Home » CEEFAX disks » telesoftware17.adl » 25-08-89/NITXT
25-08-89/NITXT
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
| Tape/disk: | Home » CEEFAX disks » telesoftware17.adl |
| Filename: | 25-08-89/NITXT |
| Read OK: | ✔ |
| File size: | 0C7F bytes |
| Load address: | 0000 |
| Exec address: | FFFFFFFF |
File contents
NICHECK NiCad CELL CHECK PROGRAM
Nicad rechargable cells are becoming increasingly cost effective
as power sources in all manner of portable equipment, but their use in
batteries (cells in series) can cause problems and disappointing
performance. Two related difficulties are overcharging and reverse
charging. This can occur in a battery since no two cells will have the
same capacity: a battery that appears exhausted may well have cells within
it that still have an appreciable charge. Not only will they reverse
charge other exhausted cells when the battery is in use, but they may be
overcharged during charging since they themselves are not exhausted. If
cells of similar capacity are used together these problems are largely
eliminated. It is the purpose of this little program to measure cell
capacities, and voltages under load.
The program uses the analogue port to measure the voltages of four cells
every second as they discharge through a resistance. Ohms Law is used to
calculate the load current, and the readings are summed to give the
capacity in milliamp-hours. For convenience readings are not taken until
each cell is inserted, and the display for each cell freezes when its
voltage falls to 0.8 volts. The value of the load resistance is up to
personal preference, bearing in mind the size of cell and the wattage of
the resistance. A safe value would give a load current of around
capacity/2 ma - in other words 4.7 ohm 1 watt for an AA cell, or 2.2 ohm
2 watt for a C cell. To speed the test up, considerably lower values can
be used, but be warned that Nicad cells are capable of suicidal currents
which can lead to overheating and damage, even explosion.
Run the program and enter the load value when requested. The approximate
anticipated current is then displayed (current will, of course, vary with
cell voltage). Connect up to four cells. The display will show the voltage
of each cell, and an increasing value for its life and capacity. The
voltage is a measure of the cell's ability to drive a load, and will
initially be over 1.25 volts for a healthy cell, settling at around
1.20 volts for most of the discharge period before falling rapidly as
exhaustion is reached. The final value for the cell's life at the chosen
load in minutes, and its capacity in milliamp-hours, can then be seen.
Grouping cells of similar capacity together will optimise their life and
performance, and make their use that much more predictable.
Because of the low accuracy of the analogue port's reference voltage, the
variable cal in line 110 may need to be altered so that the displayed
voltage agrees with the reading of an external voltmeter. If such a
facility is not to hand the actual capacity displayed may lose some
accuracy, but comparisons between cells will still be valid. Note also
that the maximum input voltage of the analogue port is 1.8 volts, so this
program MUST NOT be used to test other than single cells.
(c) E.Mark Jollife 09 Dec 1988
00000000 0d 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |.. | 00000010 20 20 4e 49 43 48 45 43 4b 20 4e 69 43 61 64 20 | NICHECK NiCad | 00000020 43 45 4c 4c 20 43 48 45 43 4b 20 50 52 4f 47 52 |CELL CHECK PROGR| 00000030 41 4d 0d 0d 4e 69 63 61 64 20 20 20 72 65 63 68 |AM..Nicad rech| 00000040 61 72 67 61 62 6c 65 20 20 20 63 65 6c 6c 73 20 |argable cells | 00000050 20 20 61 72 65 20 20 62 65 63 6f 6d 69 6e 67 20 | are becoming | 00000060 20 69 6e 63 72 65 61 73 69 6e 67 6c 79 20 20 63 | increasingly c| 00000070 6f 73 74 20 20 65 66 66 65 63 74 69 76 65 0a 0d |ost effective..| 00000080 61 73 20 20 70 6f 77 65 72 20 20 73 6f 75 72 63 |as power sourc| 00000090 65 73 20 20 69 6e 20 20 61 6c 6c 20 6d 61 6e 6e |es in all mann| 000000a0 65 72 20 6f 66 20 70 6f 72 74 61 62 6c 65 20 65 |er of portable e| 000000b0 71 75 69 70 6d 65 6e 74 2c 20 62 75 74 20 74 68 |quipment, but th| 000000c0 65 69 72 20 75 73 65 20 69 6e 0a 0d 62 61 74 74 |eir use in..batt| 000000d0 65 72 69 65 73 20 20 28 63 65 6c 6c 73 20 20 69 |eries (cells i| 000000e0 6e 20 20 73 65 72 69 65 73 29 20 20 63 61 6e 20 |n series) can | 000000f0 20 20 63 61 75 73 65 20 20 20 70 72 6f 62 6c 65 | cause proble| 00000100 6d 73 20 20 61 6e 64 20 20 64 69 73 61 70 70 6f |ms and disappo| 00000110 69 6e 74 69 6e 67 0a 0d 70 65 72 66 6f 72 6d 61 |inting..performa| 00000120 6e 63 65 2e 20 20 54 77 6f 20 20 72 65 6c 61 74 |nce. Two relat| 00000130 65 64 20 20 64 69 66 66 69 63 75 6c 74 69 65 73 |ed difficulties| 00000140 20 20 61 72 65 20 20 20 6f 76 65 72 63 68 61 72 | are overchar| 00000150 67 69 6e 67 20 20 61 6e 64 20 20 72 65 76 65 72 |ging and rever| 00000160 73 65 0a 0d 63 68 61 72 67 69 6e 67 2e 20 54 68 |se..charging. Th| 00000170 69 73 20 63 61 6e 20 6f 63 63 75 72 20 69 6e 20 |is can occur in | 00000180 20 61 20 20 62 61 74 74 65 72 79 20 20 73 69 6e | a battery sin| 00000190 63 65 20 20 6e 6f 20 74 77 6f 20 63 65 6c 6c 73 |ce no two cells| 000001a0 20 77 69 6c 6c 20 68 61 76 65 20 74 68 65 0a 0d | will have the..| 000001b0 73 61 6d 65 20 63 61 70 61 63 69 74 79 3a 20 61 |same capacity: a| 000001c0 20 62 61 74 74 65 72 79 20 74 68 61 74 20 61 70 | battery that ap| 000001d0 70 65 61 72 73 20 65 78 68 61 75 73 74 65 64 20 |pears exhausted | 000001e0 6d 61 79 20 77 65 6c 6c 20 68 61 76 65 20 63 65 |may well have ce| 000001f0 6c 6c 73 20 77 69 74 68 69 6e 0a 0d 69 74 20 20 |lls within..it | 00000200 74 68 61 74 20 20 73 74 69 6c 6c 20 20 68 61 76 |that still hav| 00000210 65 20 61 6e 20 61 70 70 72 65 63 69 61 62 6c 65 |e an appreciable| 00000220 20 63 68 61 72 67 65 2e 20 4e 6f 74 20 6f 6e 6c | charge. Not onl| 00000230 79 20 20 77 69 6c 6c 20 20 74 68 65 79 20 20 72 |y will they r| 00000240 65 76 65 72 73 65 0a 0d 63 68 61 72 67 65 20 6f |everse..charge o| 00000250 74 68 65 72 20 65 78 68 61 75 73 74 65 64 20 63 |ther exhausted c| 00000260 65 6c 6c 73 20 77 68 65 6e 20 20 74 68 65 20 62 |ells when the b| 00000270 61 74 74 65 72 79 20 69 73 20 69 6e 20 75 73 65 |attery is in use| 00000280 2c 20 62 75 74 20 74 68 65 79 20 6d 61 79 20 20 |, but they may | 00000290 62 65 0a 0d 6f 76 65 72 63 68 61 72 67 65 64 20 |be..overcharged | 000002a0 64 75 72 69 6e 67 20 63 68 61 72 67 69 6e 67 20 |during charging | 000002b0 73 69 6e 63 65 20 74 68 65 79 20 74 68 65 6d 73 |since they thems| 000002c0 65 6c 76 65 73 20 61 72 65 20 20 6e 6f 74 20 20 |elves are not | 000002d0 65 78 68 61 75 73 74 65 64 2e 20 20 49 66 0a 0d |exhausted. If..| 000002e0 63 65 6c 6c 73 20 20 6f 66 20 20 73 69 6d 69 6c |cells of simil| 000002f0 61 72 20 63 61 70 61 63 69 74 79 20 61 72 65 20 |ar capacity are | 00000300 75 73 65 64 20 74 6f 67 65 74 68 65 72 20 74 68 |used together th| 00000310 65 73 65 20 70 72 6f 62 6c 65 6d 73 20 20 61 72 |ese problems ar| 00000320 65 20 20 6c 61 72 67 65 6c 79 0a 0d 65 6c 69 6d |e largely..elim| 00000330 69 6e 61 74 65 64 2e 20 49 74 20 69 73 20 20 74 |inated. It is t| 00000340 68 65 20 20 70 75 72 70 6f 73 65 20 20 6f 66 20 |he purpose of | 00000350 20 74 68 69 73 20 20 6c 69 74 74 6c 65 20 20 70 | this little p| 00000360 72 6f 67 72 61 6d 20 74 6f 20 6d 65 61 73 75 72 |rogram to measur| 00000370 65 20 63 65 6c 6c 0a 0d 63 61 70 61 63 69 74 69 |e cell..capaciti| 00000380 65 73 2c 20 61 6e 64 20 76 6f 6c 74 61 67 65 73 |es, and voltages| 00000390 20 75 6e 64 65 72 20 6c 6f 61 64 2e 0a 0d 0a 0d | under load.....| 000003a0 54 68 65 20 70 72 6f 67 72 61 6d 20 75 73 65 73 |The program uses| 000003b0 20 74 68 65 20 61 6e 61 6c 6f 67 75 65 20 70 6f | the analogue po| 000003c0 72 74 20 74 6f 20 6d 65 61 73 75 72 65 20 74 68 |rt to measure th| 000003d0 65 20 20 76 6f 6c 74 61 67 65 73 20 20 6f 66 20 |e voltages of | 000003e0 66 6f 75 72 20 63 65 6c 6c 73 0a 0d 65 76 65 72 |four cells..ever| 000003f0 79 20 73 65 63 6f 6e 64 20 61 73 20 74 68 65 79 |y second as they| 00000400 20 64 69 73 63 68 61 72 67 65 20 74 68 72 6f 75 | discharge throu| 00000410 67 68 20 61 20 72 65 73 69 73 74 61 6e 63 65 2e |gh a resistance.| 00000420 20 4f 68 6d 73 20 4c 61 77 20 69 73 20 20 75 73 | Ohms Law is us| 00000430 65 64 20 20 74 6f 0a 0d 63 61 6c 63 75 6c 61 74 |ed to..calculat| 00000440 65 20 20 74 68 65 20 20 6c 6f 61 64 20 20 63 75 |e the load cu| 00000450 72 72 65 6e 74 2c 20 20 61 6e 64 20 20 74 68 65 |rrent, and the| 00000460 20 20 72 65 61 64 69 6e 67 73 20 20 61 72 65 20 | readings are | 00000470 73 75 6d 6d 65 64 20 74 6f 20 67 69 76 65 20 74 |summed to give t| 00000480 68 65 0a 0d 63 61 70 61 63 69 74 79 20 69 6e 20 |he..capacity in | 00000490 6d 69 6c 6c 69 61 6d 70 2d 68 6f 75 72 73 2e 20 |milliamp-hours. | 000004a0 46 6f 72 20 63 6f 6e 76 65 6e 69 65 6e 63 65 20 |For convenience | 000004b0 72 65 61 64 69 6e 67 73 20 61 72 65 20 6e 6f 74 |readings are not| 000004c0 20 20 74 61 6b 65 6e 20 20 75 6e 74 69 6c 0a 0d | taken until..| 000004d0 65 61 63 68 20 20 63 65 6c 6c 20 20 69 73 20 20 |each cell is | 000004e0 69 6e 73 65 72 74 65 64 2c 20 20 61 6e 64 20 20 |inserted, and | 000004f0 74 68 65 20 64 69 73 70 6c 61 79 20 66 6f 72 20 |the display for | 00000500 65 61 63 68 20 63 65 6c 6c 20 66 72 65 65 7a 65 |each cell freeze| 00000510 73 20 77 68 65 6e 20 69 74 73 0a 0d 76 6f 6c 74 |s when its..volt| 00000520 61 67 65 20 20 66 61 6c 6c 73 20 20 74 6f 20 20 |age falls to | 00000530 30 2e 38 20 20 76 6f 6c 74 73 2e 20 20 54 68 65 |0.8 volts. The| 00000540 20 76 61 6c 75 65 20 6f 66 20 74 68 65 20 6c 6f | value of the lo| 00000550 61 64 20 72 65 73 69 73 74 61 6e 63 65 20 69 73 |ad resistance is| 00000560 20 75 70 20 74 6f 0a 0d 70 65 72 73 6f 6e 61 6c | up to..personal| 00000570 20 70 72 65 66 65 72 65 6e 63 65 2c 20 62 65 61 | preference, bea| 00000580 72 69 6e 67 20 69 6e 20 6d 69 6e 64 20 74 68 65 |ring in mind the| 00000590 20 20 73 69 7a 65 20 20 6f 66 20 63 65 6c 6c 20 | size of cell | 000005a0 61 6e 64 20 74 68 65 20 77 61 74 74 61 67 65 20 |and the wattage | 000005b0 6f 66 0a 0d 74 68 65 20 20 72 65 73 69 73 74 61 |of..the resista| 000005c0 6e 63 65 2e 20 20 41 20 20 73 61 66 65 20 76 61 |nce. A safe va| 000005d0 6c 75 65 20 20 77 6f 75 6c 64 20 20 67 69 76 65 |lue would give| 000005e0 20 20 61 20 20 6c 6f 61 64 20 20 63 75 72 72 65 | a load curre| 000005f0 6e 74 20 20 6f 66 20 20 61 72 6f 75 6e 64 0a 0d |nt of around..| 00000600 63 61 70 61 63 69 74 79 2f 32 20 6d 61 20 2d 20 |capacity/2 ma - | 00000610 69 6e 20 6f 74 68 65 72 20 20 77 6f 72 64 73 20 |in other words | 00000620 34 2e 37 20 6f 68 6d 20 20 31 20 77 61 74 74 20 |4.7 ohm 1 watt | 00000630 66 6f 72 20 61 6e 20 41 41 20 63 65 6c 6c 2c 20 |for an AA cell, | 00000640 6f 72 20 32 2e 32 20 6f 68 6d 0a 0d 32 20 77 61 |or 2.2 ohm..2 wa| 00000650 74 74 20 66 6f 72 20 61 20 43 20 20 63 65 6c 6c |tt for a C cell| 00000660 2e 20 20 54 6f 20 73 70 65 65 64 20 74 68 65 20 |. To speed the | 00000670 74 65 73 74 20 75 70 2c 20 63 6f 6e 73 69 64 65 |test up, conside| 00000680 72 61 62 6c 79 20 6c 6f 77 65 72 20 76 61 6c 75 |rably lower valu| 00000690 65 73 20 63 61 6e 0a 0d 62 65 20 75 73 65 64 2c |es can..be used,| 000006a0 20 62 75 74 20 62 65 20 77 61 72 6e 65 64 20 74 | but be warned t| 000006b0 68 61 74 20 4e 69 63 61 64 20 20 63 65 6c 6c 73 |hat Nicad cells| 000006c0 20 20 61 72 65 20 63 61 70 61 62 6c 65 20 6f 66 | are capable of| 000006d0 20 73 75 69 63 69 64 61 6c 20 63 75 72 72 65 6e | suicidal curren| 000006e0 74 73 0a 0d 77 68 69 63 68 20 63 61 6e 20 6c 65 |ts..which can le| 000006f0 61 64 20 74 6f 20 6f 76 65 72 68 65 61 74 69 6e |ad to overheatin| 00000700 67 20 61 6e 64 20 64 61 6d 61 67 65 2c 20 65 76 |g and damage, ev| 00000710 65 6e 20 65 78 70 6c 6f 73 69 6f 6e 2e 0a 0d 0a |en explosion....| 00000720 0d 52 75 6e 20 74 68 65 20 70 72 6f 67 72 61 6d |.Run the program| 00000730 20 61 6e 64 20 65 6e 74 65 72 20 20 74 68 65 20 | and enter the | 00000740 20 6c 6f 61 64 20 76 61 6c 75 65 20 77 68 65 6e | load value when| 00000750 20 72 65 71 75 65 73 74 65 64 2e 20 54 68 65 20 | requested. The | 00000760 61 70 70 72 6f 78 69 6d 61 74 65 0a 0d 61 6e 74 |approximate..ant| 00000770 69 63 69 70 61 74 65 64 20 63 75 72 72 65 6e 74 |icipated current| 00000780 20 69 73 20 74 68 65 6e 20 64 69 73 70 6c 61 79 | is then display| 00000790 65 64 20 28 63 75 72 72 65 6e 74 20 77 69 6c 6c |ed (current will| 000007a0 2c 20 20 6f 66 20 63 6f 75 72 73 65 2c 20 76 61 |, of course, va| 000007b0 72 79 20 77 69 74 68 0a 0d 63 65 6c 6c 20 76 6f |ry with..cell vo| 000007c0 6c 74 61 67 65 29 2e 20 43 6f 6e 6e 65 63 74 20 |ltage). Connect | 000007d0 75 70 20 74 6f 20 66 6f 75 72 20 63 65 6c 6c 73 |up to four cells| 000007e0 2e 20 54 68 65 20 64 69 73 70 6c 61 79 20 77 69 |. The display wi| 000007f0 6c 6c 20 73 68 6f 77 20 74 68 65 20 76 6f 6c 74 |ll show the volt| 00000800 61 67 65 0a 0d 6f 66 20 20 65 61 63 68 20 63 65 |age..of each ce| 00000810 6c 6c 2c 20 61 6e 64 20 61 6e 20 69 6e 63 72 65 |ll, and an incre| 00000820 61 73 69 6e 67 20 76 61 6c 75 65 20 66 6f 72 20 |asing value for | 00000830 20 69 74 73 20 20 6c 69 66 65 20 20 61 6e 64 20 | its life and | 00000840 20 63 61 70 61 63 69 74 79 2e 20 20 54 68 65 0a | capacity. The.| 00000850 0d 76 6f 6c 74 61 67 65 20 69 73 20 20 61 20 20 |.voltage is a | 00000860 6d 65 61 73 75 72 65 20 20 6f 66 20 20 74 68 65 |measure of the| 00000870 20 20 63 65 6c 6c 27 73 20 20 61 62 69 6c 69 74 | cell's abilit| 00000880 79 20 74 6f 20 64 72 69 76 65 20 61 20 6c 6f 61 |y to drive a loa| 00000890 64 2c 20 61 6e 64 20 77 69 6c 6c 0a 0d 69 6e 69 |d, and will..ini| 000008a0 74 69 61 6c 6c 79 20 20 62 65 20 20 6f 76 65 72 |tially be over| 000008b0 20 20 31 2e 32 35 20 76 6f 6c 74 73 20 20 66 6f | 1.25 volts fo| 000008c0 72 20 20 61 20 68 65 61 6c 74 68 79 20 63 65 6c |r a healthy cel| 000008d0 6c 2c 20 20 73 65 74 74 6c 69 6e 67 20 20 61 74 |l, settling at| 000008e0 20 20 61 72 6f 75 6e 64 0a 0d 31 2e 32 30 20 76 | around..1.20 v| 000008f0 6f 6c 74 73 20 20 66 6f 72 20 6d 6f 73 74 20 6f |olts for most o| 00000900 66 20 74 68 65 20 64 69 73 63 68 61 72 67 65 20 |f the discharge | 00000910 20 70 65 72 69 6f 64 20 20 62 65 66 6f 72 65 20 | period before | 00000920 20 66 61 6c 6c 69 6e 67 20 20 72 61 70 69 64 6c | falling rapidl| 00000930 79 20 20 61 73 0a 0d 65 78 68 61 75 73 74 69 6f |y as..exhaustio| 00000940 6e 20 69 73 20 20 72 65 61 63 68 65 64 2e 20 20 |n is reached. | 00000950 54 68 65 20 66 69 6e 61 6c 20 76 61 6c 75 65 20 |The final value | 00000960 66 6f 72 20 74 68 65 20 63 65 6c 6c 27 73 20 6c |for the cell's l| 00000970 69 66 65 20 61 74 20 74 68 65 20 63 68 6f 73 65 |ife at the chose| 00000980 6e 0a 0d 6c 6f 61 64 20 69 6e 20 6d 69 6e 75 74 |n..load in minut| 00000990 65 73 2c 20 61 6e 64 20 20 69 74 73 20 20 63 61 |es, and its ca| 000009a0 70 61 63 69 74 79 20 20 69 6e 20 20 6d 69 6c 6c |pacity in mill| 000009b0 69 61 6d 70 2d 68 6f 75 72 73 2c 20 63 61 6e 20 |iamp-hours, can | 000009c0 74 68 65 6e 20 62 65 20 73 65 65 6e 2e 0a 0d 47 |then be seen...G| 000009d0 72 6f 75 70 69 6e 67 20 63 65 6c 6c 73 20 6f 66 |rouping cells of| 000009e0 20 73 69 6d 69 6c 61 72 20 63 61 70 61 63 69 74 | similar capacit| 000009f0 79 20 74 6f 67 65 74 68 65 72 20 77 69 6c 6c 20 |y together will | 00000a00 6f 70 74 69 6d 69 73 65 20 20 74 68 65 69 72 20 |optimise their | 00000a10 20 6c 69 66 65 20 61 6e 64 0a 0d 70 65 72 66 6f | life and..perfo| 00000a20 72 6d 61 6e 63 65 2c 20 61 6e 64 20 6d 61 6b 65 |rmance, and make| 00000a30 20 74 68 65 69 72 20 75 73 65 20 74 68 61 74 20 | their use that | 00000a40 6d 75 63 68 20 6d 6f 72 65 20 70 72 65 64 69 63 |much more predic| 00000a50 74 61 62 6c 65 2e 0a 0d 0a 0d 42 65 63 61 75 73 |table.....Becaus| 00000a60 65 20 20 6f 66 20 74 68 65 20 6c 6f 77 20 61 63 |e of the low ac| 00000a70 63 75 72 61 63 79 20 6f 66 20 74 68 65 20 61 6e |curacy of the an| 00000a80 61 6c 6f 67 75 65 20 70 6f 72 74 27 73 20 72 65 |alogue port's re| 00000a90 66 65 72 65 6e 63 65 20 76 6f 6c 74 61 67 65 2c |ference voltage,| 00000aa0 20 74 68 65 0a 0d 76 61 72 69 61 62 6c 65 20 63 | the..variable c| 00000ab0 61 6c 20 20 69 6e 20 20 6c 69 6e 65 20 20 31 31 |al in line 11| 00000ac0 30 20 20 6d 61 79 20 20 6e 65 65 64 20 74 6f 20 |0 may need to | 00000ad0 62 65 20 61 6c 74 65 72 65 64 20 73 6f 20 74 68 |be altered so th| 00000ae0 61 74 20 74 68 65 20 64 69 73 70 6c 61 79 65 64 |at the displayed| 00000af0 0a 0d 76 6f 6c 74 61 67 65 20 20 61 67 72 65 65 |..voltage agree| 00000b00 73 20 20 77 69 74 68 20 74 68 65 20 72 65 61 64 |s with the read| 00000b10 69 6e 67 20 6f 66 20 61 6e 20 20 65 78 74 65 72 |ing of an exter| 00000b20 6e 61 6c 20 20 76 6f 6c 74 6d 65 74 65 72 2e 20 |nal voltmeter. | 00000b30 20 49 66 20 20 73 75 63 68 20 20 61 0a 0d 66 61 | If such a..fa| 00000b40 63 69 6c 69 74 79 20 69 73 20 6e 6f 74 20 20 74 |cility is not t| 00000b50 6f 20 20 68 61 6e 64 20 20 74 68 65 20 20 61 63 |o hand the ac| 00000b60 74 75 61 6c 20 20 63 61 70 61 63 69 74 79 20 20 |tual capacity | 00000b70 64 69 73 70 6c 61 79 65 64 20 20 6d 61 79 20 6c |displayed may l| 00000b80 6f 73 65 20 73 6f 6d 65 0a 0d 61 63 63 75 72 61 |ose some..accura| 00000b90 63 79 2c 20 20 62 75 74 20 20 63 6f 6d 70 61 72 |cy, but compar| 00000ba0 69 73 6f 6e 73 20 20 62 65 74 77 65 65 6e 20 20 |isons between | 00000bb0 63 65 6c 6c 73 20 77 69 6c 6c 20 73 74 69 6c 6c |cells will still| 00000bc0 20 62 65 20 76 61 6c 69 64 2e 20 4e 6f 74 65 20 | be valid. Note | 00000bd0 61 6c 73 6f 0a 0d 74 68 61 74 20 74 68 65 20 6d |also..that the m| 00000be0 61 78 69 6d 75 6d 20 69 6e 70 75 74 20 76 6f 6c |aximum input vol| 00000bf0 74 61 67 65 20 20 6f 66 20 20 74 68 65 20 61 6e |tage of the an| 00000c00 61 6c 6f 67 75 65 20 70 6f 72 74 20 69 73 20 31 |alogue port is 1| 00000c10 2e 38 20 76 6f 6c 74 73 2c 20 73 6f 20 74 68 69 |.8 volts, so thi| 00000c20 73 0a 0d 70 72 6f 67 72 61 6d 20 4d 55 53 54 20 |s..program MUST | 00000c30 4e 4f 54 20 62 65 20 75 73 65 64 20 74 6f 20 74 |NOT be used to t| 00000c40 65 73 74 20 6f 74 68 65 72 20 74 68 61 6e 20 73 |est other than s| 00000c50 69 6e 67 6c 65 20 63 65 6c 6c 73 2e 0a 0d 0a 0d |ingle cells.....| 00000c60 28 63 29 20 45 2e 4d 61 72 6b 20 4a 6f 6c 6c 69 |(c) E.Mark Jolli| 00000c70 66 65 20 30 39 20 44 65 63 20 31 39 38 38 0a |fe 09 Dec 1988.| 00000c7f
25-08-89/NITXT.m0
25-08-89/NITXT.m1
25-08-89/NITXT.m2
25-08-89/NITXT.m4
25-08-89/NITXT.m5
.