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| 型號(hào)： | BCR3AS-12 |
| 英文描述： | Thyristor Product Catalog |
| 中文描述： | 晶閘管產(chǎn)品目錄 |
| 文件頁(yè)數(shù)： | 158/224頁(yè) |
| 文件大?。?/td> | 2697K |
| 代理商： | BCR3AS-12 |
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AN1006
Application Notes
http://www.teccor.com
+1 972-580-7777
AN1006 - 6
2002 Teccor Electronics
Thyristor Product Catalog
6. Set
Rate
by depressing
Norm
.
7. Set
Step Family
by depressing
Rep
(repetitive).
8. Set
Mode
to
DC
.
9. Set
Horizontal
knob to
0.5 V/DIV
.
10. Set
Power Dissipation
to
220 W
(
100 W
on 577).
11. Set
Number of Steps
to
1
. (Set steps to
0
(zero) on 370.)
12. Set
Vertical
knob to a sufficient setting to allow the viewing
of 2 times the I
T(RMS)
rating of the device (I
T(peak)
) on CRT.
Before continuing with testing, note the following:
(1) Due to the excessive amount of power that can be
generated in this test, only parts with an I
T(RMS)
rating
of 6 A or less should be tested on standard curve
tracer. If testing devices above 6 A, a Tektronix model
176 high-current module is required.
(2) A Kelvin test fixture is required for this test. If a
Kelvin fixture is not used, an error in measurement of
V
TM
will result due to voltage drop in the fixture. If a
Kelvin fixture is not available, Figure AN1006.3 shows
necessary information to wire a test fixture with
Kelvin connectors.
13. Set
Left-Right Terminal Jack Selector
to correspond with
the location of the test fixture.
14. Increase
Variable Collector Supply Voltage
until current
reaches rated I
T(peak)
, which is twice the I
T(RMS)
rating of the-
SCR under test.
Note: Model 370 current is limited to 10 A.
WARNING: Limit test time to 15 seconds maximum after the
Variable Collector Supply
has been set to I
T(peak)
, After the
Variable Collector Supply Voltage
has been set to I
T(peak)
, the
test time can automatically be shortened by changing
Step
Family
from repetitive to single by depressing the
Single
button.
To measure V
, follow along horizontal scale to the point where
the trace crosses the I
T(peak)
value. The distance from the left-
hand side of scale to the intersection point is the V
TM
value.
(Figure AN1006.7)
Figure AN1006.7
V
TM
= 1.15 V at I
T(peak)
= 12 A
Procedure 5: I
H
To measure the I
H
parameter:
1. Set
Polarity
to
(+)
.
2. Set
Power Dissipation
to
2.2 W
. (
2 W
on 370)
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 percent of the maxi-
mum 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
Offset
by depressing
0
(zero). (Press
Aid
and
Oppose
at
the same time on 370.)
9. Set
Step/Offset Amplitude
to twice the maximum I
GT
of the
device.
10. Set
Terminal Selector
to
Step Generator-Emitter Grounded.
11. Set
Step Family
by depressing
Single
.
12. Set
Left-Right Terminal Jack Selector
to correspond with
location of test fixture.
13. Increase
Variable Collector Supply Voltage
to maximum
position (
100
).
14. Set
Step Family
by depressing
Single.
(This could possibly
cause the dot on CRT to disappear, depending on the verti-
cal scale selected.)
15. Change
Terminal Selector
from
Step Generator-Emitter
Grounded
to
Open Base-Emitter Grounded
.
16. 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 AN1006.8)
Figure AN1006.8
I
H
= 1.2 mA
Procedure 6: I
GT
and V
GT
To measure the I
GT
and V
GT
parameter:
1. Set
Polarity
to (+).
2. Set
Number of Steps
to
1
.
3. Set
Offset
by depressing
Aid
.
4. Set
Offset Multiplier
to
0
(zero). (Press
Aid
and
Oppose
at
the 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)
500
mV
PER
V
E
R
T
DIV
PER
H
O
R
I
Z
DIV
PER
S
T
E
P
IPK
VTM
2
A
()k
DIV
9m
PER
DIV
100
mA
20
500
A
PER
V
E
R
T
DIV
PER
H
O
R
I
Z
DIV
PER
S
T
E
P
IH
()k
DIV
9m
PER
DIV
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| BCR3KM8 | TRIAC|400V V(DRM)|3A I(T)RMS|TO-220AB |
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