Version 4.1
SHEET 1 1328 680
WIRE 64 64 16 64
WIRE 208 64 64 64
WIRE 416 64 272 64
WIRE 432 64 416 64
WIRE 16 96 16 64
WIRE 432 96 432 64
WIRE 16 224 16 176
WIRE 240 224 16 224
WIRE 432 224 432 176
WIRE 432 224 240 224
WIRE 240 256 240 224
FLAG 240 256 0
FLAG 64 64 50hz_250V
FLAG 416 64 half_wave_rectified
SYMBOL voltage 16 80 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value SINE(0 353.5 50)
SYMBOL diode 208 48 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMBOL res 416 80 R0
SYMATTR InstName R1
SYMATTR Value 100R
TEXT -16 280 Left 2 !.tran 100m
TEXT -616 -104 Left 2 ;mains voltage is set at 250V rms.\nit used to be called 250V rms, \nbut then it changed to 230V +/- 10%\nwhich includes 250V, \nthis means the national grid didn't have to \nchange so they have left it at 250V rms\nLTspice takes the peak voltage as its input \nso 250Vrms is input as ...\n250 x sq root 2 = 250 x 1.414=353.5V
TEXT 584 -56 Left 4 ;instructions
TEXT 592 0 Left 2 ;click on run\nthen click on the "50hz_250V" net\nthis should plot the voltage waveform\nthen click on the "half_wave_rect" net\nagain this should plot the voltage.\n \nnote that the voltage ripple is too big \nfor this cct to be any use.