Version 4
SHEET 1 1756 912
WIRE -1216 64 -1344 64
WIRE -1088 64 -1216 64
WIRE -848 64 -1088 64
WIRE -784 64 -848 64
WIRE -640 64 -704 64
WIRE -528 64 -640 64
WIRE 144 64 -528 64
WIRE -1088 112 -1088 64
WIRE -848 112 -848 64
WIRE -640 112 -640 64
WIRE -528 112 -528 64
WIRE 144 144 144 64
WIRE 176 144 144 144
WIRE 272 144 240 144
WIRE 320 144 272 144
WIRE -528 208 -528 192
WIRE -640 256 -640 192
WIRE -592 256 -640 256
WIRE 144 256 144 144
WIRE 272 256 272 144
WIRE -640 288 -640 256
WIRE -1088 336 -1088 192
WIRE -1056 336 -1088 336
WIRE -944 336 -976 336
WIRE -848 336 -848 192
WIRE -848 336 -880 336
WIRE -704 336 -848 336
WIRE -1088 416 -1088 336
WIRE -848 416 -848 336
WIRE -640 416 -640 384
WIRE -528 416 -528 304
WIRE -1344 432 -1344 64
WIRE -1216 432 -1216 64
WIRE 144 432 144 336
WIRE -1344 544 -1344 496
WIRE -1216 544 -1216 496
WIRE -1216 544 -1344 544
WIRE -1088 544 -1088 496
WIRE -1088 544 -1216 544
WIRE -848 544 -848 496
WIRE -848 544 -1088 544
WIRE -640 544 -640 496
WIRE -640 544 -848 544
WIRE -528 544 -528 496
WIRE -528 544 -640 544
WIRE 144 544 144 512
WIRE 144 544 -528 544
WIRE 272 544 272 336
WIRE 272 544 144 544
WIRE 144 576 144 544
FLAG 144 576 0
FLAG 320 144 NF-o
SYMBOL res -656 400 R0
SYMATTR InstName R6
SYMATTR Value 470
SYMBOL res -656 96 R0
SYMATTR InstName R5
SYMATTR Value 4k7
SYMBOL res -1104 96 R0
SYMATTR InstName R1
SYMATTR Value 4k7
SYMBOL res -864 400 R0
SYMATTR InstName R3
SYMATTR Value 33k
SYMBOL cap -880 320 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 100n
SYMBOL res -960 320 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName Ri
SYMATTR Value 2k5
SYMBOL Misc\\signal -1088 400 R0
WINDOW 123 24 132 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value2 AC 1
SYMATTR InstName V1
SYMATTR Value SINE(1.5 20m 1K)
SYMBOL voltage 144 416 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName VV
SYMATTR Value 12
SYMBOL npn -704 288 R0
SYMATTR InstName Q1
SYMATTR Value BC547B
SYMBOL LED -1232 432 R0
SYMATTR InstName D1
SYMATTR Value NSCW100
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res -864 96 R0
SYMATTR InstName R2
SYMATTR Value 100k
SYMBOL res -688 48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 2k2
SYMBOL cap -1360 432 R0
SYMATTR InstName C2
SYMATTR Value 100µ
SYMBOL pnp -592 304 M180
SYMATTR InstName Q2
SYMATTR Value BC557B
SYMBOL res -544 96 R0
SYMATTR InstName R7
SYMATTR Value 470
SYMBOL res 128 240 R0
SYMATTR InstName RV
SYMATTR Value 2k2
SYMBOL cap 240 128 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName Co
SYMATTR Value 100n
SYMBOL res 256 240 R0
SYMATTR InstName Ro
SYMATTR Value 50k
SYMBOL res -544 400 R0
SYMATTR InstName R8
SYMATTR Value 470
TEXT -104 584 Left 2 !.tran 0 10ms 5ms
TEXT -328 232 Left 2 ;V1 Mikrofon\nRi Mikrofon-Impedanz\nVV Vorspannung\nRV Vorwiderstand\nCo, Ro Anpassung an NF
TEXT -888 584 Left 2 ;2-Draht-Mikrofon mit Fernspeisung