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Transistor h fe varies fairly widely with Ic, so measurements with the service type tester give readings that can differ quite a bit from the h fe in the transistor's real life application. Hence these testers are useful, but can't be regarded as giving accurate real-life h fe values.
Download as PDF; Printable version ... network so the measurement circuits use the full precision of the A/D converter. ... for a proper transistor tester, ...
Name Purpose Cable locator Diagnoses a damage along a HV cable Contact resistance meter Measures the contact resistance of a power switching devices.
In addition to the transistor characteristic curves, the Type 575 is used to display dynamic characteristics of a wide range of semiconductor devices." (Tektronix, Catalog, 1967) A curve tracer is a specialised piece of electronic test equipment used to analyze the characteristics of discrete electronic components , such as diodes , transistors ...
On-state V CA drops to around 2 V, which is compatible with Transistor–transistor logic (TTL) and CMOS logic gates with 5 V power supply. [40] Low-voltage CMOS (e.g. 3.3 V or 1.8 V logic) requires level conversion with a resistive voltage divider , [ 40 ] or replacing the TL431 with a low-voltage alternative like the TLV431.
An LCR meter is a type of electronic test equipment used to measure the inductance (L), capacitance (C), and resistance (R) of an electronic component. [1] In the simpler versions of this instrument the impedance was measured internally and converted for display to the corresponding capacitance or inductance value. Readings should be reasonably ...
Instruments permanently mounted in a panel are used to monitor generators or other fixed apparatus. Portable instruments, usually equipped to also measure current and resistance in the form of a multimeter are standard test instruments used in electrical and electronics work. Any measurement that can be converted to a voltage can be displayed ...
In electronics, emitter-coupled logic (ECL) is a high-speed integrated circuit bipolar transistor logic family. ECL uses an overdriven bipolar junction transistor (BJT) differential amplifier with single-ended input and limited emitter current to avoid the saturated (fully on) region of operation and the resulting slow turn-off behavior. [ 2 ]