Frequently Asked Questions

FAQ	FAQ ID
How do I install the 30-day evaluation of NI Signal Express Tektronix Edition Professional without a Serial Number? To install National Instruments Signal Express Tektronix Edition Professional software as a 30-day evaluation select the second radial button for 'Install NI SignalExpress Tektronix Edition Base - Serial number not required' (as shown below).	835696
How do I test a bipolar transistor for Collector Cutoff Current on my curve tracer? Collector Cutoff Current - ICEx or ICEvWhat It Is:Collector cutoff current is the IC that still flows when the specified VC and a specified reverse bias is applied. It is normally less than either ICEO or ICER (collector current with the base open...	835697
How do I test a bipolar transistor for Collector-Base Breakdown Voltage on my curve tracer? Collector-Base Breakdown Voltage - V(br)CBOWhat It Is:Collector-base breakdown voltage is the VCB at which a specified ICB flows, with the emitter terminal open. Since it's the reverse current across a junction, the ICB exhibits a knee shaped rise...	835698
How do I test a bipolar transistor for Collector-Emitter Breakdown Voltage on my curve tracer? Collector-Emitter Breakdown Voltage - V(br)CEO What It Is:Collector-emitter breakdown voltage is the VC at which a specified IC flows, with the base open. Since it's the reverse current across a junction, IC exhibits a knee shaped rise, increasing...	835699
How do I test a bipolar transistor for Collector-Emitter Saturation Voltage on my curve tracer? Collector-Emitter Saturation Voltage - VCE(sat)What It Is:Collector-emitter saturation voltage is the VC below which an increase in IB does not cause an increase in IC. The measurement is taken with specified values of IC and IB.On the curve tracer...	835700
How do I test a bipolar transistor for DC Forward Current Gain on my curve tracer? DC Forward Current Gain - DC Beta or hFEWhat It Is:DC forward current gain is the ratio of IC to IB under specified operating conditions. Because of variability with temperature, VC and IC values must be obtained at specific operating points....	835701
How do I test a bipolar transistor for Emitter-Base Breakdown Voltage on my curve tracer? Emitter-Base Breakdown Voltage - V(br)EBO What It Is:Emitter-base breakdown voltage is the VB at which a specified IB flows, with the collector open. Since it's the reverse current across a junction, IB exhibits a knee shaped rise, increasing...	835702
How do I test a bipolar transistor for Small Signal Current Gain on my curve tracer? Small SignalCurrent Gain - Small Signal Beta or hfeWhat It Is:Small signal current gain is the ratio of a change in IC to a change in IB, with the initial IC value specified.On the curve tracer, hfe is checked by measuring the difference in IC...	835703
How do I test a diode for Forward Voltage on my curve tracer? Forward Voltage - VFWhat It Is:Forward voltage is the anode voltage when the diode is conducting a specified forward current.On the curve tracer, the anode is driven by the Collector Supply.When testing VF on the 370(A), forward current is limited...	835704
How do I test a diode for Reverse Breakdown Voltage on my curve tracer? Reverse Breakdown Voltage - V(br)What It Is:Reverse breakdown voltage is the reverse anode voltage at which the diode conducts a specified amount of reverse current. Since it's the reverse current across a junction, IR exhibits a knee shaped rise,...	835705

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