Version 4
SHEET 1 880 808
WIRE 272 192 48 192
WIRE 448 192 352 192
WIRE 496 192 448 192
WIRE 48 288 48 192
WIRE 448 288 448 192
WIRE 48 432 48 368
WIRE 448 432 448 352
FLAG 448 432 0
FLAG 48 432 0
FLAG 496 192 Uout
IOPIN 496 192 Out
FLAG 48 192 PWM
SYMBOL res 256 208 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 4700
SYMBOL cap 432 288 R0
SYMATTR InstName C1
SYMATTR Value 22µ
SYMBOL voltage 48 272 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 11 106 Left 2
SYMATTR Value PULSE(0 5 0 10u 10u 20m 40m)
SYMATTR InstName V1
TEXT 40 488 Left 2 !.tran 0 1 0 startup
TEXT 136 304 Left 2 ;PWMvSignal = 25Hz\nDutyCycle 50%