| Version 4 |
| Common emitter amplifier |
| SHEET 1 904 680 |
| WIRE 368 -240 192 -240 |
| WIRE 512 -240 368 -240 |
| WIRE 368 -208 368 -240 |
| WIRE 512 -192 512 -240 |
| WIRE 192 -112 192 -240 |
| WIRE 512 -80 512 -112 |
| WIRE 368 -16 368 -128 |
| WIRE 0 32 -96 32 |
| WIRE 192 32 192 -32 |
| WIRE 192 32 64 32 |
| WIRE 304 32 192 32 |
| WIRE 192 80 192 32 |
| WIRE -96 96 -96 32 |
| WIRE 368 96 368 80 |
| WIRE 512 96 368 96 |
| WIRE 368 112 368 96 |
| WIRE 512 128 512 96 |
| WIRE 512 224 512 192 |
| WIRE -96 304 -96 176 |
| WIRE 192 304 192 160 |
| WIRE 192 304 -96 304 |
| WIRE 368 304 368 192 |
| WIRE 368 304 192 304 |
| WIRE 512 304 368 304 |
| WIRE 192 320 192 304 |
| FLAG 512 -80 0 |
| FLAG 192 320 0 |
| SYMBOL voltage -96 80 R0 |
| WINDOW 123 0 0 Left 0 |
| WINDOW 39 0 0 Left 0 |
| SYMATTR InstName V1 |
| SYMATTR Value SINE(0 20m 400) |
| SYMBOL cap 64 16 R90 |
| WINDOW 0 0 32 VBottom 2 |
| WINDOW 3 32 32 VTop 2 |
| SYMATTR InstName C1 |
| SYMATTR Value 1� |
| SYMBOL cap 528 192 R180 |
| WINDOW 0 24 56 Left 2 |
| WINDOW 3 24 8 Left 2 |
| SYMATTR InstName C2 |
| SYMATTR Value 1� |
| SYMBOL res 176 -128 R0 |
| SYMATTR InstName R1 |
| SYMATTR Value 10k |
| SYMBOL res 176 64 R0 |
| SYMATTR InstName R2 |
| SYMATTR Value 10k |
| SYMBOL res 352 96 R0 |
| SYMATTR InstName R3 |
| SYMATTR Value 10k |
| SYMBOL res 352 -224 R0 |
| SYMATTR InstName R4 |
| SYMATTR Value 10k |
| SYMBOL npn 304 -16 R0 |
| SYMATTR InstName Q1 |
| SYMATTR Value 2N2222 |
| SYMBOL voltage 512 -208 R0 |
| WINDOW 123 0 0 Left 0 |
| WINDOW 39 0 0 Left 0 |
| SYMATTR InstName V2 |
| SYMATTR Value 9 |
| SYMBOL res 496 208 R0 |
| SYMATTR InstName R5 |
| SYMATTR Value 100 |
| TEXT -120 344 Left 2 !.tran 100m |
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