No fuse, no earth ground.


Version 4
SHEET 1 880 680
WIRE 272 0 160 0
WIRE 400 0 336 0
WIRE 16 96 -64 96
WIRE 160 96 160 0
WIRE 160 96 96 96
WIRE 272 96 208 96
WIRE 400 96 400 0
WIRE 400 96 336 96
WIRE 576 96 400 96
WIRE -64 160 -64 96
WIRE 576 160 576 96
WIRE 400 176 400 96
WIRE -64 320 -64 240
WIRE 208 320 208 96
WIRE 208 320 -64 320
WIRE 272 320 208 320
WIRE 400 320 400 240
WIRE 400 320 336 320
WIRE 576 320 576 240
WIRE 576 320 400 320
WIRE 160 432 160 96
WIRE 272 432 160 432
WIRE 400 432 400 320
WIRE 400 432 336 432
WIRE 400 512 400 432
FLAG 400 512 0
SYMBOL voltage -64 144 R0
WINDOW 3 24 104 Invisible 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value SINE(0 350 50 0 0 0 500)
SYMBOL diode 272 112 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName D1
SYMATTR Value MUR460
SYMBOL res 112 80 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R1
SYMATTR Value 3000
SYMBOL cap 384 176 R0
SYMATTR InstName C1
SYMATTR Value 2000E-6
SYMBOL res 560 144 R0
SYMATTR InstName R2
SYMATTR Value 30K
SYMBOL diode 272 16 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName D2
SYMATTR Value MUR460
SYMBOL diode 336 304 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName D3
SYMATTR Value MUR460
SYMBOL diode 336 416 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName D4
SYMATTR Value MUR460
TEXT 406 480 Left 0 !.tran 200 uic

JF