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Left Flipper Circuit
Flipper Coil Circuits
Right flipper Circuit
1
FUPTRONIC II BOARD
r-
_
I
1
FUPTRONIC II BOARD
Playfleld
Playfleld
Power
Hold in
6~~~~~~P~ow~e~r------_T----+_J
Hoidin
51-+--'-!:!=~~
Upper left
End-ot-Stroke
~==~
Switch
6
4
,
'Slack·Green
Lower Right
,
End-ot-Stroke
,Orange Switch
,
,Black-Violet
,
Upper Right
'Orange End-ot-Stroke
L...J..=~--l
Switch
J906
31---'-==~:;;:;
Lower left
End-ot-Stroke
Switch
J906
Flipper End-of-StrQke Switches
F1 Lower Right Flipper
F5 Upper Right Flipper
F3 Lower Left Flipper
F7 Upper Left Flipper
~F-UPTRONIC
il - - :
1
BOARD
J906
1
1
1
Black-Green
3
1
Black-Blue
4
1
Black-Violet
5
1
Black-Gray
·-------------------------1
1
FUPTRONiC II BOARD
+5V
1
Orange
1
J906
I
End-of-StTok' Switch
1N4004
1
1----..•.....
--<
'1-_...:..A;:_---4~ __
~-l
X : Black-xxx 0
-
1
1-
~
Dedicated Input
I
1
Orange
~---l6~-~--------~
: 74HCT244
':'
1
I
-------------------~
The flipper switch circuits operate similar to the dedicated switch circuit. The circuits are active low and tied to
ground through the switch.
When a switch closes the row side (dedicated input) of the clrcult activates. The"
+"
input to the LM339 drops below
+5V therefore its output is low. Since the row (dedicated input) circuit is tied directly to ground through the sw~ch,
the sw~ch is considered closed by the microprocessor. When the switch opens, the" +. input to the LM339 is above
+5V, tts output is high and the row (dedicated input) is inactive.
DEMOLrr/ON MAN 3-12