Basic HTML Version
Left Flipper Circuit
:- FLIPTRONIC-llBOAR-O- - - - - - - ,
Flipper Coil Circuits
Right Flipper Circuit
~ -FLIPlRONIC
ii
BOARD - - - - - - ~
Power
Green Holdin
Upper Right
Flipper
Power
Holdin
J906
J906
Upper Left
End-of-Stroke
SWitch
6
4
I
I
Black-Green
Lower Right
End-of-Stroke
'Orange Switch
Lower Left
End-of·Stroke
Switch
1--.-+'=='---'
,Black-Violet
Upper Right
End-of-Stroke
Switch
'Orange
I
•. - - - - - - - - - - - - - - - - - - _I
1
I
Flipper End-of-Stroke Switches
----------
F1 Lower Right Flipper 'FLIPTRONIC"
F5 Upper Right Flipper ,'BOARO
I
J906 ,
1 ' Black·Green
F3 Lower Left Flipper
F7 Upper Left Flipper
3 '
Black·Blue
5~~~~~
__
~~~-o
, Orange
J906
I
End-of-Stroke SWitch
,
1K
A
1
N4004 X :
Black-xxx
0
, 74HCT244
Dedicated Input
: Orange
.-----161--'----=-------'
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 circuit 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 switch,
the switch is considered closed by the microprocessor. When the switch opens, the
.+"
input to the
LM339
is above
-~/
+5V, its output is high and the row (dedicated input) is inactive.
Twilight Zone 3-26