Silicon Controlled Rectifiers; T2 Resistance Readings; T3 Resistance Readings; Scr1 Voltage Readings - Vivitar 283 Service Manual
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- Owner's manual (117 pages) ,
- Service manual (56 pages) ,
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Automatic Electronic Flash
Model 283
B. TRIGGER
TRANSFORMER
T2 WS·850TSL
Resistance
readings
between
leads-
transformer in circuit. (Table
4-8)
Table 4-8.
T2 Resistance Readings
T2
In
Circuit
LEADS
OHMS (APPROX.)
A to
C
130
A
to
B
130
C
to
B
0.2
C. TRIGGER TRANSFORMER T3 W-350TSL
Resistance readings between
leads-
transformer
in
circuit.
(Table 4-9)
Table 4-9.
T3
Resistance Readings
T3
In
Circuit
LEADS
OHMS (APPROX.)
A to C
40
A
to
B
40
C to
B
0.2
4.3.4
SILICON CONTROLLED RECTIFIERS
A. SCR1
CR02AM-1
Voltage
readings between lead
and
main
capacitor negative.
(Table 4-10)
Table
4-10.
SCR1 Voltage Readings
VOL
TS
(APPROX.)
LEADS
IDLING
·
RECYCLING
Anode
0.5
fluct.
+3.35
Gate
0.2
fluct.
+0.53
A-Anode
G ·Gate
Cathode
0.
0.
K
-
Cathode
c
c
G
A
K
Vivltar 37460598
A
A
A
G
K
(11
/
80)
23
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