On 10/20/2012 1:38 PM, Robert Baer wrote:

That is what i finally determined; LTspice simulation is as follows:

Version 4
SHEET 1 880 680
WIRE 496 16 -48 16
WIRE 80 112 32 112
WIRE 176 112 160 112
WIRE 224 112 176 112
WIRE 240 112 224 112
WIRE 336 112 320 112
WIRE 416 112 336 112
WIRE 32 144 32 112
WIRE -48 160 -48 16
WIRE 416 176 416 112
WIRE 336 192 336 112
WIRE -48 256 -48 240
WIRE 32 256 32 224
WIRE 176 256 176 176
WIRE 304 288 304 160
WIRE 496 288 496 16
WIRE 496 288 304 288
FLAG 32 256 0
FLAG 416 256 0
FLAG 336 256 0
FLAG 176 256 0
FLAG -48 256 0
SYMBOL voltage 32 128 R0
SYMATTR InstName V1
SYMATTR Value 117V
SYMBOL res 64 128 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 10
SYMBOL res 400 160 R0
SYMATTR InstName R2
SYMATTR Value 404
SYMBOL cap 160 112 R0
SYMATTR InstName C1
SYMATTR Value 33µ
SYMBOL cap 320 192 R0
SYMATTR InstName C2
SYMATTR Value 50µ
SYMBOL voltage -48 144 R0
WINDOW 0 8 7 Left 2
WINDOW 3 -27 157 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PULSE(0 250 10n 10n 10n 1u 100u 5000)
SYMBOL nmos 224 160 R270
WINDOW 3 79 57 VRight 2
SYMATTR Value STP8NM60
SYMATTR InstName M1
TEXT -80 320 Left 2 !.tran 0 30m 0 1m

Is there a 1-minute overview on how to run this?
I haven't run spice in 20 years.
I downloaded/installed ltspiceIV.
Tried to import the netlist.
Got lots of errors when I tried to simulate it.
So, I made a schematic and exported the netlist.
Doesn't look anything like this format.
I musta downloaded the wrong simulator???

"ExpressPCB Netlist"
"LTspice IV Version 4.16t"
1
0
0
""
""
""
"Part IDs Table"
"Q1" "NPN" ""
"R1" "R" ""
"R2" "R" ""
"R3" "R" ""

"Net Names Table"
"P001" 1
"N001" 3
"P002" 5
"NC_01" 7
"0" 8
"NC_02" 9

"Net Connections Table"
1 1 1 2
1 2 2 0
2 1 2 4
2 4 2 0
3 1 3 6
3 3 1 0
4 2 1 0
5 3 2 0
6 4 1 0