Tektronix CURVE-TRACER 576 Instruction Manual page 50

Operating Instructions-Type 576
IF and VF
2-32
SIGNAL DIODES AND RECTIFYING DIODES
Required Type 576 Control Settings
Control
Required Setting
HORIZONTAL COLLECTOR
PEAK POWER WATTS
Less than maximum power rating of device
POLARITY
Terminal Selector
HORIZONTAL
+(NPN)
EMITTER GROUNDED
·-
.
.
. .
t
·--r-~-+~~+-~-+--r-~~-4
'
r-;--+~~+-~-+--r-;--r-4--~
'
~--r-4--+~~+-~-+--r-4-~-4--·
:--r-~-+~~+-~-+--r-;--r-4--~
'
r-~-+~~+-~-+--r-~~~--·
'
If vs. Vf
Some Common Measurements
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To measure forward current and voltage, put the cathode of the diode in the emitter
terminal of the test socket and the anode of the diode in the collector terminal. Apply
voltage to the device with the VARIABLE COLLECTOR SUPPLY control.
Current and voltage in the reverse direction are measured in the same manner as in the
forward direction except that the POLARITY switch is set to -(PNP). For measurements
of small amounts of reverse current, set the MODE switch to LEAKAGE (EMITTER
CURRENT).
ZENER DIODES
Required Type 576 Control Settings
Control Required Setting
COLLECTOR
PEAK POWER WATTS Less than maximum power rating of device
POLARITY -(PNP)
Terminal Selector EMITTER GROUNDED
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