Version 4
SHEET 1 1196 680
WIRE -256 -96 -448 -96
WIRE -80 -96 -256 -96
WIRE 96 -96 -80 -96
WIRE 416 -96 192 -96
WIRE -256 -32 -256 -96
WIRE 416 0 416 -96
WIRE -448 32 -448 -96
WIRE -448 32 -512 32
WIRE -80 80 -80 -96
WIRE -256 128 -256 48
WIRE -240 128 -256 128
WIRE -144 128 -160 128
WIRE -448 144 -448 32
WIRE -80 256 -80 176
WIRE -16 256 -80 256
WIRE 112 256 112 -48
WIRE 112 256 64 256
WIRE -256 288 -256 128
WIRE 112 304 112 256
WIRE -448 416 -448 224
WIRE -256 416 -256 352
WIRE -256 416 -448 416
WIRE 112 416 112 384
WIRE 112 416 -256 416
WIRE 416 416 416 80
WIRE 416 416 112 416
WIRE -448 448 -448 416
FLAG -448 448 0
FLAG -512 32 Vin
IOPIN -512 32 In
SYMBOL voltage -448 128 R0
WINDOW 3 -308 110 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value PULSE(0 32 0.1 4 4 4 0 1)
SYMATTR InstName V1
SYMBOL res 96 288 R0
SYMATTR InstName R1
SYMATTR Value 100k
SYMBOL zener -240 352 R180
WINDOW 0 -21 73 Left 2
WINDOW 3 -131 -6 Left 2
SYMATTR InstName D1
SYMATTR Value BZX384-B20
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 400 -16 R0
SYMATTR InstName Rload
SYMATTR Value {Rload}
SYMBOL pmos 192 -48 M270
WINDOW 0 -16 58 VLeft 2
WINDOW 3 -47 56 VLeft 2
SYMATTR InstName M1
SYMATTR Value 2SJ339_fake
SYMBOL res -272 -48 R0
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL res -144 112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 100k
SYMBOL pnp -144 176 M180
SYMATTR InstName Q1
SYMATTR Value BC556B
SYMBOL res 80 240 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 330
TEXT -400 456 Left 2 !.tran 0 15 0.1 startup
TEXT 120 456 Left 2 !.step param Rload list  4 8 16 32 64 128 256