Version 4
SHEET 1 880 680
WIRE 352 -80 352 -112
WIRE 352 32 352 0
WIRE 352 32 176 32
WIRE 480 32 352 32
WIRE 528 32 480 32
WIRE 176 80 176 32
WIRE 352 160 352 32
WIRE 528 176 528 32
WIRE 176 208 176 160
WIRE 288 208 176 208
WIRE 176 224 176 208
WIRE 176 336 176 304
WIRE 352 336 352 256
WIRE 352 336 176 336
WIRE 528 336 528 256
WIRE 528 336 352 336
WIRE 352 368 352 336
FLAG 352 -112 0
FLAG 352 368 0
DATAFLAG 480 32 "round($*1k)/1k"
SYMBOL res 160 64 R0
SYMATTR InstName R1
SYMATTR Value 82k
SYMBOL res 160 208 R0
SYMATTR InstName R2
SYMATTR Value 20k
SYMBOL npn 288 160 R0
SYMATTR InstName Q1
SYMATTR Value BC546B
SYMBOL current 352 -80 R0
SYMATTR InstName I1
SYMATTR Value 0.5m
SYMBOL current 528 256 M180
WINDOW 0 24 88 Left 0
WINDOW 3 24 0 Left 0
WINDOW 123 24 -28 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName I2
SYMATTR Value 0
SYMATTR Value2 AC 1
TEXT 80 -112 Left 0 !.ac dec 100 1 1meg