4 KEY OFF 5 LOCATE 25,5 10 PRINT DATE$,TIME$ 15 REM 20 REM 21 REM 25 PRINT" Dew Heater programme." 26 PRINT 30 PRINT" To make a heated dew shield using resistors" 31 PRINT 32 PRINT" The best type of resister is 1/2 to 1 watt, using 12 volts DC" 33 PRINT 34 PRINT" 3 watts suitable for eyepiece & finder, 5 watts for mirror." 35 PRINT "To quit type (2) in volts" 36 PRINT 40 INPUT "Volts ie (12 volt)";A 45 IF A=1 THEN END 46 IF A=2 THEN CHAIN "scofix",5 47 INPUT "Watts required ie (3 watts)";B 48 INPUT "Resister ohms ie (15)";D 49 INPUT "Battery amps per hr ie (1 amp per hr)";L 50 C=((A*A)/B) 51 E=C/D 52 F=B/A 53 G=L/F 59 REM 150 PRINT C;"= Total ohms" 151 PRINT 152 PRINT E;" No. of resisters required" 153 PRINT 154 PRINT F;"is the amps drawn, ie(.25 gives you 4 hrs on 1amp hr battery)" 155 PRINT 156 PRINT G;" is battery life in hours." 160 GOTO 35 201 END