Basic HTML Version
fLIPPER COIL CIRCUIT
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f~ C IR CUI T
RIGHT FLIPPER CIRCuiT
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I
I PLAYFIELD
J906
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BLACK -BLUE
_ LOWER LEFT
ORANGl
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°
S. SWITCH
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,BLACK-GRAY
-
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'
UPPERLEn
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ORA~GD E 0 S SWITCY
- - - - - - -- -- - - _ j
J906
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B_ACK-G~[CN
--,
- 1 LOWO:R R'GHT
,6 ,ORANGE"
E.OS SWliCCI
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IBLACK-VIOl.ET
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ljDPER
RIGHT
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r.o.s.
SWi'CH
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FI_ PT;:;:ONIC II
BClAF\D
FLiPTRONIC II
BOARD
fLIPPER END-Of-STROKE SWITCH CIRCUIT
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I_OWER
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'UPPe--P
RIG'~: FL
PPER
I_ErT Fi__ PPER
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BLACK-GRAY
(U6C-9)
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LQ.RANGE .,------.---
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~1 PTRON C 'I BOARD
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C906
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V!---r?LACK-XXX~..,
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SW;TCH
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B
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OPFN
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CL.OSED
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The flipper E.O.S. 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 of 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.
3-12