Play Meter
Issue: 1981 July 15 - Vol 7 Num 13 - Page 62
150 0
Fig . 1
BREADBOARD/
Lesson Thirteen
Monostable
Flip-Flop Design
1. Wire-up the c ircuit in fig . 1 on
the breadboa rd . Before appl ying
power, set S1 in the hig h (H)
position .
2. Apply power, both - 6V and
+3V. The lamp co rrespond ing to
02 should be off.
Transisto r 0 2 is in satura-
tion and the o utput is at a log ic 0 .
The base of transisto r 0 1 is
positive and , theref ore, reversed
biased since it is co nn ected to the
output. The circ uit is ope rat ing in
the stable state .
3. Set S2 to the low (L) position .
The flip-flop shou ld change state .
Then it returns to the stab le state
without being triggered .
When S1 was switched to
the low position , the leading edge
of the step waveform was
differentiated and a posit ive
going spike was applied to the
base of 02. Transistor 02 was
then driven out of saturation and
01 came on. 02 remained off until
the capacitor, C , discharged
through the 2.7K resistor. When C
discharged 02 again saturated
and the circuit returned to the
stable state .
The student would find the
waveforms at the base of 02 and
collector of 01 of interest .
4 . Set S1 to the high (H)
position . The flip-flop does not
change state. When 81 was
changed to the high position , a
negative going trigger spike was
developed . However, the diode is
reverse biased to a spike of this
polarity and the spike is ,
therefore, blocked .
PLAY METER , July 15, 1981
•Rely on our reputation for top quality equipment and service
•Our new 70,000 square foot facility enables us to carry a large
inventory of new and used equipment
•Call or write us and we'll put you on our mailing list to receive
our equipment bulletins
TOLL FREE (outside Ohio) 1-800-321-3072
RepresentlniP Amstar • Atarl • American Shuffleboard • Bally
Clnematronlcs • Data East • Exldy • Electro-Sport • Game Plan
Gremlin • Irving Kaye •lnterm"ark • Loktro Vend • Midway • Nlchlbutsu
Rock-Oia Music and Vending • Sega • Stern • Talto • U.S. Billiards
MONROE DISTRIBUTING, INC.
2999 Payne Ave.
Cleveland, Ohio 44114
216/ 781·4600
Telex: 98·0197
1424 Stanley Ave.
Dayton, Ohio 45404
513/ 233·0550
Telex: 28·8098
Palm etto La k ~fnd. Perk
530 1 N. W. 161st St.
H ialeah Lakes, FL 33014
305/ 625·6666
Put
PUTT· PUTT@ GOLF U GAMES
in your town!
Since 1954,
the world's leading franchisor
of putting courses
(with over 1,000 courses worldwide]
offers joint
PUTT· PUTT® Golf Courses and
Gamerooms ~
with locations now in 10~ cities.
PUTT·PUTT®Golf Courses are tbe ac:lditftre that
offers longevity to Gameroom success. Own JVQr
own location with appreciation in real estate.
For detaila contact:
Nell Buie, Franchise Director
PUTT·PlJTT"GGlf Courses Of .A r r rica, IDC. .
P. o. Box ~s2n
~
FayettevilJe, North Caro11aa ~ D.J
~PUTT
Telephone (919] 485-71.31
._. 'h'
....
63
Fig . 1
BREADBOARD/
Lesson Thirteen
Monostable
Flip-Flop Design
1. Wire-up the c ircuit in fig . 1 on
the breadboa rd . Before appl ying
power, set S1 in the hig h (H)
position .
2. Apply power, both - 6V and
+3V. The lamp co rrespond ing to
02 should be off.
Transisto r 0 2 is in satura-
tion and the o utput is at a log ic 0 .
The base of transisto r 0 1 is
positive and , theref ore, reversed
biased since it is co nn ected to the
output. The circ uit is ope rat ing in
the stable state .
3. Set S2 to the low (L) position .
The flip-flop shou ld change state .
Then it returns to the stab le state
without being triggered .
When S1 was switched to
the low position , the leading edge
of the step waveform was
differentiated and a posit ive
going spike was applied to the
base of 02. Transistor 02 was
then driven out of saturation and
01 came on. 02 remained off until
the capacitor, C , discharged
through the 2.7K resistor. When C
discharged 02 again saturated
and the circuit returned to the
stable state .
The student would find the
waveforms at the base of 02 and
collector of 01 of interest .
4 . Set S1 to the high (H)
position . The flip-flop does not
change state. When 81 was
changed to the high position , a
negative going trigger spike was
developed . However, the diode is
reverse biased to a spike of this
polarity and the spike is ,
therefore, blocked .
PLAY METER , July 15, 1981
•Rely on our reputation for top quality equipment and service
•Our new 70,000 square foot facility enables us to carry a large
inventory of new and used equipment
•Call or write us and we'll put you on our mailing list to receive
our equipment bulletins
TOLL FREE (outside Ohio) 1-800-321-3072
RepresentlniP Amstar • Atarl • American Shuffleboard • Bally
Clnematronlcs • Data East • Exldy • Electro-Sport • Game Plan
Gremlin • Irving Kaye •lnterm"ark • Loktro Vend • Midway • Nlchlbutsu
Rock-Oia Music and Vending • Sega • Stern • Talto • U.S. Billiards
MONROE DISTRIBUTING, INC.
2999 Payne Ave.
Cleveland, Ohio 44114
216/ 781·4600
Telex: 98·0197
1424 Stanley Ave.
Dayton, Ohio 45404
513/ 233·0550
Telex: 28·8098
Palm etto La k ~fnd. Perk
530 1 N. W. 161st St.
H ialeah Lakes, FL 33014
305/ 625·6666
Put
PUTT· PUTT@ GOLF U GAMES
in your town!
Since 1954,
the world's leading franchisor
of putting courses
(with over 1,000 courses worldwide]
offers joint
PUTT· PUTT® Golf Courses and
Gamerooms ~
with locations now in 10~ cities.
PUTT·PUTT®Golf Courses are tbe ac:lditftre that
offers longevity to Gameroom success. Own JVQr
own location with appreciation in real estate.
For detaila contact:
Nell Buie, Franchise Director
PUTT·PlJTT"GGlf Courses Of .A r r rica, IDC. .
P. o. Box ~s2n
~
FayettevilJe, North Caro11aa ~ D.J
~PUTT
Telephone (919] 485-71.31
._. 'h'
....
63
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