW 0 2 57 Right 0
WINDOW 3 1 4 Right 0
WINDOW 39 1 -24 Right 0
SYMATTR InstName C3
SYMATTR Value 10µ
SYMATTR SpiceLine Rser=0.2
SYMBOL polcap -160 624 R180
WINDOW 0 -1 56 Right 0
WINDOW 3 5 6 Right 0
WINDOW 39 5 -22 Right 0
SYMATTR InstName C4
SYMATTR Value 10µ
SYMATTR SpiceLine Rser=0.2
SYMBOL voltage -352 528 R0
WINDOW 3 24 96 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 24 132 Left 0
SYMATTR Value -17
SYMATTR SpiceLine Rser=1
SYMATTR InstName V2
SYMBOL res 432 528 R0
SYMATTR InstName R2
SYMATTR Value 1k
SYMBOL current 576 624 R180
WINDOW 0 44 88 Right 0
WINDOW 3 -32 -16 Right 0
WINDOW 123 0 0 Left 0
WINDOW 39 -34 -47 Right 0
SYMATTR InstName I2
SYMATTR Value PULSE(0.01 0.51 1m 0.1u 0.1u 5m 10m)
SYMATTR SpiceLine load
SYMBOL xreg 64 832 R0
SYMATTR InstName U3
SYMATTR SpiceModel LM7915
SYMBOL polcap 320 944 R180
WINDOW 0 2 57 Right 0
WINDOW 3 1 4 Right 0
WINDOW 39 1 -24 Right 0
SYMATTR InstName C5
SYMATTR Value 10µ
SYMATTR SpiceLine Rser=0.2
SYMBOL polcap -160 944 R180
WINDOW 0 -1 56 Right 0
WINDOW 3 5 6 Right 0
WINDOW 39 5 -22 Right 0
SYMATTR InstName C6
SYMATTR Value 10µ
SYMATTR SpiceLine Rser=0.2
SYMBOL voltage -352 848 R0
WINDOW 3 24 96 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 24 132 Left 0
SYMATTR Value -20
SYMATTR SpiceLine Rser=1
SYMATTR InstName V3
SYMBOL res 432 848 R0
SYMATTR InstName R3
SYMATTR Value 1k
SYMBOL current 576 944 R180
WINDOW 0 44 88 Right 0
WINDOW 3 -32 -16 Right 0
WINDOW 123 0 0 Left 0
WINDOW 39 -34 -47 Right 0
SYMATTR InstName I3
SYMATTR Value PULSE(0.01 0.51 1m 0.1u 0.1u 5m 10m)
SYMATTR SpiceLine load
TEXT -352 -88 Left 0 !.tran 15m
TEXT 24 -88 Left 0 ;* The models here are just modifications of a general 7905 model\n* uploaded to this group (regulators.lib). The strange thing is that it has had -5.32V.\n* Only one resistor has been changed for each type to achieve the desired output voltage.\n* Finally I cannot guarantee for the quality of these models because I don't know about \n* the performance of the original 7905 model. H.S.