Q2004L31V
| Model | Q2004L31V |
| Description | Thyristor Product Catalog |
| PDF file | Total 224 pages (File size: 3M) |
| Chip Manufacturer | TECCOR |
AN1006
Application Notes
Procedure 12: I
GT
– Quadrant II [MT2 (+) Gate (-)]
To measure the I
GT
– Quadrant II parameter:
1. Set
Step/Offside Polarity
by depressing Invert (release but-
ton on 577).
2. Set
Polarity
to (+).
3. Set observed dot to bottom right corner of CRT grid by turn-
ing the horizontal position knob. When Quadrant II testing is
complete, return dot to original position.
4. Repeat Procedure 11.
9. Set
Step Family
by depressing
Single.
10. Set
Horizontal
knob to
2 V/DIV.
11. Set
Step/Offset Polarity
to non-inverted position (button
extended, on 577 button depressed).
12. Set
Current Limit
to 500 mA (not available on 577).
13. Increase
Variable Collector Supply Voltage
until voltage
reaches 12 V on CRT.
14. After 12 V setting is complete, change
Horizontal
knob to
Step Generator.
Procedure 13: I
GT
– Quadrant III [MT2 (-) Gate (-)]
To measure the I
GT
– Quadrant III parameter:
1. Set
Polarity
to (–).
2. Set
Step/Offset Polarity
to non-inverted position (button
extended, on 577 button depressed).
3. Repeat Procedure 11. (Figure AN1006.15)
PER
Procedure 16: V
GT
– Quadrant I [MT2 (+) Gate (+)]
To measure the V
GT
– Quadrant I parameter:
1. Set
Step/Offset Amplitude
to 20% of rated V
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 AN1006.16) Measure V
GT
by fol-
lowing horizontal axis to the point where the vertical line
passes through the axis. This measured value will be V
GT
.
(On 370, V
GT
will be numerically displayed on screen under
offset value.)
PER
IGT
V
E
R
T
DIV
50
mA
PER
H
O
R
I
Z
DIV
V
E
R
T
DIV
50
mA
PER
S
T
E
P
5
mA
PER
()k
DIV
9m
PER
DIV
VGT
10
H
O
R
I
Z
DIV
PER
Figure AN1006.15 I
GT
in Quadrant III = 27 mA
S
T
E
P
500
mV
Procedure 14: I
GT
– Quadrant IV [MT2 (-) Gate (+)]
To measure the I
GT
– Quadrant IV parameter:
1. Set
Polarity
to (–).
2. Set
Step/Offset Polarity
by depressing
Invert
(release but-
ton on 577).
3. Set observed dot to top left corner of CRT grid by turning the
Horizontal
position knob. When Quadrant IV testing is com-
plete, return dot to original position.
4. Repeat Procedure 11.
Figure AN1006.16 V
GT
in Quadrant I = 780 mV
()k
DIV
9m
PER
DIV
100m
Procedure 17: V
GT
– Quadrant II [MT2 (+) Gate (-)]
To measure the V
GT
– Quadrant II parameter:
1. Set
Step/Offset Polarity
by depressing
Invert
(release but-
ton on 577).
2. Set
Polarity
to (+).
3. Set observed dot to bottom right corner of CRT grid by turn-
ing the horizontal position knob. When Quadrant II testing is
complete, return dot to original position.
4. Repeat Procedure 16.
Procedure 15: V
GT
To measure the V
GT
parameter:
1. Set
Polarity
to (+).
2. Set
Number of Steps
to
1.
(Set steps to
0
(zero) on 370.)
3. Set
Offset
by depressing
Aid.
(On 577, also set
0
(zero) but-
ton 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.
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Procedure 18: V
GT
– Quadrant III [MT2 (-) Gate (-)]
To measure the V
GT
– Quadrant III parameter:
1. Set
Polarity
to (–).
2. Set
Step/Offset Polarity
to non-inverted position (button
extended, on 577 button depressed).
AN1006 - 10
©2002 Teccor Electronics
Thyristor Product Catalog
