146 Threads found on edaboard.com: S Digital Multimeter
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EDA Jobs :: 29.02.2004 05:06 :: mixos :: Replies: 0 :: Views: 1123
Hi everybody, can anybody tell me where to find information on the internal working of a digital multimeter, its constructive aspects and general instrumentation concerning its use?
Analog Circuit Design :: 05.04.2005 19:18 :: Daigoro :: Replies: 2 :: Views: 1413
Need a service manual/schematic for this old KONTRON digital multimeter DMM3003
Anyone can help?
Service Manuals, Requests, Repair Tips :: 08.05.2005 15:48 :: baza :: Replies: 2 :: Views: 1844
How does a digital multimeter calculate Voltage , Current , Resistance. Can someone suggest a good reference.
ASIC Design Methodologies and Tools (Digital) :: 01.03.2006 13:04 :: positive_edge :: Replies: 3 :: Views: 1354
please help me i want to know that
how can we check earth and nutral with digital multimeter .
please tell me where i can find a tutorial full of pictures if posiible which can tell about using digital mutimeter
thanks a lot ..............:D
Service Manuals, Requests, Repair Tips :: 12.11.2007 03:11 :: arpitt :: Replies: 0 :: Views: 2416
Anyone got Fluke 8012A digital multimeter manual? I am trying to figure out why there a nicd battery inside and when I remove it the multimeter works fine. Is it ok not to connect the battery?
Thank you so muuch
Service Manuals, Requests, Repair Tips :: 07.10.2008 02:16 :: hust :: Replies: 3 :: Views: 4333
Resistors R30 and R31 on pcb 4233-1288d-b are burnt beyond recognition and need to be replaced. They conect directly to the voltage and resistance measurement terminal on my wavetek multimeter. I have searched everywhere for a wavetek dm27xt digital multimeter schematic in order to find out their sizes and types.
Anyone who can help?
Service Manuals, Requests, Repair Tips :: 13.02.2009 12:17 :: owenshaba :: Replies: 2 :: Views: 2852
the current measurement is done in serial
so the ideal impedance is 0ohm so logically you are shorting it
connect one terminal to transformer and other to some circuit
so you can measure the current consumption of that circuit
EDA Jobs :: 29.05.2009 00:47 :: sau_sol :: Replies: 4 :: Views: 2099
I am going to build a digital multimeter with AVR ATmeg32 and it has to be also capable of reading AC voltages to 220 V and AC currents to 1 A. I have the software and hardware needed for the normal digital multimeter, but I dont know what should I do to make it capale of those voltages and currents. I mean is (...)
Embedded Systems and Real-Time OS :: 16.07.2009 15:41 :: shirani mehr :: Replies: 3 :: Views: 1400
how to improve stability in 4 1/2 digital multimeter.
If the design and components are of low or sub standared ones,(As found in chineese makes) nothing is possible to increase stability. Cheers
Analog Circuit Design :: 20.11.2009 10:31 :: pranam77 :: Replies: 1 :: Views: 736
I have a ESCORT99 digital multimeter, but manufacturer company acquiring other electronic company. Therefore, by connecting to a computer required to run the software is not available anywhere.
Software Links :: 02.12.2009 07:30 :: junkiejournal :: Replies: 0 :: Views: 547
i use pic 16f877a pleas post digilog jr the details
Analog IC Design and Layout :: 23.04.2011 03:01 :: thannara123 :: Replies: 4 :: Views: 1661
I'm searching the schematics of this digital multimeter.
Service Manuals, Requests, Repair Tips :: 07.03.2010 08:10 :: alpibucky :: Replies: 0 :: Views: 1318
I want to build multimeter which can measure V,I,R,C etc.I hope to use PIC,ADC...But i have nt clear idea about how Current is measured ,how maintain autoranges..please give me some ideas,directions to do this project.
Microcontrollers :: 25.01.2011 12:43 :: nicko-391 :: Replies: 7 :: Views: 2757
Please help me with this, this is my first engineering project....
Hobby Circuits and Small Projects Problems :: 14.10.2011 10:01 :: MitParmar :: Replies: 3 :: Views: 1563
Normally the voltage output is less than 0.6 V DC. This facilates in-cicuit resistance measurements because BJT and diodes a (silicon) are not switched on
Electronic Elementary Questions :: 08.03.2012 05:38 :: klystron :: Replies: 2 :: Views: 643
Standard 8051 dont have ADC, you should use ADC IC with 8051 uC or you can use newer generation of 8051 with builtin ADC.
What you want to measure, you say just multimeter. This can be anything, from amperage, voltage, resistance, power, isolation breakdown, diode, ....
Microcontrollers :: 18.11.2012 00:23 :: tpetar :: Replies: 4 :: Views: 614
Hi everyone, there is a project I am doing and it requires encorporating a module of digital multimeter to measure and display electrical quantities at some points. Normally the digital multimeter has been provided with a battery head so that it can be powered by a battery, but I want to remove the battery head and power the (...)
Electronic Elementary Questions :: 14.12.2012 16:01 :: Ogu Reginald :: Replies: 4 :: Views: 398
Consider the below circuit with 28V supply and electronic load set at 5A Constant Current mode.
What voltage drop would I expect when I connect a digital multimeter between A & B ?
What voltage drop would I expect when I connect a digital multimeter between C & D ?
Electronic Elementary Questions :: 04.03.2013 19:58 :: vinodquilon :: Replies: 0 :: Views: 192
I imagine it could quite useful and fun, build your own DMM..
ASIC Design Methodologies and Tools (Digital) :: 13.05.2002 23:56 :: shemo :: Replies: 4 :: Views: 3265
I am designing a digital multimeter with a MAX134.
My problem is that I don't want to use any mechanical switch or relay when changing the measuring function from voltage to current.
thanks in advance
Added after 7 minutes:
SORRY.. I made a mistake writing the questi
Professional Hardware and Electronics Design :: 05.05.2005 06:05 :: alba800 :: Replies: 0 :: Views: 1353
So: connect the meter negative to the MOSFET's source. This is arrowed in the drawing above which shows the most popular TO220 MOSFETs.
Hold the MOSFET by the case or the tab if you wish, it doesn't matter if you touch
Electronic Elementary Questions :: 28.11.2005 23:52 :: IanP :: Replies: 6 :: Views: 19471
Hi , Everybody
i want to design multimeter Ac & Dc
colud any one help me in this design
now i have dc design but i need circuit design for ac
if you attach a circuit it will be better
Analog Circuit Design :: 27.12.2005 13:46 :: alzhrani :: Replies: 4 :: Views: 5189
GAO HOS220C Handheld digital Oscilloscope
Supported by stable testing equipments, which are convenient and easy to read during the complicated on-site system, is a visible necessity for all engineers. GAO HOS220C Handheld digital Oscilloscope is designed to match this kind of needs. This handheld oscilloscope has a sampling rate at 100 MS
EDA Jobs :: 28.12.2007 03:07 :: gaotek_bj :: Replies: 0 :: Views: 712
more explainations here :
Electronic Elementary Questions :: 21.10.2008 06:55 :: Kripton2035 :: Replies: 8 :: Views: 1904
hi friends I want to make this soldering ıron but I don't how to adjust it.language of document about this iron is in Hungary unfortunately I don't know Hungary:D. can anybody help
Hobby Circuits and Small Projects Problems :: 19.01.2009 18:22 :: generator***** :: Replies: 5 :: Views: 3788
1.i have measure ac input voltage is 250 volt ac
2.i have measure ac out put voltage is 11.7 volt (by digital multimeter 9205M)
3.when we connect only a single diod to one terminal of ac out put 11.5 volt without using capacitor 1000uf 16v .DMM giving 3. somthing dc volt
Added after 1 minutes:
EDA Jobs :: 21.05.2009 03:00 :: shahidsiddiq8 :: Replies: 1 :: Views: 726
I would like to know if checking a digital transistor is in the same way as a bipolar transistor since the digital one has one resistor in the base an another one in the base-emitter.
Electronic Elementary Questions :: 29.06.2010 00:17 :: marco antonio :: Replies: 2 :: Views: 2066
I'm measuring the voltage result of my assignment. But , i found a problem, no matter where I connect, my DMM only will appear mV result. Initially I tought that was my circuit mistake, but when i straight connect the DMM with the 12v power supply, my DMM still showed mV results with weird reading !!!
How would it be like that ??? Is that mean th
Analog Circuit Design :: 02.10.2010 06:43 :: No22Ben :: Replies: 3 :: Views: 689
better go for micro controller design, old multi-meters used 7106 but now all are using multimeter and the parts count and the input switches can be reduce, 7106 is good for 3.5digit volt meter but for multimeter you have to add more circuits to it,
Embedded Systems and Real-Time OS :: 09.02.2011 20:05 :: rajudp :: Replies: 14 :: Views: 4002
Meter check of a transistor : BIPOLAR JUNCTION TRANSISTORS
How to Test a Transistor |
Go through this link... hope it will hwlp to you..
Electronic Elementary Questions :: 12.07.2011 04:24 :: Senthilkumar_rjpm :: Replies: 7 :: Views: 11314
Data Precision Manuals from Tucker Electronics
Data Precision 245 Op-Service Manual - FREE SHIPPING!: For Sale: LV12227439
Service Manuals, Requests, Repair Tips :: 14.12.2011 11:18 :: yura717 :: Replies: 1 :: Views: 854
i want to know that if i have a capacitor from an old radio or any where & its in working condition but lost the value labelled on that due to atmosphere & i ve a simple digital multimeter in which i dont have option to measure capacitance directly then how could i do so ? just to find capacitance value only here . please te
Analog Circuit Design :: 24.06.2012 09:13 :: rajaram04 :: Replies: 1 :: Views: 395
Is the inut "LO" terminal of the Keithley 2000 digital meter connected to earth certainly seems to have the earth ground symbol drawn near it.
......the user manual and datasheet dont say.........
Keithley 2000 digital meter datasheet:
Keithley 2000 digital met
Electronic Elementary Questions :: 19.01.2013 09:37 :: treez :: Replies: 6 :: Views: 517
The 17B isn't true RMS. It measures the average AC voltage then assumes it was really a sine wave and corrects the answer. That's fine if the signal was a sine wave (it usually is, otherwise you would be using an oscilloscope). If the original signal was a square wave then the value measured will be incorrect.
Electronic Elementary Questions :: 20.06.2013 09:33 :: keith1200rs :: Replies: 2 :: Views: 211
where are you?
I suspect the more global brands might be more expensive then you like at this stage
a digital meter is more 'accurate' but an analog can be more useful if the voltage/current is changing
Electronic Elementary Questions :: 30.07.2013 00:15 :: kam1787 :: Replies: 7 :: Views: 332
I've got the operating and service manual for the "HP1742A Oscilloscope" (including Option 001, 090, 101, 102, 580, 900, 901, 902 and 906) and the operating and service manual for the "1700 Series Option 034 digital multimeter" that can be installed on top of the scope.
Unfortunately I only have it on paper. What can we do about that because I c
Professional Hardware and Electronics Design :: 18.07.2001 01:36 :: Hollaender :: Replies: 5 :: Views: 5415
I would build a diode frequency doubler with two diodes + trifilar transformer wound on a small ferrit bead/ or toroidal core, see Fig 2 of the article at (* => t). No need for tuning, it is wideband and you can use 1N4148 or similar high-speed switching diodes (or Scho
Professional Hardware and Electronics Design :: 11.03.2002 11:03 :: unkarc :: Replies: 18 :: Views: 2779
Have someone ever designed the DMM with the max134.I am now designing a DMM with the max134,now I want to control the max134 with the avr uprocessor,Can someone providing the information,I am anxiety for it!
Professional Hardware and Electronics Design :: 24.07.2003 21:03 :: wanneng :: Replies: 0 :: Views: 1136
You can test the IGBT by multimeter at the Diode test position.
Emetor Collektor must be open circuit at the two direction (If you see reverse diod this is not problem).
Gate Emetor must be open circuit.
If you see any short circuit at the any two pin IGBT is mort.
But this is not good test...
Hobby Circuits and Small Projects Problems :: 28.01.2004 06:23 :: bunalmis :: Replies: 2 :: Views: 5464
How to identify the terminals of a BJT or FET transistor without a datasheet. Is using a voltmeter or oscilloscope possible
Electronic Elementary Questions :: 13.08.2004 03:19 :: vsethia :: Replies: 5 :: Views: 9821
It is allways best to use zener diodes to prevent spikes on input to io board
Hobby Circuits and Small Projects Problems :: 16.09.2004 04:37 :: barrybear :: Replies: 4 :: Views: 3264
A thermocouple consists of two dissimilar metals, joined together at one end, and produce a small unique voltage at a given temperature. This voltage is measured and interpreted by a thermocouple thermometer.
The thermoelectric voltage resulting from the temperature difference from one end of the wire to the other is actually the sum of all the vo
Hobby Circuits and Small Projects Problems :: 04.10.2004 18:54 :: vfone :: Replies: 5 :: Views: 1140
I found this two devices, i.e. BCR5PM (TRIAC) & SM8JZ47 (Triode Thyristor), on a washing machine controller board. Is it possible to 'diagnose/troubleshoot' these devices by using only digital multimeter? If it's not possible, pls advise how to determine those devices are still in GOOD CONDITION?
Do you think TRIAC = Triode Thyristor?
Robotics and Automatics Forum :: 23.10.2004 01:15 :: nicleo :: Replies: 0 :: Views: 1099
The problem is that SMPS draw non-sinusoidal current from the mains unless it has PFC (Power factor Correction). Trying to make measurements without true RMS type meter will give wrong readings
Analog Circuit Design :: 26.11.2004 03:00 :: E-design :: Replies: 5 :: Views: 2138
If your meter has hfe measuring function (most digital ones do, some analog ones do too) then you could just try every possible pin combination (BJT's only of course) until you get a reasonable hfe reading (~100 typically).
Analog Circuit Design :: 04.08.2005 13:00 :: arebee :: Replies: 8 :: Views: 5450
Best method is Transistor tester.
You can get Beta, Vbe, Iss and so on
Analog Circuit Design :: 19.09.2005 22:53 :: sunking :: Replies: 3 :: Views: 1031
A silicon diode, when it is forward biased there is a drop of .7v. but when we use multimeter to measure this drop across diode, it gives zero reading show a short ckt. why?:?:
Electronic Elementary Questions :: 09.12.2005 07:50 :: misha82 :: Replies: 9 :: Views: 954
How to check a Capasitor either it is working or fail using digital multimeter?
Electronic Elementary Questions :: 12.12.2005 07:35 :: kengloong :: Replies: 4 :: Views: 8652
sorry for this silly question .but i can't find the answer anywhere..
Electronic Elementary Questions :: 16.12.2005 04:27 :: ysenthilece :: Replies: 23 :: Views: 20470