Basic HTML Version
Flashlamp Circuit
DRIVE
POWER
The Microprocessor toggles the output of the 74LS374. When point 'A' is low, point 'B' the collector of the 2N5401
transistor is high. Once point 'B' is high, point
'C'
the collector of the TIP102 transistor is low. When Point
'C'
is low
the flashlamp is grounded through the transistor and the flashlamp tums On. When point
'A'
toggles high the circuit
shuts Off.
General illumination
DRIVE
POWER
JIIS
P_DrIYtr_d
vee
JII3
1
JI20
r.---..J....I6,u._~1
.1---....•
LS374
,----,
1
PloyIoId
"'_'1
L-
Up10II bUIIo
IP_D,;;II
1
I
_d
,...-J-+------LJI6I-L+--I---i
e.3voltHCOlldlry
L-
_1,
_J
5 volt ,ocondory
.__-~---t(POW"
onv.r
Board)
Block Diagram of General Illumination Circuit
When point "A" toggles low, then points "8" and "C" are high. This turns On the triac
and the desired General Illumination string lights.
The ADDAMS FAMILY 3-8