Page2of 2
Filename: 110display-b2.tcw
Date: 12/20/97
By:R. Fenske
110DISPLAY-B
SCHEMATIC
2
3
-12V
6
+12
+
-
U2
LF356
SIG -
+5V
GND
SIG. IN
1.234
SIG. -
(GND)
SIG. +
DISPLAY
+5V
SIGNAL+
FROMALL
PUSH-
BUTTONS
SEE
PAGE1
R19
10M
R18
1M
C10
0.01
uF
DISPLAYBUFFER
ANDZEROOFFSET
FROMACHOTBUS
BLOCK (UNSWITCHED)
FROMACNEUTRALBUS
BLOCK (UNSWITCHED)
TOAIRCOMPRESSOR+
TOAIRCOMPRESSOR -
AIRCOMPRESSOR
ON /OFFSWITCH
S5
5
1
+12V
20K
ZERO
POT
J1
PHONE JACK
FROM FID IGNITOR
ASSEMBLY
TOTALSETPOINT
PUSHBUTTON
ACTUAL
PUSHBUTTON
SIGNAL+
TODISPLAY
BUFFERAMP
SEEPAGE2
R1
100
OHM
R
G
Y
B
FID IGNITORORNPDVOLTS
PUSHBUTTONCIRCUITS
ONDISPLAYBOARD
YELLOWLED
INSTALLED
BACKWARDS
FORNEGATIVE
FID IGNITOR
ORNPD
VOLTAGE
FID IGNITOR
NORMALLY
CLOSED
MOMENTARY
ONSWITCH
(ELIMINATE
FORNPD)
S6
ac
ac
25AMP
BRIDGE
RECTIFIER
-
+
10VAC
INPUTFROM
TRANSFORMER
10000uF
CAPACITOR
FID IGNITORASSEMBLY
ONUPRIGHTMETAL
BRACKETONTHELEFT
SIDEOFTHECHASSIS
CIRCULATIONFAN
G
R
Y
B
1K
12VDC
INPUT
OUT
ADJ
100OHM
1WATT
IGNITOR/NPDBEAD
SETPOINT
VOLTAGE
PLUGS INTOPUSHTERMINALS
NEXTTODETECTORASSEMBLY
P1
1KFORFID IGNITOR
500OHMFORNPD
FID IGNITOR
ADJUSTMENT
POTP1 ISTYPICALLY
SETTO -400.
WHENMOMENTARY
SWITCH ISFLIPPED
UP, IGNITOR ISAT
MAXVOLTAGE.
(-1000)
LM338
BOTTOM
VIEW
+
HARD-WIRED
TOBRIDGE
1 OHMAT
ROOM TEMP.
2
FID IGNITOROR
NPDVOLTSCIRCUIT
DISPLAYDRIVERCIRCUIT
