Schematic? Test points?

Question

Here is a listing from an old DOS Spice file. How do i get LTSpice to show the schematic, so that i can probe,etc?

VREF+MOSFET reg (25V ref)

*.OPTIONS ACCT LIST NODE OPTS NUMDGT=6 RELTOL=0.00001 NOPAGE .TEMP 25 .DC V1 -50 50 1 V1 4 0 DC 180V ;Vreg R1 3 1 7.87MEG ;for Vref 25V appx R2 4 3 412K ;3uA at 1.24V VR 0 1 0.0V ; ground current sense

+ FB - X3 4 3 1 LM285ADJ .PRINT DC I(VR) V(3) V(4) .PLOT DC I(VR) V(3) V(4)

.SUBCKT LM285ADJ 1 2 3 ; 1=+ cathode, 2=FB, 3=- anode ISINK 0 81 5UA RSINK 81 0 1E15 ; dummy - get +V term 81 rel term 0 VREF 82 81 1.24V ; vary this +/- 1% VP 83 0 15V VN 84 0 -15V

C B E SUB Q1 82 85 0 0 QN2222 RA 3 0 1E-6OHM RC 1 82 1E-6OHM X1 81 2 83 84 85 TL031 .ENDS LM285ADJ

.MODEL QN2222 NPN(

IS= 2.560E-14 BF= 200. NE= 2.00 IKF= .560
BR= 5.00 NC= 2.00 ISE= 1.280E-11
RB= 10.0 RC= .500 ISC= 1.280E-11
CJE= 2.500E-11 TF= 5.333E-10 CJC= 8.000E-12 TR= 4.000E-08)

TL031 operational amplifier "macromodel" subcircuit
n.i. input inverting input
| | positive power supply
| | | negative power supply
| | | | v--output .subckt TL031 1 2 3 4 5
c1 11 12 3.498E-12 c2 6 7 15.00E-12 css 10 99 11.38E-12 dc 5 53 dx de 54 5 dx dlp 90 91 dx dln 92 90 dx dp 4 3 dx egnd 99 0 poly(2) (3,0) (4,0) 0 .5 .5 fb 7 99 poly(5) vb vc ve vlp vln 0 936.5E3 -900E3 900E3 900E3 -900E3 ga 6 0 11 12 113.1E-6 gcm 0 6 10 99 2.257E-9 iss 3 10 dc 76.50E-6 hlim 90 0 vlim 1K j1 11 2 10 jx j2 12 1 10 jx r2 6 9 100.0E3 rd1 4 11 8.841E3 rd2 4 12 8.841E3 ro1 8 5 135 ro2 7 99 135 rp 3 4 138.5E3 rss 10 99 2.614E6 vb 9 0 dc 0 vc 3 53 dc 1.700 ve 54 4 dc 1.800 vlim 7 8 dc 0 vlp 91 0 dc 8 vln 0 92 dc 8 .model dx D(Is=800.0E-18) .model jx PJF(Is=1.000E-12 Beta=140e-6 Vto=-1) .ends TL031

.END

Jim Thompson · Accepted Answer

I've heard rumors of a program that can draw schematics from a netlist... at about $100K cost... buy me one while you're at it >:-} Just draw it yourself from the netlist... there are only 5 components and I've marked beginning and end of the netlist... the rest of the listing is device library calls. *** Netlist begins here *** Netlist ends here 		                                         ...Jim Thompson --  | James E.Thompson                                 |    mens     | | Analog Innovations                               |     et      | | Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    | | San Tan Valley, AZ 85142     Skype: skypeanalog  |             | | Voice:(480)460-2350  Fax: Available upon request |  Brass Rat  | | E-mail Icon at  |    1962     |               I love to cook with wine.     Sometimes I even put it in the food.

Robert Baer · Answer

Thanks.  So Spice is not Spice is not Spice..

Jim Thompson · Answer

You, and many others here, need to read up a little and develop some understanding of the difference between schematic files (*.sch or *.asc), symbol files (*.slb, *.sym or *.asy), netlists (*.net), circuit files (*.cir) and device libraries (*.lib, *.mod, *.sub). What you posted is mostly libraries.  Hand draw out the portion I indicated for the "schematic). 		                                         ...Jim Thompson --  | James E.Thompson                                 |    mens     | | Analog Innovations                               |     et      | | Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    | | San Tan Valley, AZ 85142     Skype: skypeanalog  |             | | Voice:(480)460-2350  Fax: Available upon request |  Brass Rat  | | E-mail Icon at  |    1962     |               I love to cook with wine.     Sometimes I even put it in the food.

Robert Baer · Answer

That works; thanx.

Schematic? Test points?

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