Version 4
SHEET 1 880 776
WIRE -16 320 -192 320
WIRE 208 320 64 320
WIRE 400 320 208 320
WIRE -192 448 -192 320
WIRE 400 464 400 320
WIRE 208 480 208 320
WIRE -192 608 -192 528
WIRE 208 608 208 544
WIRE 400 608 400 544
FLAG -192 608 0
FLAG 208 608 0
FLAG 400 608 0
FLAG 400 320 out
FLAG -192 320 in
SYMBOL voltage -192 432 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 54 49 Left 2
WINDOW 0 47 21 Left 2
SYMATTR Value 24
SYMATTR InstName Alimentation
SYMBOL res 384 448 R0
WINDOW 0 36 40 Left 2
WINDOW 3 36 76 Left 2
SYMATTR InstName RL
SYMATTR Value 1.5K
SYMATTR SpiceLine tol=5
SYMBOL res 80 304 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName Rs
SYMATTR Value 470
SYMATTR SpiceLine tol=5
SYMBOL zener 224 544 R180
WINDOW 0 -46 56 Left 2
WINDOW 3 -141 27 Left 2
SYMATTR InstName DZ
SYMATTR Value BZX84C15L
TEXT -200 720 Left 2 !.tran 2ms