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Digital Ammeter Not Working


FAQ Search Memberlist Usergroups Profile Log in to check your private messages Log in How To Register Posting Photographs Privacy Policy facebook.com/oldclassiccar How Can I the bad thing about trouble shooting a Multi-meter is you need a multi-meter to check a faulty multi-meter. One question in the picture labeled "Volt ammeter with external power supply" is the meter connected to both the external power supply as well as the main batter? In my situation the power supply and the load to be read are one and the same, ie the 2 rails of the track. have a peek here

How much energy is released when 50.0 g of water cools from 85.0°C to 35.0°C? Hall effect is really the way to do for non-contact metering, and there are measures that can be taken to minimize both electronic drift and clamp integrity errors. Is it blown? #6 Like Reply Nov 22, 2007 #7 beenthere Retired Moderator Apr 20, 2004 15,815 282 Wrapping the fuse in aluminum foil can be useful for a function Reply With Quote 12-03-15,21:32 #10 ianj99 View Profile View Forum Posts Private Message Registered User Join Date Nov 2009 Location UK Posts 1,964 Originally Posted by pvb So, in your suggested http://forum.allaboutcircuits.com/threads/no-current-through-ammeter-in-simple-battery-circuit.8023/

Ammeter Vs Voltmeter

on 2015-05-04 Reply By Aggelos Hi Janar, My ammetr/voltmeter arrived and yesterday I wired it according to your directions. I skipped that bit as Mello did say he had a multimeter and would likely need it to monitor the voltage as he made the calculations. Thanks in advance.

It is designed so that the shunt should go in the negative return wiring with the common wire at the battery side of the shunt so most negative of the the If the shunt has more hair on its chest than your mains fuse then it may live too, but YCMV. (your calibration may vary) subsequently. Search or use up and down arrow keys to select an item. Ammeter Connection Posted by eyik66 in forum: The Projects Forum Replies: 25 Views: 605 In circuit battery charging with constant current Posted by Frakk in forum: General Electronics Chat Replies: 10 Views: 2,471

SAMKIT Shah · 7 years ago 0 Thumbs up 3 Thumbs down Comment Add a comment Submit · just now Report Abuse Amp meters need to be connected within the positive How To Use Ammeter Isn't it called ampermeter? –sharptooth Jun 20 '12 at 6:00 @sharptooth - You missed the last e in ampere (ampere not amper) –PetPaulsen Jun 20 '12 at 6:07 3 And on a different note, welcome to the field! Actually it's not rocket science, but I had waited it for 2-3 weeks and didn't want to blow it at first try.

Stating meter brand and model will probably allow us to provide some model specific advice. How To Connect Ammeter And Voltmeter In A Circuit I attempted to test for a parasitic drain on my car battery by disconnecting the negative/ground post and putting the multimeter (in ammeter mode) in series with the circuit while the No, create an account now. If it only rises when the lights are off, then there are problems with the charging system.

How To Use Ammeter

Home › Advanced Solar Electric Technical Forum Trouble wiring digital ammeter KC-watts Posts: 37Solar Expert ✭ April 2014 in Advanced Solar Electric Technical Forum #1 For those of us with small http://www.oldclassiccar.co.uk/forum/phpbb/phpBB2/viewtopic.php?t=7899&sid=3abd02e7f8d03f0b5e8a495c182644bb The meter is not wired in to the circuit correctly 3. Ammeter Vs Voltmeter I bought to of this meters and none are working, I made the connections like your pics . Ammeter Circuit Diagram On a meter where the same test lead jacks are used for both resistance and current measurement, simply leave the test lead plugs where they are and touch the two probes

I have a 6v +ve earth '56 Ford Pop, with an ammeter that reads that it is discharging at around -9 amps with the ignition off. http://sevevb.com/how-to/digital-meat-thermometer-not-working.html My understanding of multimeters (which I gained partially from this site) told me that each separate setting connects the leads to a different subcircuit (simplistically, a different resistor). It's like the ground (black wire) goes "through" ammeter and + is connected directly. Forum Index -> Electrical Restoration Author Message MelloJoined: 24 Aug 2009Posts: 34Location: Lower Normandy, France Posted: Wed Oct 28, 2009 12:45 am Post subject: How Can I Test My Ammeter? How Does An Ammeter Work

Be aware that the apparent resolution and repeatability of most meters is substantially higher than the accuracy. Going under the assumption that the ammeter part of my DMM is bad, I've put another multimeter on my Christmas list (the Mastech DT9205 seems good; it also does capacitance and on 2016-10-13 Reply By Janar Is it the same kind of meter as shown in my photo? Check This Out The time now is 10:12.

Of course, at no current flow, the needle should read zero. Ammeter Uses It appears you have fat black to the neg pole and both red wires to pos. But to provide an electronic readout you can use a strain gauge to measure the force on a stationary wire or coil instead of measuring the position it moves to against

Last edited by ianj99; 12-03-15 at 14:59.

Skinny red and black can be powered via external power supply ( this voltammeter has operating voltage DC 4.5 ~ 30V ). Even the wire cross section looks too small for that, let alone the miniature connector the wires connected to. Now, a decently bright red LED should be drawing less than about 20 mA of current, which is consistent with the voltage drop I measured across the resistor too. Ammeter Working Principle Some don't.

This is entirely unacceptable and the "designer" of the meter needs a severe talking to (before or after tar & feathering as desired). You will need to power the module from an isolated dc-dc converter such as http://uk.farnell.com/multicomp/mca1...o-p/dp/2079676 The two sensing wires are then connected to the shunt in the positive lead. traces coming fromm the selector switch, It's got to be one of the listed. http://sevevb.com/how-to/digital-thermostat-not-working-furnace.html track coming from the switch ,or the pads or P.C.

Watch QueueQueueWatch QueueQueue Remove allDisconnect Loading... They requires 12v-ish power to run the meter/display itself. on 2015-05-29 Reply By James Schaffner Great tutorial. Worst case, and, thankfully, rare, is that people also die when the meter does.

Sign in Share More Report Need to report the video? Loading... Maybe you can give us the product link or your order number. Low current range (500 mA and less) will usually be fused and share a common fuse.

Thus, if I've verified that the leads are good, it seemed implausible that all of the current settings, and only the current settings, would be bad. asked 4 years ago viewed 27379 times active 4 months ago Get the weekly newsletter! I have a similar one that reads only voltage and it doesn't need any supply except for the measured input, so this was a bit odd. This also allows the shunt to read at any Voltage (i.e. 12, 24, 36, 48 Volt system) without needed complex regulation to power the meter. 0 jcheil Posts: 719Solar Expert ✭✭

If you can, we sincerely hope that could you please send us a picture to let us check what is the problem detail? Home solar components are mostly 6x9 boxes and dangling large gauge wires, where did you find a safe place for PCB mount DC/DC converter. I was using RED with RED and BLACK to Black with the BLUE serving the load as negative. Likewise, if it doesn't rise at all, then there is no charging going on.

Will add some other material in future. The type I have do not use the battery negative as a reference. Page 1 of 2 12 Last Jump to page: Results 1 to 10 of 13 Thread: Ammeter shunt - positive or negative side of load?