Version 4
SHEET 1 1304 680
WIRE -128 -32 -288 -32
WIRE 272 -32 112 -32
WIRE 768 -32 496 -32
WIRE -128 0 -128 -32
WIRE 272 0 272 -32
WIRE 768 0 768 -32
WIRE -288 16 -288 -32
WIRE 112 16 112 -32
WIRE 496 16 496 -32
WIRE -176 64 -192 64
WIRE 224 64 208 64
WIRE 720 64 688 64
WIRE -192 128 -192 64
WIRE -128 128 -128 96
WIRE -128 128 -192 128
WIRE 208 128 208 64
WIRE 272 128 272 96
WIRE 272 128 208 128
WIRE 768 128 768 96
WIRE -288 160 -288 96
WIRE -128 160 -128 128
WIRE 112 160 112 96
WIRE 272 160 272 128
WIRE 496 160 496 96
WIRE -288 256 -288 240
WIRE -128 256 -128 224
WIRE -128 256 -288 256
WIRE 112 256 112 240
WIRE 272 256 272 224
WIRE 272 256 112 256
WIRE 496 256 496 240
WIRE 576 256 496 256
WIRE 688 256 688 64
WIRE 688 256 640 256
WIRE 768 256 768 208
WIRE 768 256 688 256
WIRE -128 288 -128 256
WIRE 272 288 272 256
WIRE 496 288 496 256
FLAG -128 288 0
FLAG 272 288 0
FLAG 496 288 0
SYMBOL njf -176 0 R0
SYMATTR InstName J1
SYMATTR Value 2N3819
SYMBOL voltage -288 0 R0
WINDOW 0 -36 108 Left 0
WINDOW 3 -149 -8 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value PULSE(-.5 .5 0 .1 .1 0 .2 5)
SYMBOL voltage -288 144 R0
WINDOW 0 -38 102 Left 0
WINDOW 3 45 53 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 3.7
SYMBOL LED -144 160 R0
SYMATTR InstName D1
SYMATTR Value NSPW500BS
SYMBOL njf 224 0 R0
SYMATTR InstName J2
SYMATTR Value 2N3819
SYMBOL voltage 112 0 R0
WINDOW 0 -35 102 Left 0
WINDOW 3 -134 -12 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value PULSE(-.5 15 0 .1 .1 0 .2 5)
SYMBOL voltage 112 144 R0
WINDOW 0 -34 98 Left 0
WINDOW 3 37 52 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V4
SYMATTR Value 3.7
SYMBOL LED 256 160 R0
SYMATTR InstName D2
SYMATTR Value NSPW500BS
SYMBOL njf 720 0 R0
SYMATTR InstName J3
SYMATTR Value 2N3819
SYMBOL voltage 496 0 R0
WINDOW 0 -35 102 Left 0
WINDOW 3 -134 -12 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V5
SYMATTR Value PULSE(-.5 15 0 .1 .1 0 .2 5)
SYMBOL voltage 496 144 R0
WINDOW 0 -34 98 Left 0
WINDOW 3 37 52 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V6
SYMATTR Value 3.7
SYMBOL LED 640 240 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 72 32 VTop 0
SYMATTR InstName D3
SYMATTR Value NSPW500BS
SYMBOL res 752 112 R0
SYMATTR InstName R1
SYMATTR Value 180
TEXT -88 312 Left 0 !.tran 0 1 0
TEXT -136 -88 Left 0 !.step temp -25 125 25