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7107/7106 types of dig meter ics are widely used.For these types,the capacitor responsible for integrating seems to be the culprit. digital meters are based on integrating type with counting for zeroing the values internally. But Wavetek may have different one . still the principle is same.
Hi i have a digital multimeter Agilent 34410A 6 1/2 Digit multimeter. I know its a particularly high accuracy multimeter, but i want to specify its accuracy in a test report. Usually DMM dc accuracy statement is like for eg: 5V Range,0.025%+2 (DC Specifications) But for this model it is stated like below (...)
As a first step, you want to find out the implemented type of interface. Digit display suggests a multiplex LCD interface which involves multilevel signals, no easily to tap with a microcontroller.
hello, I am looking for a cheap digital multimeter with RS 232 or USB interface.125895 be carreful with low cost RPC model !![
You zapped your multimeter with the very high voltage from your electric lighter. My expensive Fluke multimeter says on its cover: 1000V! Your electric lighter probably produced 10,000V or 20,000V.
Hi! I have a FLUKE 85 III True RMS multimeter. With the following DCV specification "Accuracy ... ? ( + ) For model 87 in the 4?-digit mode, multiply the number of least significant digits (counts) by 10." "Display: digital: 4000 counts updates 4/sec; (Model 87 also has 19,999 counts in 4?
Reference existing thread: hi I need kaise sk6111 circuit pic or schematic for repair this digital multitester - I need 1 pic from front and back of this multimeter
Hi. Guys I need a little help. I am supposed to work with the Tektronix DMM-912 TruRMS digital multimeter. The problem is that Tektronix has discontinued its line of these handheld multimeters. So I am only left with an option to look for an alternative. I have searched an really liked FLUKE. But this is way expensive. Kindly suggest me (...)
hi, Most AC meters are scaled in RMS, which is 0.707 * Vpeak. E
I didn't understand you question. If you are using capacitor with voltage exceeding it's max rated voltage--> capacitor will damage. Why you want to measure the resistance of capacitor...? did you mean ESR?
want to take the field digital inputs using opto-coupler 4n35 as i have show in the above schmatic. But such arrangement is not working with Atmega8 in the Real hardware. I don't know the reason...actually when i check with multimeter. when the led source is on the PIN5 reads 60mv and when the led so
You might consider auto-ranging, based on readings. Rather than switch duration. Also consider analog errors from stray magnetic current on high impedance of ADC loop and ensure smallest loop at 90 deg angle relative to current flow. Do you change CT and load ( burden R) and also change fixed shunt resistor too ? change scales? Just askin
Without doing any research, I am assuming that the Arduino is talking to Labview vis the USB port as a serial device? If that is the case you need to have a few layers of hardware and software to do this. 1.) Reading the current and voltage --You can read AC current with either a shunt resistor or a hall effect sensor. I am thinking the hall effe
usually there is a buzzer in there somewhere - maybe a faulty buzzer
Hello, I'm a new student to electronics and I have a question regarding supplying power to a breadboard with a wall adapter. I took an extra AC to DC wall adapter from an old Blackberry and cut the USB end off of it so I could use the wires. I know the smooth/round wire is the hot wire and the ribbed wire is the neutral wire (output is 5V an
Make sure all the configuration resistors are mounted and that their value is correct.
Hi, I'm looking for a Service Manual / Schematics for FETVOM HC-5050DB. User Manual also of interest! (HUNG CHANG, VOLTCRAFT or CONRAD make..) Any suggestions? - Please let me know! :smile: Regards // wyatt
hello, SIM900 is a GSM/GPRS module. it is small with about 5cm/5cm dimensions and it has about 60 pins. i'm wondering if it is possible to test it in a breadboard before making a PCB ? thank you
Sir, I have used the Pseudomorphic HEMT(PHEMT) AVAGO TECHNOLOGIS ATF54143 transistor to my work. I want to conform the working of ATF54143 PHEMT transistor. Using the digital multimeter , how to check whether working or not the ATF54143 PHEMT transistor. It has four terminals one gate and drain, two sources. For forward bias which term
Hi my multimeter has a voltage and a mA/A plug. I am trying to find out how much instantaneous current can a homemade battery supply. How can i measure this with the digital multimeter? What procedure?
My multimeter, DT830B digital multimeter, is giving a negative average of -3 volts by default that means that even without connecting the leads it reads a negative number. The only part of the multimeter that dosen't appear to have the bias is the ohms reading ... When I connect it to a 9 volts battery, it reads 6 volts (...)
I have RTD,THERMOCOUPLE and THERMISTOR. I want to identify this three only using digital multimeter.. how can i do this???
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
Hi , I have got few digital pot ICs MAX5161 Ics for controlling the current to the dc load . (I have attached my ckt) . Resistance across the H and L increases when I operate with INC and up/down pins when I measured using multimeter , but if I connect my load no current will flow to the load .. Pls help me to find out where I have gone wro
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 ? V(AB1)= V(R6)+V(R8)+V(R9) What voltage drop would I expect when I connect a digital multimeter between C & D ? V(CD1)= (...)
Hello, 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
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 (...)
hello friends. i want to design digital multimeter using 8051. pls help me for doing this project, i need a schematic and program. thanks in advance. :)
HELLO ! Can you help me finding ASUS M51T motherboard schematic. thank you !
hello friends, Can anyone suggest me required tools for electronics engg and how can we find the off campus detail ?
Hello sir I ve a digital multemer on which a measuring option with a sign of sqaure wave is given , what it measures actually & where the terminal is to apply when the knob is det to that option ? please explain about it
Hello sir 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
I am from Bangladesh and will go to Malaysia next month. I want to buy Oscilloscope, digital multimeter and some microcontroller there in Kualalampur but don't know where is the parts market situated. :( Please help me by giving address to the parts market where I will be able to buy Oscilloscope, multimeter, Pickit , microcontroller (...)
hello,i am trying to measure a square wave(pwm) with amplitude 3V, so when i try to measure it with a multimeter across my motor,should i watch the next: Vmultimeter=3*sqrt(duty cyle) is it correct? because sometimes i am watching more than 3V on my multimeter across the motor about 3.7V but i think that it shouldn´t be higher than 3V. (...)
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
have used a development board to create a small circuit containing a 12V supply plugged into an analogue development board which contains a 100mA fuse. After this i have attached an oscilloscope across the two inputs to complete the circuit and this created a sine wave image on the scope. When looking at the wave it has a peak voltage of 20V when
I want to know the formula used to calculate the Inrush Current of HID Electronic Ballast. We can measure the inrush current by using Clamp-On meter, digital multimeter and with Power Analyzers, but I want to know the formula used for the measurement of inrush current especially for HID Electronic Ballast.
Please help me with this, this is my first engineering project....
Hi all, can any body help me how to write a digital multimeter functioning code for PIC16F788 which can able to measure and show both positive and negetive values as fractionals like 5.02v or -3.13v.
referred on the title,please save me on this basic theory~XD:grin:
The 12 V power supply such as Laptop charger or adapter shows around 17.5V in my 2 multimeter(Analog + digital) as well as in our lab oscilloscope where rated 12V. Now i want to connect it with a 12V geared motor. Is any problem to connect it across these adapter.I also tried it using another 12V normal dc motor for 5 problem yet. C
i use pic 16f877a pleas post digilog jr the details
The current that goes into any device comes out too unless you have a current leak of some kind. It is like any voltage source , for example with a battery the current that goes to a device through the plus pole returns to the source from the minus is the same, what goes through the phase returns through the neutral. You have to clamp one
pls help to make the multimeter for my project:sad:
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.
Hi.. friends.. I want to measure Voltage, Current and Frequency in 10w, 110V, 700kHz power line..? I need to measure this power line from 50Hz to 700khz frequency variation..
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
Generally the frequency reading of standard digital multimeters is low. Better is to use a frequency counter.
Hallo Zeller, to the output of them pls :-)... K.