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Ham Radio
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Ham Radio CD-ROM (Emerald Software) (1995).ISO
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tech
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psupply
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p-supply.bas
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BASIC Source File
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1987-10-01
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17KB
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287 lines
10 KEY OFF:CLS:GOSUB 2300
20 LOCATE 5,28:PRINT"Linear power supply design"
30 KCM=6:LOCATE 8,KCM:PRINT" This is a design simplification program for the design of standard"
40 LOCATE 9,KCM:PRINT"linear power supplies. It will take a number of initial design"
50 LOCATE 10,KCM:PRINT"specifications and do all the boring mathematics for you. In some cases"
60 LOCATE 11,KCM:PRINT"you must be very specific i.e. 'LM324' for a possible regulator"
70 LOCATE 12,KCM:PRINT"or 'Triad-Utrad FS16-800' for a transformer. Be ready with"
80 LOCATE 13,KCM:PRINT"manufacturers specs for transformers, and regulators, and various"
90 LOCATE 14,KCM:PRINT"diode rectifiers. You may either view the results on screen or dump"
100 LOCATE 15,KCM:PRINT"to the printer, so as to have a hard copy."
110 LOCATE 18,17:PRINT"Originally by George Sayer - Updated by Quasatron"
120 LOCATE 23,16:PRINT" Hit any key to continue or (D) to return to DOS "
130 CC$=INKEY$:IF CC$="" THEN 130
140 IF CC$="D" OR CC$="d" THEN CLS:SYSTEM
150 GOSUB 2300
160 LOCATE 3,24:PRINT"Linear power supply specifications"
170 LOCATE 5,6:INPUT"Nominal transformer input voltage (eg. 115, 120, 230), volts ";VNL
180 LOCATE 6,6:INPUT"High line voltage (eg. 130, 250), volts ";VHL
190 LOCATE 7,6:INPUT"Low-line voltage (eg. 95, 190), volts ";VLL
200 LOCATE 8,6:INPUT"Line frequency (eg. 50, 60), Hz ";FRQ
210 LOCATE 9,6:INPUT"Required full load current (Amps) ";IDC
220 IDCL=IDC/.65:IDCL=IDCL*100:IDCL=CINT(IDCL):IDCL=IDCL/100
230 LOCATE 11,6:PRINT"Choose regulator with current limiting (Amps)=";IDCL;" or greater"
240 LOCATE 12,6:INPUT"Regulator chosen (ID #) ";RG$
250 LOCATE 13,6:INPUT"Maximum regulator output voltage (nominal + tolerance), volts ";VROM
260 LOCATE 14,6:INPUT"Minimum regulator output voltage (nominal - tolerance), volts ";VROMN
270 LOCATE 15,6:INPUT"Maximum regulator dropout voltage at maximum load, volts ";VR:PRINT
280 LOCATE 16,6:INPUT"Regulators minimum ripple attenuation, dB ";DBMNR
290 LOCATE 17,6:INPUT"Allowable P-P ripple at regulator output, millivolts ";RIPOM
300 RIPO=RIPOM/1000
310 RIP=RIPO*(10^(DBMNR/20))
320 RIPA=RIP*100:RIPA=CINT(RIPA):RIPA=RIPA/100
330 LOCATE 19,6:PRINT"Maximum filter output ripple, volts P-P = ";RIPA
340 IF RIP>.2*(VROM+VR) THEN 350 ELSE 380
350 LOCATE 20,10:PRINT"Ripple over 20% regulator minimum input voltage"
360 LOCATE 21,10:PRINT"Reduce allowable P-P ripple at regulator output"
370 GOTO 290
380 GOSUB 2400
390 GOSUB 2300
400 LOCATE 3,24:PRINT"Linear power supply specifications"
410 LOCATE 5,8:PRINT"Decide on Full Wave Bridge, or Full Wave Center Tapped connection"
420 LOCATE 6,14:PRINT"We suggest Full Wave Bridge for above 9.5 volts output"
430 LOCATE 7,18:PRINT"and Full Wave Center Tapped for under 9.5 volts."
440 LOCATE 9,8:PRINT"Number of individual silicon recifiers (4 for FWB and 2 for FWCT) "
450 CC$=INKEY$:IF CC$="" THEN 450
460 IF CC$="4" THEN D=4
470 IF CC$="2" THEN D=2
480 IF (D<>4) AND (D<>2) THEN 440
490 LOCATE 10,12:PRINT"Do you intend to use 1N4001 series rectifiers? (Y or N) "
500 R$=INKEY$:IF R$="" THEN 490
510 IF R$="N" OR R$="n" THEN 2150
520 IF R$="y" OR R$="Y" THEN 540
530 GOTO 490
540 RECT1=.0695:RECT2=8650000!:RECT3=.0695:RECT4=99900!:DX$="1N4001 series diodes"
550 VTR=VNL/VLL/1.414/.9*(VROM+VR+RIP+D/1.6):PRINT
560 GOSUB 2400
570 GOSUB 2300
580 LOCATE 3,24:PRINT"Linear power supply specifications"
590 LOCATE 5,13:PRINT"Will transformer have 1 or 2 secondaries (Enter 1 or 2)"
600 CC$=INKEY$:IF CC$="" THEN 600
610 IF CC$="1" THEN S=1
620 IF CC$="2" THEN S=2
630 IF S<1 OR S>2 THEN 590
640 RSRG=0
650 IF S=1 AND D=2 THEN 660 ELSE 670
660 IS1=IDC:VTRS=2*VTR:GOTO 680
670 IS1=2*IDC:VTRS=VTR
680 VTRS=CINT(VTRS)
690 LOCATE 7,6:PRINT"Suggested transformer secondary voltage = ";VTRS
700 LOCATE 8,6:PRINT"Suggested xformer secondary current (total if 2 seconaries)= ";IS1
710 LOCATE 9,6:PRINT"Choose a transformer from manufacturer's catalogs with ";S
720 LOCATE 10,6:PRINT"secondaries, and close to suggested secondary current and voltage"
730 LOCATE 11,10:INPUT"Transformer chosen (ID #) ";T$
740 LOCATE 13,6:INPUT"Actual Transformer rated secondary voltage, volts ";VTRTDC1
750 IF S=1 AND D=2 THEN VTRTDC2=.5*VTRTDC1 ELSE VTRTDC2=VTRTDC1
760 LOCATE 14,6:INPUT"Actual Xformer rated secondary current (Total if 2 secs.), amps ";ITRTD1
770 IF S=1 AND D=2 THEN ITRTD2=2*ITRTD1 ELSE ITRTD2=ITRTD1
780 LOCATE 15,6:INPUT"Transformer tempurature rise, degrees C ";TPRS
790 LOCATE 16,6:PRINT"Transformer rated cold regulation"
800 LOCATE 17,10:INPUT"(If 2 secondaries, when in parallel), decimal ";RGNC2
810 GOSUB 2400
820 GOSUB 2300
830 IF S=2 AND D=2 THEN K=1.5 ELSE K=1:IF S=1 AND D=2 THEN K=.375
840 N=0:RGNC=RGNC2:VTRTDC=VTRTDC2:ITRTD=ITRTD2
850 RGNH=1/((1+1/RGNC)/(.00393*TPRS+1)-1)
860 VTRTDH=VTRTDC*(RGNC+1)/(RGNH+1)
870 XC=K*RGNC/(RGNC+1)*IDC/ITRTD
880 XH=K*RGNH/(RGNH+1)*IDC/ITRTD
890 HACC=1.494*(XC^.333)+.111*XC
900 HACH=1.494*(XH^.333)+.111*XH
910 ITC=1.37*IDC/(HACC^.5)
920 ITH=1.37*IDC/(HACH^.5)
930 CMIN=IDC*(.5-HACC/3.1416)/(FRQ*RIP)
940 ICRMS=((ITC^2)-(IDC^2))^.5
950 VNMLX=1.414*VHL/VNL*VTRTDC*(RGNC+1)
960 IDPR=2.36*IDC/HACC
970 REM 1st overflow
980 VDMX=RECT1*LOG(RECT2*IDPR)
990 VDMN=RECT3*LOG(RECT4*IDPR)
1000 VDFA=RECT1*(2*LOG(RECT2*1.5*IDC)-LOG(RECT2*3*IDC))
1010 RDFA=.667*RECT1*(LOG(RECT2*3*IDC)-LOG(RECT2*1.5*IDC))/IDC
1020 IDRMS=.5*(ICRMS^2+IDC^2)^.5
1030 VFLMX=VNLMX*COS(HACC)-VDMN*D/2+RIP/2
1040 VFLMN=VLL/VHL*VNLMX*COS(HACH)-VDMX*D/2-RIP/2
1050 PRGMX=(VFLMX-RIP/2-VROMN)*IDC
1060 PD=VDFA*IDC/2+IDRMS^2*RDFA
1070 IINRSH=(VNLMX-D/2*VDMN)/(RGNC*K*VTRTDC/ITRTD+RFDA*D/2)
1080 IDCMAX=.87/K^.4*((RGNH/(RGNH+1))^.2*ITRTD)
1090 IINRSHA=CINT(IINRSH)
1100 LOCATE 3,24:PRINT"Linear power supply specifications"
1110 LOCATE 5,6:PRINT"Maximum inrush current in amps = ";IINRSHA
1120 LOCATE 6,6:PRINT"Can rectifiers handle this inrush current? (Y or N)"
1130 A$=INKEY$:IF A$="" THEN 1130
1140 IF A$="Y" OR A$="y" OR A$="N" OR A$="n" THEN 1160
1150 GOTO 1120
1160 IF A$="Y" OR A$="y" THEN 1310 ELSE 1170
1170 N=N+1
1180 IF N=2 THEN 1190 ELSE 1220
1190 LOCATE 8,6:PRINT"NOTE: Program returns to original condition of no surge"
1200 LOCATE 9,12:PRINT"resistor. Last new regulation was ";NRGNC
1210 GOTO 840
1220 LOCATE 8,6:PRINT"Transformer cold regulation, ";RGNC;" must be increased"
1230 LOCATE 9,10:PRINT"by addition of a surge resistor"
1240 LOCATE 11,6:INPUT"Estimate new cold regulation (Suggest 10% increments) ";NRGNC
1250 RSRG=(VTRTDC/ITRTD)*(NRGNC-RGNC)/(NRGNC+1)
1260 RGNC=NRGNC
1270 RGNH=(RGNH*VTRTDH+ITRTD*RSRG)/(VTRTDH-ITRTD*RSRG)
1280 VTRTDC=VTRTDC-ITRTD*RSRG
1290 GOSUB 2300
1300 GOTO 860
1310 VDMNR=5.66*VHL/VNL*(RGNH+1)*VTRTDH/D
1320 RSRGP=RSRG*(VNL/(VTRTDC2*(RGNC2+1)))^2
1330 IF D=2 AND S=1 THEN ITHA=.5*ITH ELSE ITHA=ITH
1340 PTPRS=TPRS*(.5+.5*(IDC/IDCMAX)^2)
1350 PRSRGP=RSRGP*((1+RNGC2)*VTRTDC1/VNL*ITHA)^2
1360 LOCATE 18,29:PRINT"Displayed results follow"
1370 LOCATE 20,20:PRINT"Dump Specifications to printer ? (Y or N)"
1380 LOCATE 21,17:PRINT"If 'yes', dump will occur after visual display"
1390 DUMP$=INKEY$:IF DUMP$="" THEN 1380
1400 GOSUB 2400
1410 GOSUB 2300
1420 KCM=68:LOCATE 1,27:PRINT" Application specifications "
1430 LOCATE 3,6:PRINT"Nominal transformer input voltage ----------------";VNL:LOCATE 3,KCM:PRINT"Volts"
1440 LOCATE 4,6:PRINT"High line voltage expectation --------------------";VHL:LOCATE 4,KCM:PRINT"Volts"
1450 LOCATE 5,6:PRINT"Low line voltage expectation----------------------";VLL:LOCATE 5,KCM:PRINT"Volts"
1460 LOCATE 6,6:PRINT"Nominal line frequency ---------------------------";FRQ:LOCATE 6,KCM:PRINT"Hertz"
1470 LOCATE 7,6:PRINT"Full load current requirement --------------------";IDC:LOCATE 7,KCM:PRINT"Amps"
1480 LOCATE 8,6:PRINT"Maximum regulator output voltage -----------------";VROM:LOCATE 8,KCM:PRINT"Volts"
1490 LOCATE 9,6:PRINT"Minimum regulator output voltage -----------------";VROMN:LOCATE 9,KCM:PRINT"Volts"
1500 LOCATE 10,6:PRINT"Maximum regulator dropout voltage (full load) ----";VR:LOCATE 10,KCM:PRINT"Volts"
1510 LOCATE 11,6:PRINT"Regulator minimum ripple attenuation -------------";DBMNR:LOCATE 11,KCM:PRINT"dB"
1520 LOCATE 12,6:PRINT"Allowable regulator P-P ripple output ------------";RIPO:LOCATE 12,KCM:PRINT"Millivolts"
1530 LOCATE 13,6:PRINT"Number of diodes ---------------------------------";D
1540 LOCATE 14,6:PRINT"Number of secondaries ----------------------------";SCNDRS
1550 LOCATE 15,6:PRINT"Actual rated voltage of secondary winding --------";VTRTDC1:LOCATE 15,KCM:PRINT"Volts"
1560 LOCATE 16,6:PRINT"Actual rated current of secondary winding --------";ITRTD1:LOCATE 16,KCM:PRINT"Amps"
1570 LOCATE 17,6:PRINT"Transformer temperature rise ---------------------";TPRS:LOCATE 17,KCM:PRINT"Deg. C"
1580 LOCATE 18,6:PRINT"Transformer regulation at ambient temperature ----";RGNC2:LOCATE 18,KCM:PRINT"Volts"
1590 LOCATE 19,6:PRINT"Regulator used ----- "RG$
1600 LOCATE 20,6:PRINT"Rectifiers used ---- ";DX$
1610 LOCATE 21,6:PRINT"Transformer used --- ";T$
1620 GOSUB 2400
1630 GOSUB 2300
1640 KCM=72:LOCATE 1,24:PRINT" Final suggested specifications "
1650 ITHA=ITHA*100:ITHA=CINT(ITHA):ITHA=ITHA/100
1660 LOCATE 3,6:PRINT"Transformer current at required full load --------------";ITHA:LOCATE 3,KCM:PRINT"Amps"
1670 IDCMAX=IDCMAX*100:IDCMAX=CINT(IDCMAX):IDCMAX=IDCMAX/100
1680 LOCATE 4,6:PRINT"Maximum allowable current output - when load is increased"
1690 LOCATE 5,7:PRINT"so that transformer load = load at full temp rise -----";IDCMAX:LOCATE 5,KCM:PRINT"Amps"
1700 CMIN=CMIN*100:CMIN=CINT(CMIN):CMIN=CMIN/100
1710 LOCATE 6,6:PRINT"Minimum capacity of filter capacitor -------------------";CMIN:LOCATE 6,KCM:PRINT"uF"
1720 ICRMS=ICRMS*100:ICRMS=CINT(ICRMS):ICRMS=ICRMS/100
1730 LOCATE 7,6:PRINT"RMS capacitor current ----------------------------------";ICRMS:LOCATE 7,KCM:PRINT"Amps"
1740 VNLMX=VNLMX*10:VNLMX=CIN(VNLMX):VNLMX=VNLMX/10
1750 LOCATE 8,6:PRINT"Maximum no load filter output voltage ------------------";VNLMX:LOCATE 8,KCM:PRINT"Volts"
1760 VFLMX=VFLMX*10:VFLMX=CINT(VFLMX):VFLMX=VFLMX/10
1770 LOCATE 9,6:PRINT"Maximum full load filter output voltage ----------------";VFLMX:LOCATE 9,KCM:PRINT"Volts"
1780 VFLMN=VFLMN*10:VFLMN=CINT(VFLMN):VFLMN=VFLMN/10
1790 LOCATE 10,6:PRINT"Minimum full load filter output voltage ----------------";VFLMN:LOCATE 10,KCM:PRINT"Volts"
1800 IF VFLMN<(VROM+VR) THEN 1900 ELSE 1880
1810 LOCATE 12,10:PRINT"Full load filter output voltage is less than maximum regulator"
1820 LOCATE 13,10:PRINT"output voltage plus maximium regulator dropout voltage at full"
1830 LOCATE 14,10:PRINT"load. This requires either less allowable output ripple, or"
1840 LOCATE 15,10:PRINT"higher transformer voltage, or both."
1850 LOCATE 17,10:PRINT"Hit any key to re-enter preliminary values, remember, less ripple!"
1860 CC4=INKEY$:IF CC$="" THEN 1860
1870 GOTO 150
1880 PRGMX=PRGMX*10:PRGMX=CINT(PRGMX):PRGMX=PRGMX/10
1890 LOCATE 11,6:PRINT"Maximum regulator power dissipation --------------------";PRGMX:LOCATE 11,KCM:PRINT"Watts"
1900 PD=PD*100:PD=CINT(PD):PD=PD/100
1910 LOCATE 12,6:PRINT"Individual rectifier power dissipation -----------------";PD:LOCATE 12,KCM:PRINT"Watts"
1920 VDMNR=CINT(VDMNR)
1930 LOCATE 13,6:PRINT"Minimum rectifier reverse voltage ----------------------";VDMNR:LOCATE 13,KCM:PRINT"Volts"
1940 IINRSH=CINT(IINRSH)
1950 LOCATE 14,6:PRINT"Maximum inrush current ---------------------------------";IINRSH:LOCATE 14,KCM:PRINT"Amps"
1960 IDPR=IDPR*10:IDPR=CINT(IDPR):IDPR=IDPR/10
1970 LOCATE 15,6:PRINT"Repeditive peak rectifier current ----------------------";IDPR:LOCATE 15,KCM:PRINT"Amps"
1980 RSRGP=RSRGP*10:RSRGP=CINT(RSRGP):RSRGP=RSRGP/10
1990 LOCATE 16,6:PRINT"Surge resistor (if in tranformer primary) --------------";RSRGP:LOCATE 16,KCM:PRINT"Ohms"
2000 PRSRGP=PRSRGP*100:PRSRGP=CINT(PRSRGP):PRSRGP=PRSRGP/100
2010 LOCATE 17,6:PRINT"Power dissipated in surge resistor ---------------------";PRSRGP:LOCATE 17,KCM:PRINT"Watts"
2020 PTPRS=CINT(PTPRS)
2030 LOCATE 18,6:PRINT"Predicted transformer temperature rise -----------------";PTPRS:LOCATE 18,KCM:PRINT"Deg. C"
2040 LOCATE 19,6:PRINT"Would you like to try another transformer ? (Y or N)"
2050 B$=INKEY$:IF B$="" THEN 2050
2060 IF B$="Y" OR B$="y" THEN 150
2070 IF B$="N" OR B$="n" THEN 2080 ELSE 2040
2080 LOCATE 21,6:PRINT"Be sure to correctly fuse the supply and conform to normal safety specs"
2090 IF DUMP$="Y" OR DUMP$="y" THEN LOCATE 23,27:PRINT" Standby for printer dump ":FOR KCM=0 TO 7500:NEXT KCM:GOSUB 2430
2100 LOCATE 23,8:PRINT" This completes the program. Again (A) DOS (D) Specs again (S) "
2110 CC$=INKEY$:IF CC$="" THEN 2110
2120 IF CC$="D" OR CC$="d" THEN CLS:SYSTEM
2130 IF CC$="A" OR CC$="a" THEN 150
2140 IF CC$="S" OR CC$="s" THEN 1410 ELSE 2110
2150 LOCATE 12,6:INPUT"type rectifier used (ID #)";DX$
2160 LOCATE 14,11:PRINT"Find two points on verticle part of rectifier maximum I vs V"
2170 LOCATE 15,20:PRINT"curve with a ratio of I1 to I2 that is 1:10"
2180 LOCATE 16,6:INPUT"I1 (amps)= ";I1X:LOCATE 16,40:INPUT"V1 (volts)= ";V1X
2190 LOCATE 17,6:INPUT"I2 (amps)= ";I2X:LOCATE 17,40:INPUT"V2 (volts)= ";V2X
2200 LOCATE 18,11:PRINT"Find two points on verticle part of rectifier minimum I vs V"
2210 LOCATE 19,20:PRINT"curve with a ratio of I1 to I2 that is 1:10"
2220 LOCATE 20,6:INPUT"I1 (amps)= ";I1N:LOCATE 20,40:INPUT"V1 (volts)= ";V1N
2230 LOCATE 21,6:INPUT"I2 (amps)= ";I2N:LOCATE 21,40:INPUT"V2 (volts)= ";V2N
2240 RECT1=1/(1/(V2X-V1X)*LOG(I2X/I1X))
2250 RECT2=1/(I1X*(2.718^-(V1X/(V2X-V1X)*LOG(I2X/I1X))))
2260 RECT3=1/(1/(V2N-V1N)*LOG(I2N/I1N))
2270 RECT4=1/(I1N*(2.718^-(V1N/(V2N-V1N)*LOG(I2N/I1N))))
2280 GOTO 550
2290 RUN
2300 REM Quasatron Electronics - K.C. Mazie 10-1-1987
2310 CLS:KCM=KCM+1
2320 LOCATE 1,2:PRINT CHR$(201);STRING$(76,205);CHR$(187):LET X=2
2330 LOCATE X,2:PRINT CHR$(186):LOCATE X,79:PRINT CHR$(186)
2340 X=X+1:IF X<23 THEN GOTO 2330
2350 LOCATE 23,2:PRINT CHR$(200);STRING$(76,205);CHR$(188)
2360 IF KCM>1 THEN RETURN
2370 LOCATE 3,30:PRINT"QUASATRON ELECTRONICS"
2380 LOCATE 4,29:PRINT STRING$(23,126)
2390 RETURN
2400 LOCATE 23,29:PRINT" Hit any key to continue "
2410 CC$=INKEY$:IF CC$="" THEN 2410
2420 RETURN
2430 GOSUB 2310:LOCATE 8,20:PRINT"Set printer and hit any key, (A) to abort"
2440 PRNT$=INKEY$:IF PRNT$="" THEN 2440
2450 IF PRNT$="A" OR PRNT$="a" THEN LOCATE 16,38:PRINT"Aborted":GOSUB 2400
2460 IF PRNT$="A" OR PRNT$="a" THEN DUMP$="":GOTO 1410
2470 LOCATE 16,30:PRINT"Printing.....Stand by"
2480 LPRINT" Linear power supply specifications":LPRINT
2490 LPRINT"Nominal transformer input voltage ------------------- ";VNL;" Volts"
2500 LPRINT"Expected high line voltage -------------------------- ";VHL;" Volts"
2510 LPRINT"Expected low line voltage --------------------------- ";VLL;" Volts"
2520 LPRINT"Line frequency -------------------------------------- ";FRQ;" Hz"
2530 LPRINT"Full load current ----------------------------------- ";IDC;" Amps"
2540 LPRINT"Maximum regulator output voltage -------------------- ";VROM;" Volts"
2550 LPRINT"Minimum regulator output voltage -------------------- ";VROMN;" Volts"
2560 LPRINT"Max. regulator dropout V. at full load -------------- ";VR;" Volts"
2570 LPRINT"Regulator minimum ripple attenuation ---------------- ";DBMNR;" dB"
2580 LPRINT"Allowable regulator P-P ripple output --------------- ";RIPO;" Milli V."
2590 LPRINT"Number of diodes used ------------------------------- ";D
2600 LPRINT"Number of secondaries ------------------------------- ";S
2610 LPRINT"Actual rated voltage of transformers secondary ------ ";VTRTDC1;" Volts"
2620 LPRINT"Actual rated current of secondary winding ----------- ";ITRTD1;" Amps"
2630 LPRINT"Tranformer temperature rise ------------------------- ";TPRS;" Deg C."
2640 LPRINT"Transformer regulation at ambient temperature ------- ";RGNC2;" Volts"
2650 LPRINT"Type regulator used -------- ";RG$
2660 LPRINT"Type rectifiers used ------- ";DX$
2670 LPRINT"Type transformer used ------ ";T$:LPRINT
2680 LPRINT:LPRINT" Recommended final values"
2690 LPRINT"Transformer current at full load -------------(Amps)- ";ITHA
2700 LPRINT"Maximum allowable current output (when load is increased"
2710 LPRINT"so that Xfrmr load = load at full temp rise) -(Amps)- ";IDCMAX
2720 LPRINT"Minimum value of filter capacitor ------------( uF )- ";CMIN
2730 LPRINT"RMS capacitor current ------------------------(Amps)- ";ICRMS
2740 LPRINT"Maximum no load filter output voltage -------(Volts)- ";VNLMX
2750 LPRINT"Maximum full load filter output voltage -----(Volts)- ";VFLMX
2760 LPRINT"Minimum full load filter output voltage -----(Volts)- ";VFLMN
2770 LPRINT"Maximum regulator power dissipation ---------(Watts)- ";PRGMX
2780 LPRINT"Individual rectifier power dissipation ------(Watts)- ";PD
2790 LPRINT"Minimum rectifier reverse voltage -----------(Volts)- ";VDMNR
2800 LPRINT"Maximum inrush current -----------------------(Amps)- ";IINRSH
2810 LPRINT"Repeditive peak rectifier current ------------(Amps)- ";IDPR
2820 LPRINT"Surge resistor (if in Xfrmr. primary) --------(Ohms)- ";RSRGP
2830 LPRINT"Power dissipated in surge resistor ----------(Watts)- ";PRSRPG
2840 LPRINT"Predicted transformer temperature rise ------(Deg C)- ";PTPRS
2850 LPRINT:LPRINT" End of Specifications"
2860 GOTO 2100