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FALL <strong>1980</strong> THE APPLE ORCHARD PAGE 69<br />
Dont Overload . .. from page 68<br />
CHART A<br />
The currents measured (note 1) were from off the shelf products and could have small variations from one unit to the<br />
next. The figures should be used to give an approximate total.<br />
All values on the chart are in MA (Milliamps, 1000 ma= 1 amp).<br />
EQUIPMENT<br />
MODEL<br />
+S VOLT<br />
NOTE<br />
OFF<br />
ON<br />
+12 VOLT<br />
DIFF<br />
OFF<br />
ON<br />
DIFF<br />
APPLE<br />
Serial<br />
Communications<br />
Parallel<br />
<strong>Apple</strong>soft<br />
Language System<br />
Disk Controller<br />
Disk Controller<br />
Graphics Tablet<br />
Silentype<br />
MT. HARDWARE<br />
Clock<br />
ROM +<br />
Super Talker<br />
lntrol/ X-10<br />
A2BOOOS<br />
A2B0003<br />
A2B0002<br />
A2B0009<br />
A2B0006<br />
A2M0004 one drive<br />
A2M0004 two drives<br />
A2M0029<br />
A2M0036<br />
MHP-X003<br />
MHP-X007<br />
MHP-X006<br />
MHP-X016<br />
CALIFORNIA COMPUTER SYSTEMS<br />
PTM-1<br />
7440A<br />
GPIB Interface 7490A<br />
Parallel<br />
7720AB<br />
A I D Converter 7470A<br />
Serial<br />
7712A<br />
Arithmetric<br />
7811A<br />
80 COLUMN BOARDS<br />
VIDEX<br />
Videoterm<br />
Computer Stop DOUBLEVISION<br />
M&R Enterprises SUP'R'TERMINAL<br />
MISCELLANEOUS<br />
SVA DISK<br />
8" Controller<br />
ALF<br />
Music<br />
Micro Music<br />
K-1002-4(A)<br />
SSM<br />
AIO<br />
DC HAYES<br />
Modem II<br />
HURESTIC<br />
Talker<br />
WCAI<br />
Video<br />
TRENDCOM Mod A2<br />
TRENDCOM<br />
Mq_d A2G<br />
Corvus<br />
Hard Disk<br />
SYMTSC<br />
Lightpen<br />
CMP Keypad<br />
79A002-C<br />
Microworks<br />
Videocard DS6S<br />
WestSide Elec APT-1 clock<br />
Microproducts NP77101<br />
Malibu Printer Card<br />
2<br />
2<br />
3<br />
4<br />
s<br />
6<br />
6<br />
38<br />
82<br />
60<br />
381<br />
168<br />
180<br />
249<br />
201<br />
29S<br />
S8<br />
186<br />
S7<br />
37<br />
7S<br />
3SO<br />
S2<br />
30<br />
10S<br />
62<br />
47S<br />
603<br />
390<br />
S10<br />
107<br />
6S<br />
170<br />
184<br />
171<br />
111<br />
140<br />
9S<br />
16S<br />
170<br />
109<br />
3SS<br />
40<br />
122<br />
22S<br />
166<br />
196<br />
13S<br />
411<br />
168<br />
27S<br />
3S1<br />
201<br />
29S<br />
S8<br />
186<br />
116<br />
108<br />
7S<br />
40S<br />
24S<br />
30<br />
298<br />
62<br />
47S<br />
603<br />
390<br />
S30<br />
107<br />
6S<br />
340<br />
194<br />
171<br />
236<br />
140<br />
9S<br />
17S<br />
180<br />
22S<br />
33S<br />
40<br />
122<br />
410<br />
128<br />
114<br />
7S<br />
30<br />
9S<br />
102<br />
S9<br />
71<br />
SS<br />
193<br />
193<br />
20<br />
170<br />
10<br />
12S<br />
10<br />
10<br />
116<br />
18S<br />
7<br />
14<br />
24<br />
32<br />
14<br />
\ -<br />
so<br />
17<br />
48<br />
40<br />
200<br />
3S<br />
16<br />
37S<br />
63<br />
46<br />
2S<br />
422<br />
422<br />
24<br />
S80<br />
32<br />
2S<br />
so<br />
17<br />
48<br />
40<br />
200<br />
35<br />
16<br />
375<br />
63<br />
46<br />
2S<br />
41S<br />
408<br />
S80<br />
11<br />
NOTES<br />
1. The tests were performed using<br />
a Hewlett Packard HP970A Probe<br />
Multimeter with a Current Shunt/<br />
Bench Cradle attachment. Specified<br />
accuracy of plus or minus 2.5%<br />
of reading. A standard 50 pin, 1"<br />
high, standoff plug with pin number<br />
25 (+5v) and number 50 (+12v)<br />
lines cut and series wires attached<br />
to be used with the meter (figure 21<br />
on page 106 of reference manual<br />
show connector pinout).<br />
2. When the disk drive first turns<br />
on, the starting torture of the<br />
motor causes the unit to draw<br />
about 700 ma of +12V current for a<br />
second of two, then it draws the 422<br />
ma while running. The values for<br />
one or two drives are measurements<br />
using one controller card.<br />
3. The current for the +12v supply<br />
varies from 200 to 580 ma when the<br />
unit is printing.<br />
4. The figures for the Videoterm<br />
were measured without a graphic<br />
EPROM (2708) in the unit.<br />
5. The D.C. Hayes draws an extra<br />
amount of +5v current, about 10 ma<br />
when in the dialing mode.<br />
6. The model A2 is without<br />
graphics and the model A2G is with<br />
graphics.
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