Star Tech Journal
Issue: 1983-September - Vol 5 Issue 7 - Page 6
STAR*TECH JOURNAL/SEPTEMBER 1983
6
0.E.M. Replacement
Monitor
13"-$170
19"-$188
Guarantee 90 Days Exchange
* SERIES
AND PARALLEL RESISTANCE/CAPACITANCE CIRCUITS
* * NON-VIDEO
GAME TROUBLESHOOTING (PART 2)
BALLY BABY PAC-MAN POWER-UP PROBLEM
By Mark "Bear'' Attebery, Vending International Corp., San Juan Capistrano, CA
Hello out there! Future Tech Lesson #7 is going into resistance and capacitance series circuits and
parallel circuits. The first thing you should do is purchase a calculator with scientific functions! This
calculator does not have to be expensive! There are many inexpensive ($14-$20) calculators that are
more than sufficient for 99% of a technician's needs.
Next, you must learn four formulae. Number one being more of a rule than a formula, that states
when resistances are connected in series, you simply add all of the resistance values together to find
the RT or total resistance. Here are two examples:
Superior
Brightness,
Clarity, Sharpness.
Rl + R2 + R3 = RT
~
1.2k + 3k + 1.8k = 6k
1.qK
For Info. Call: (213) 768-7144
•
RI
spectra
R'3
-VIS/On
Sun Valley, California
1.5"K
Rl + R2 + R3 = RT
1.9k + .6k + 1.5k = 4k
The second rule leans more toward the formula side. When capacitors are placed in series, the
total capacitance is found as follows:
!
1
1 = CT or capacitance total
Cl+ C2 + CJ
Using the formula above, try to find the value of CT.
1,1,J
~VIDEO
~GAME
TROUBIISHOmNG
GUIDE
FOR
VIDEO
T
10.uf-
'~Hr~~
I'm using a Texas Instuments Model No. 55 calculator that sells for approximately $35. If you're
having trouble doing the above formula, let me show you on this calculator that has algebraic functions
how this operation is carried out I'm going to give you the keys that you should punch in the following
order from left to right
GAMES
• CUT TO THE PROBLEM IN SECONDS
• EASY TO UNDERSTAND
• DESIGNED FOR OPERATORS,
ARCADE OWNERS & TECHNICIANS
• LAMINATED FOR DURABILITY
• UNCONDITIONAL MONEY BACK
GUARANTEE
CHECK OR
MONEY ORDER OR
SEND
■
COD
$12 95
------------
IIDEO
J;
3..F
Please send
6
*
I . I 6 I 1+ 1 -I 6 I I + I 3 I 1+ 1 -I
I I + I I I I +/-1 I I + I I
*
EE
1
0
EE
* *
EE
6
And your answer will be 944.882pf or .945uf! Easy, wasn't it? Well, if you have any questions or
doubts, there will be several problems to practice on at the end of this article. The third formula is for
finding the total resistance or RT of a parallel circuit and is really the same formula as used for finding
total capacitances in a series circuit The only difference is that resistance ( or Rl) is used instead of
capacitance (or Cl).
I TROUBLESHOOTING VIDEO CHARTS.
I
GUIDE
TOTAL ENCLOSED
I 515 s. SHAW
I RICHMOND, MO 64085 SHIP. CHG. INC.
I TO SEND C.O.D. CALL 816/776-5938
I
I
L-~~:...~..: ________ J
NAME - - - - - - - - - -
;
ADDRESS________
And the key pad order on your calculator is as follows:
Continued next page.
6
0.E.M. Replacement
Monitor
13"-$170
19"-$188
Guarantee 90 Days Exchange
* SERIES
AND PARALLEL RESISTANCE/CAPACITANCE CIRCUITS
* * NON-VIDEO
GAME TROUBLESHOOTING (PART 2)
BALLY BABY PAC-MAN POWER-UP PROBLEM
By Mark "Bear'' Attebery, Vending International Corp., San Juan Capistrano, CA
Hello out there! Future Tech Lesson #7 is going into resistance and capacitance series circuits and
parallel circuits. The first thing you should do is purchase a calculator with scientific functions! This
calculator does not have to be expensive! There are many inexpensive ($14-$20) calculators that are
more than sufficient for 99% of a technician's needs.
Next, you must learn four formulae. Number one being more of a rule than a formula, that states
when resistances are connected in series, you simply add all of the resistance values together to find
the RT or total resistance. Here are two examples:
Superior
Brightness,
Clarity, Sharpness.
Rl + R2 + R3 = RT
~
1.2k + 3k + 1.8k = 6k
1.qK
For Info. Call: (213) 768-7144
•
RI
spectra
R'3
-VIS/On
Sun Valley, California
1.5"K
Rl + R2 + R3 = RT
1.9k + .6k + 1.5k = 4k
The second rule leans more toward the formula side. When capacitors are placed in series, the
total capacitance is found as follows:
!
1
1 = CT or capacitance total
Cl+ C2 + CJ
Using the formula above, try to find the value of CT.
1,1,J
~VIDEO
~GAME
TROUBIISHOmNG
GUIDE
FOR
VIDEO
T
10.uf-
'~Hr~~
I'm using a Texas Instuments Model No. 55 calculator that sells for approximately $35. If you're
having trouble doing the above formula, let me show you on this calculator that has algebraic functions
how this operation is carried out I'm going to give you the keys that you should punch in the following
order from left to right
GAMES
• CUT TO THE PROBLEM IN SECONDS
• EASY TO UNDERSTAND
• DESIGNED FOR OPERATORS,
ARCADE OWNERS & TECHNICIANS
• LAMINATED FOR DURABILITY
• UNCONDITIONAL MONEY BACK
GUARANTEE
CHECK OR
MONEY ORDER OR
SEND
■
COD
$12 95
------------
IIDEO
J;
3..F
Please send
6
*
I . I 6 I 1+ 1 -I 6 I I + I 3 I 1+ 1 -I
I I + I I I I +/-1 I I + I I
*
EE
1
0
EE
* *
EE
6
And your answer will be 944.882pf or .945uf! Easy, wasn't it? Well, if you have any questions or
doubts, there will be several problems to practice on at the end of this article. The third formula is for
finding the total resistance or RT of a parallel circuit and is really the same formula as used for finding
total capacitances in a series circuit The only difference is that resistance ( or Rl) is used instead of
capacitance (or Cl).
I TROUBLESHOOTING VIDEO CHARTS.
I
GUIDE
TOTAL ENCLOSED
I 515 s. SHAW
I RICHMOND, MO 64085 SHIP. CHG. INC.
I TO SEND C.O.D. CALL 816/776-5938
I
I
L-~~:...~..: ________ J
NAME - - - - - - - - - -
;
ADDRESS________
And the key pad order on your calculator is as follows:
Continued next page.
Future scanning projects are planned by the International Arcade Museum Library (IAML).