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Q: Which ammeter DMM or VOM has the higher loading effect Why?
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Can you test connectivity of circuit using DMM?

Yes. There is a sign of Speaker/sound on a side DMM. Move the knob of DMM on that symbol. Now connect one prob of the DMM on one circuit element & one under that(If you are designing the circuit on PCB or plain board). If a sound come out of that then it means that your circuit element & the portion below that are properly connected.


What is typically the lowest impedance found between the probe sockets of a DMM?

1 ohm


When testing a shortened diode with a DMM and the positive lead is connected to the anode what should the reading be?

Assuming the DMM is rated to test diodes (not all are), meaning that it presents more than forward drop voltage to the diode, a shorted diode will test nearly zero ohms, usually in both directions.


What value of voltage measure by DMM Vrms or Dc voltage?

Many can measure both - Vrms (AC) or DC voltage.


What human need can be addressed with a vacuum tube voltmeter?

A vacuum tube voltmeter (VTVM) is just the "old school" version of the newer (cheaper, more accurate and easier to use) digital multimeter (DMM). It is used to measure voltage (AC and DC), resistance, and (usually) current flow. It may have some other functions. For the most part, these meters (the VTVMs) used an electromechanical meter movement (expensive, shock sensitive, sometimes hard t read/interpret) in place of the display of the DMM. And they have some disadvantages over the DMM, as mentioned here and there. (There are a couple of things the old VTVM will do that the DMM has difficulty doing, but the modern DMM is a better meter for almost any application.) The need to make measurements, and, hence, the need for the meter is to support understanding and assessment of electrical "stuff" that needs to be looked at, usually to see why it isn't working properly. The meters are used by builders of electronic and electrical devices, and by the curious who wish to investigate the physics of basic electronics and electricity.

Related questions

Voltmeter DMM or VOM has the higher loading effect?

The VOM has the higher loading effect, because it has a lower impedance. It is typical for a VOM to have an impedance of 20K ohms per volt while the DMM has a fixed impedance of 10M ohms or 20M ohms.


What games have DMM?

PSP games do not have the power for DMM PSP games do not have the power for DMM


What is the input resistance of an ideal current-measuring DMM?

First of all, DMM stands for Digital Multimeter. The -multi implies the meter measures several different parameters, usually voltage, current, resistance, and sometimes other things such as frequency. The input characteristics of a DMM will be very different depending on the parameter selected. For current, the ideal meter would have zero input resistance. Since the ammeter is inserted in series with the circuit under test, any resistance will alter the measured current, introducing error in the measurement.


Can a DMM be used as a simple coax tester?

You can use the DMM to test continuity in the cable.


Can you test connectivity of circuit using DMM?

Yes. There is a sign of Speaker/sound on a side DMM. Move the knob of DMM on that symbol. Now connect one prob of the DMM on one circuit element & one under that(If you are designing the circuit on PCB or plain board). If a sound come out of that then it means that your circuit element & the portion below that are properly connected.


Who backed suported the tyrants?

the Athens and the Spartans dmm


How do you test a resistorcapacitordiodes?

With a DMM (Digital Multi Meter)


Which electrical voltage value does a dmm output when in diode test mode?

When testing a diode with dmm in diode test mode 0.6v is delivered through the device to indicate continuity


What is the abbreviation used for Dubai and Dammam?

DUBAI --------- DXB Dammam ------ DMM


What is the current rating on the fuse in the HP 34401A DMM?

3 A max...


What type of accessory device can be used to measure AC with a VOM without opening the circuit?

Electricians use a clamp or clamp-on ammeter to measure current. The handles are squeezed together and the "jaws" open up. The clamp is then slipped over the conductor and the handles are released. The "jaws" close around the conductor and the meter is then in a position to measure current in that conductor. When current flows in a conductor, the current generates a magnetic field around the conductor. And the clamp-on ammeter can "feel" the current and measure it, thus permitting an investigator to know how much current is flowing in that conductor. The clamp-on ammeter is a stand-alone meter, but can sometimes be the kind that is plugged into a digital multimeter (DMM). A link to the Wikipedia article on the clamp ammeter is provided.


What is typically the lowest impedance found between the probe sockets of a DMM?

1 ohm