Someone mentioned MOSFET history recently.
My first use of VN46AF was remote drive to small filament lamps. The requirement was switching of rectified 12V AC from 4000B logic with only one wire to the lamp and the other side of the lamp grounded.
Something like this if I've remembered it correctly.
Version 4.1 SHEET 1 4960 1688 WIRE -112 -288 -160 -288 WIRE -32 -288 -112 -288 WIRE 1152 -288 -32 -288 WIRE 1152 -224 1152 -288 WIRE -32 -208 -32 -288 WIRE -304 -160 -400 -160 WIRE -160 -160 -160 -288 WIRE -160 -160 -240 -160 WIRE 688 -144 656 -144 WIRE 704 -144 688 -144 WIRE 816 -144 784 -144 WIRE 912 -144 880 -144 WIRE 992 -144 912 -144 WIRE 1104 -144 992 -144 WIRE -400 -112 -400 -160 WIRE -304 -112 -400 -112 WIRE -160 -112 -160 -160 WIRE -160 -112 -240 -112 WIRE -704 -64 -832 -64 WIRE -512 -64 -624 -64 WIRE -448 -64 -512 -64 WIRE -400 -64 -400 -112 WIRE -400 -64 -448 -64 WIRE 912 -64 912 -144 WIRE 992 -64 912 -64 WIRE 1152 -64 1152 -128 WIRE 1152 -64 1056 -64 WIRE -304 -48 -352 -48 WIRE -160 -48 -160 -112 WIRE -160 -48 -240 -48 WIRE 656 -32 656 -144 WIRE 704 -32 656 -32 WIRE 816 -32 784 -32 WIRE 912 -32 912 -64 WIRE 912 -32 880 -32 WIRE -832 -16 -832 -64 WIRE -704 -16 -704 -64 WIRE -624 -16 -624 -64 WIRE -448 -16 -448 -64 WIRE -352 0 -352 -48 WIRE -304 0 -352 0 WIRE -160 0 -160 -48 WIRE -160 0 -240 0 WIRE -32 0 -32 -144 WIRE 64 0 -32 0 WIRE 144 0 64 0 WIRE 448 0 400 0 WIRE 496 0 448 0 WIRE 544 0 496 0 WIRE -352 64 -352 0 WIRE -304 64 -352 64 WIRE -160 64 -240 64 WIRE 656 64 656 -32 WIRE 1152 64 1152 -64 WIRE 1216 64 1152 64 WIRE 1264 64 1216 64 WIRE -832 112 -832 64 WIRE -704 112 -704 64 WIRE -704 112 -832 112 WIRE -624 112 -624 64 WIRE -512 112 -624 112 WIRE -448 112 -448 48 WIRE -448 112 -512 112 WIRE -352 112 -352 64 WIRE -352 112 -448 112 WIRE -304 112 -352 112 WIRE -160 112 -160 64 WIRE -160 112 -240 112 WIRE -32 112 -32 0 WIRE 64 112 64 0 WIRE 448 128 448 0 WIRE 544 128 544 0 WIRE 1152 128 1152 64 WIRE -832 144 -832 112 WIRE -400 192 -400 -64 WIRE -304 192 -400 192 WIRE -160 192 -160 112 WIRE -160 192 -240 192 WIRE -400 240 -400 192 WIRE -304 240 -400 240 WIRE -160 240 -160 192 WIRE -160 240 -240 240 WIRE -32 240 -32 176 WIRE -32 240 -160 240 WIRE 64 240 64 176 WIRE 64 240 -32 240 WIRE 272 240 272 96 WIRE 272 240 64 240 WIRE 448 240 448 192 WIRE 448 240 272 240 WIRE 544 240 544 192 WIRE 544 240 448 240 WIRE 656 240 656 144 WIRE 656 240 544 240 WIRE 1152 240 1152 208 WIRE 1152 240 656 240 WIRE 1152 272 1152 240 FLAG -512 -64 vta FLAG -512 112 vtb FLAG 1152 272 0 FLAG 1216 64 load FLAG 688 -144 sw FLAG 992 -144 gate FLAG -112 -288 rec FLAG -832 144 0 FLAG 496 0 4000B-power SYMBOL ind -608 80 R180 WINDOW 0 -35 92 Left 2 WINDOW 3 -89 64 Left 2 SYMATTR InstName L2 SYMATTR Value 0.022H SYMATTR Type ind SYMATTR SpiceLine Rser=1m SYMBOL ind -720 -32 R0 WINDOW 0 -35 20 Left 2 WINDOW 3 -39 46 Left 2 SYMATTR InstName L1 SYMATTR Value 2H SYMATTR Type ind SYMATTR SpiceLine Rser=5 SYMBOL diode -304 -96 R270 WINDOW 0 15 -1 VTop 2 WINDOW 3 2 54 VBottom 2 SYMATTR InstName D1 SYMATTR Value RSX301LAM30 SYMBOL voltage -832 -32 R0 WINDOW 3 -263 37 Left 2 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 WINDOW 0 14 4 Left 2 SYMATTR Value SINE(0 163 60) SYMATTR InstName V1 SYMBOL cap -240 -176 R90 WINDOW 0 15 63 VBottom 2 WINDOW 3 -14 -5 VTop 2 SYMATTR InstName C1 SYMATTR Value 10n SYMBOL cap -240 -64 R90 WINDOW 0 14 63 VBottom 2 WINDOW 3 -16 -4 VTop 2 SYMATTR InstName C2 SYMATTR Value 10n SYMBOL cap -240 48 R90 WINDOW 0 12 62 VBottom 2 WINDOW 3 -15 -4 VTop 2 SYMATTR InstName C3 SYMATTR Value 10n SYMBOL cap -240 176 R90 WINDOW 0 12 67 VBottom 2 WINDOW 3 -16 -2 VTop 2 SYMATTR InstName C4 SYMATTR Value 10n SYMBOL TVSdiode -464 -16 R0 WINDOW 0 -36 18 Left 2 WINDOW 3 -119 73 Left 2 SYMATTR InstName D5 SYMATTR Value SMBJ24CA SYMBOL diode -304 16 R270 WINDOW 0 20 -1 VTop 2 WINDOW 3 2 54 VBottom 2 SYMATTR InstName D2 SYMATTR Value RSX301LAM30 SYMBOL diode -240 128 M270 WINDOW 0 20 68 VTop 2 WINDOW 3 2 11 VBottom 2 SYMATTR InstName D3 SYMATTR Value RSX301LAM30 SYMBOL diode -240 256 M270 WINDOW 0 22 67 VTop 2 WINDOW 3 -2 10 VBottom 2 SYMATTR InstName D4 SYMATTR Value RSX301LAM30 SYMBOL res 1136 112 R0 SYMATTR InstName R5 SYMATTR Value 100 SYMBOL nmos 1104 -224 R0 SYMATTR InstName M1 SYMATTR Value AO6408 SYMBOL voltage 656 48 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 WINDOW 3 45 59 Left 2 SYMATTR Value PULSE(0 12 0 100n 100n 100m 300m) SYMATTR InstName V2 SYMBOL diode 816 -128 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D7 SYMATTR Value 1N4148 SYMBOL cap 1056 -80 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C6 SYMATTR Value 100n SYMBOL res 800 -160 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 1k SYMBOL diode -48 -208 R0 SYMATTR InstName D6 SYMATTR Value 1N4007 SYMBOL cap -48 112 R0 SYMATTR InstName C5 SYMATTR Value 1000µ SYMBOL PowerProducts\\LT1085-12 272 0 R0 SYMATTR InstName U1 SYMBOL cap 48 112 R0 SYMATTR InstName C7 SYMATTR Value 100n SYMBOL cap 432 128 R0 SYMATTR InstName C8 SYMATTR Value 100n SYMBOL cap 528 128 R0 SYMATTR InstName C9 SYMATTR Value 100µ SYMBOL diode 880 -48 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D8 SYMATTR Value 1N4148 SYMBOL res 800 -48 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 330k TEXT -1168 80 Left 2 !.tran 0 1 0 1u startup TEXT -736 -104 Left 2 !K1 L1 L2 0.97 TEXT 1216 152 Left 2 ;small filament lamp TEXT 312 -88 Left 2 ;7812 TEXT 1216 -192 Left 2 ;VN46AF TEXT 704 160 Left 2 ;4000B logic TEXT -384 -368 Left 2 ;Switch a filament lamp directly from full wave rectified AC\nusing a 4000B logic output. Drawn June 2026.