Q2004K31V
| Model | Q2004K31V |
| Description | Thyristor Product Catalog |
| PDF file | Total 224 pages (File size: 3M) |
| Chip Manufacturer | TECCOR |
Application Notes
AN1006
3. Set
Max Peak Volts
to
75 V.
(80
V
on 370)
4. Set
Mode
to
DC.
5. Set
Horizontal
knob to
Step Generator.
6. Set
Vertical
knob to approximately 10% of the maximum I
H
specified.
Note: Due to large variation of holding current values, the
scale may have to be adjusted to observe holding current.
7. Set
Number of Steps
to
1.
8. Set
Step/Offset Polarity
to non-inverted (button extended,
on 577 button depressed).
9. Set
Offset
by depressing
0
(zero). (Press
Aid
and Oppose at
same time on 370.)
10. Set
Terminal Selector
to
Step Generator-Emitter Grounded.
Procedure 10: I
GT
To measure the I
GT
parameter:
1. Set
Polarity
to (+).
2. Set
Number of Steps
to
1.
(Set number of steps to
0
(zero)
on 370.)
3. Set
Offset
by depressing
Aid.
(On 577, also set
Zero
button
to
Offset.
Button is extended.)
4. Set
Offset Multiplier
to
0
(zero). (Press
Aid
and
Oppose
at
same time on 370.)
5. Set
Terminal Selector
to
Step Generator-Emitter Grounded.
6. Set
Mode
to
Norm.
7. Set
Max Peak Volts
to
15 V.
(16
V
on 370)
8. Set
Power Dissipation
to
10 W.
9. Set
Step Family
by depressing
Single.
10. Set
Horizontal
knob to
2 V/DIV.
11. Set
Vertical
knob to
50 mA/DIV.
12. Set
Step/Offset Polarity
to non-inverted position (button
extended, on 577 button depressed).
13. Set
Variable Collector Supply Voltage
until voltage
reaches 12 V on CRT.
14. After 12 V setting is completed, change
Horizontal
knob to
Step Generator.
Procedure 8: I
H(Forward)
To measure the I
H (Forward)
parameter:
1. Set
Polarity
to (+).
2. Set
Left-Right Terminal Jack Selector
to correspond with
location of test fixture.
3. Increase
Variable Collector Supply Voltage
to maximum
position (100).
4. Set
Step Family
by depressing
Single.
This could possibly cause the dot on the CRT to disappear,
depending on the vertical scale selected).
5. Decrease
Variable Collector Supply Voltage
to the point
where the line on the CRT changes to a dot. The position of
the beginning point of the line, just before the line becomes a
dot, represents the holding current value.
(Figure AN1006.13)
PER
Procedure 11: I
GT
– Quadrant I [MT2 (+) Gate (+)]
To measure the I
GT
– Quadrant I parameter:
1. Set
Step/Offset Amplitude
to approximately 10% of rated
I
GT
.
2. Set
Left-Right Terminal Jack Selector
to correspond with
location of test fixture.
3. Gradually increase
Offset Multiplier
until device reaches
conduction point. (Figure AN1006.14) Measure I
GT
by follow-
ing horizontal axis to the point where the vertical line passes
through the axis. This measured value is I
GT
. (On 370, I
GT
is
numerically displayed on screen under offset value.)
PER
V
E
R
T
DIV
5
mA
PER
H
O
R
I
Z
DIV
PER
S
T
E
P
50
mA
V
E
R
T
DIV
50
mA
IH
Figure AN1006.13 I
H (Forward)
= 8.2 mA
()k
DIV
9m
PER
DIV
PER
100m
H
O
R
I
Z
DIV
PER
Procedure 9: I
H(Reverse)
To measure the I
H (Reverse)
parameter:
1. Set
Polarity
to (–).
2. Repeat Procedure 7 measuring I
H(Reverse)
. (Read measure-
ments from upper right corner of the screen.)
S
T
E
P
5
mA
IGT
Figure AN1006.14 I
GT
in Quadrant I = 18.8 mA
()k
DIV
9m
PER
DIV
10
©2002 Teccor Electronics
Thyristor Product Catalog
AN1006 - 9
http://www.teccor.com
+1 972-580-7777
