Version 4 SHEET 1 880 680 WIRE -96 112 -176 112 WIRE 32 112 -96 112 WIRE 384 112 288 112 WIRE 512 112 384 112 WIRE 576 112 512 112 WIRE 624 112 576 112 WIRE 720 112 624 112 WIRE -176 144 -176 112 WIRE 384 144 384 112 WIRE 512 144 512 112 WIRE 720 144 720 112 WIRE 624 160 624 112 WIRE -176 256 -176 224 WIRE 160 256 160 208 WIRE 384 256 384 224 WIRE 384 256 160 256 WIRE 624 256 624 224 WIRE 720 256 720 224 WIRE 384 304 384 256 WIRE 384 416 384 384 WIRE 512 416 512 224 WIRE 384 528 384 496 WIRE 512 528 512 496 FLAG 624 256 0 FLAG 720 256 0 FLAG 384 528 0 FLAG -176 256 0 FLAG 576 112 out FLAG -96 112 in FLAG 512 528 0 SYMBOL PowerProducts\\LT1083 160 112 R0 SYMATTR InstName U1 SYMBOL Misc\\EuropeanResistor 704 128 R0 SYMATTR InstName R2 SYMATTR Value 1.5k SYMBOL Misc\\EuropeanResistor 368 128 R0 SYMATTR InstName R3 SYMATTR Value 750 SYMBOL Misc\\EuropeanResistor 368 288 R0 SYMATTR InstName R4 SYMATTR Value {RP} SYMBOL Misc\\EuropeanPolcap 608 160 R0 SYMATTR InstName C2 SYMATTR Value 100µ SYMBOL voltage 384 400 R0 SYMATTR InstName V1 SYMATTR Value -1.25V SYMBOL voltage -176 128 R0 SYMATTR InstName V2 SYMATTR Value 12 SYMBOL Misc\\EuropeanResistor 496 128 R0 SYMATTR InstName R1 SYMATTR Value 2.2k SYMBOL voltage 512 400 R0 SYMATTR InstName V3 SYMATTR Value -12 TEXT -176 -48 Left 2 !.op TEXT -176 -16 Left 2 !.step param RP 1 5k 100 TEXT 536 360 Left 2 ;Minimum Load 5mA TEXT 680 72 Left 2 ;0V to 8V