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What if a semiconductor diode is being tested using a digital multimeter and the resistance of the diode is 10 ohms in both forward and reverse-biased conditions is the diode shorted or opened?
Freddieg
The diode is neither shorted nor open. It is a zener diode and it is conducting in both directions. If it were truly shorted, it would read closer to zero ohms in both directions.
Wiki User
∙ 14y ago
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What is the name of the device that measures resistance?
Most multimeter are able to measure resistance.
Why can a semiconductor measure temperature?
Semiconductor resistance depends on temperature. So, you can use a shunt resistor to measure semiconductor voltage with a given current and, then, obtain temperature.
When measuring resistance with a Digital multimeter what does the flashing display indicate?
contact was made.
Will the resistance increase when the temperature increases in a semiconductor?
NO. In a semiconductor the resistance decreases with increase of temperature. It is their natural behavior unlike conductors and insulators. If we decrease the temperature their resistance increases. At 0 degree kelvin all semiconductors will act like perfect insulators.
What will be the resistance of a 10kohm resistor when measured using the multimeter with the terminals reversed?
Approximately 10,000 ohms.
What is bulk resistivity?
Bulk resistance is the ohmic resistance of the semiconductor material. The natural resistance of a "P" type or "N" type semiconductor material.
What is the name of the device that measures resistance?
Most multimeter are able to measure resistance.
If a multimeter reads zero on the ohm scale is this high or low resistance?
zero is low resistance
Besides voltage and resistance what else can your multimeter measure?
current
Principle of multimeter?
Based on the principle of the D'Arsonval galvanometer, the main function of a multimeter is measuring a circuit's voltage, current, and resistance.
What is the difference of volmeter and multimeter?
A volt meter can only measure voltage. A multimeter can measure other items such as resistance and continuity.
What is difference between semiconductor and superconductor?
A semiconductor only allows some electrons to flow across its junction. It has some resistance, in fact more resistance than a conductor but less than an insulator. A superconductor has no resistance.
How do you measure a thyristor?
Many users of thyristors and diodes lack the proper equipment to make measurements of semiconductor parameters. The readily available battery operated multimeter is often used to try to determine the difference between acceptable and non-acceptable devices using a resistance reading. A reading of this type can lead to incorrect conclusions. MULTIMETER MEASUREMENTS The multimeter is generally used to measure the DC resistance between anode and cathode of thyristors and diodes and also the gate to cathode on thyristors. These measurements are of the "off state" or blocking voltage of the device. The only valid readings are "open circuit" and "short circuit". The anode to cathode or gate to cathode measurement must register a short circuit in both directions ( forward and reverse polarity) for the device to be declared short and infinite resistance for an open circuit. The measurement of resistance with a multimeter is an inappropriate measurement technique for separating good devices from bad. When a resistance measurement is taken with an multimeter, the internal battery voltage is typically in the range 1.5V to 15V and the leakage current of the device at this voltage will determine the measured resistance. A semiconductor has a non-linear blocking voltage/leakage current characteristic and hence a non-linear resistance curve. The blocking voltage of a thyristor is defined as the voltage at which it reaches a specified leakage current at the defined temperature. Therefore devices can have a variety of leakage current characteristics and still be within specification. PRECAUTIONS 1. Ensure that the resistance reading is only being taken across the device and not across something in parallel with it. 2. If a capsule type device is being measured, make sure that it is under sufficient load to ensure that the internal components are pressed together and high resistance readings are avoided. SUMMARY A multimeter resistance measurement is not recommended for determining acceptable semiconductor devices. As a quick check for devices in a circuit, a multimeter will allow you to determine if a device has failed catastrophically. The device with the lowest leakage current at 3V is not necessarily the one with the lowest leakage current a high voltage
Why can a semiconductor measure temperature?
Semiconductor resistance depends on temperature. So, you can use a shunt resistor to measure semiconductor voltage with a given current and, then, obtain temperature.
What tool can be used to test voltage resistance and amperage in a circuit?
A multimeter.
What is the resistance scale on an analog multimeter often termed?
Resistance is measured in ohms, so some refer to the resistance scale as the ohms scale.
What are the advantages of multimeter over other instruments?
A multimeter is far better for measuring electrical charges, resistance, etc then say a slide rule
