Version 4
SHEET 1 880 680
WIRE -80 80 -464 80
WIRE 80 80 0 80
WIRE 272 80 144 80
WIRE 304 80 272 80
WIRE -464 144 -464 80
WIRE 0 144 -64 144
WIRE 160 144 80 144
WIRE 272 144 272 80
WIRE 272 144 224 144
WIRE -464 240 -464 224
WIRE -64 240 -64 224
WIRE -64 320 -464 320
WIRE 48 320 -64 320
WIRE 384 320 384 80
WIRE 384 320 48 320
FLAG 48 320 0
SYMBOL voltage -464 224 R0
WINDOW 3 34 76 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 91 78 Left 2
SYMATTR InstName V1
SYMATTR Value SINE(3000 3000 1g 0 0 -90 0.5)
SYMBOL voltage -64 224 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 124 Left 2
SYMATTR InstName V2
SYMATTR Value SINE(1700 1700 22meg 0 0 -90 0.5)
SYMBOL cap 144 64 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 13p
SYMBOL res 288 96 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R0
SYMATTR Value 1
SYMBOL cap 224 128 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 150p
SYMBOL voltage -464 128 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 124 Left 2
SYMATTR InstName V3
SYMATTR Value PULSE(0 3000 0.499995n)
SYMBOL voltage -64 128 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 124 Left 2
SYMATTR InstName V4
SYMATTR Value PULSE(0 1700 22.72721n)
SYMBOL res 16 64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 380
SYMBOL res 96 128 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 310
TEXT 206 256 Left 2 !.tran 100n uic
TEXT -560 48 Left 2 ;https://www.mikrocontroller.net/topic/433254