Is this a good DMM for $70 ??? - diyAudio
Go Back   Home > Forums > General Interest > Everything Else

Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 20th September 2002, 11:24 PM   #1
diyAudio Member
 
Join Date: May 2002
Location: Los Gatos, CA
Default Is this a good DMM for $70 ???

What do you think about this one for $70 ?
Mind you I'm just a speaker builder or Tube Kit builder/hobbyist.

Kaito Electronics DMM

Click the image to open in full size.
__________________
-Brad-
  Reply With Quote
Old 21st September 2002, 05:16 AM   #2
diyAudio Member
 
Peter Daniel's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Send a message via AIM to Peter Daniel
Looks like it has everything you might need, including inductance, which is not very popular with universal meters. If you could get 4 digit meter at that price it would be even better, but if not, that one would do.

Maybe you can find more info here: Necessary equipment/tools for building
__________________
www.audiosector.com
“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC
  Reply With Quote
Old 23rd September 2002, 01:02 AM   #3
diyAudio Member
 
mrfeedback's Avatar
 
Join Date: Feb 2002
Location: Perth, Australia.
An autoranging meter like a Fluke makes a much better meter IME.
Also some cheaper meters do not have the display stability of a Fluke.

Eric.
  Reply With Quote
Old 23rd September 2002, 01:05 AM   #4
diyAudio Member
 
Peter Daniel's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Send a message via AIM to Peter Daniel
But can they be obtained for $70?
__________________
www.audiosector.com
“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC
  Reply With Quote
Old 23rd September 2002, 02:03 AM   #5
diyAudio Member
 
mrfeedback's Avatar
 
Join Date: Feb 2002
Location: Perth, Australia.
Default Value.

"But can they be obtained for $70? "

Probably not, but you get what you pay for.
I've been using Flukes for 20 years, and other (lesser) meters are just not the same.
I have a similar meter to the one above, and I use it only for capacitance test, the Fluke for all else.

Eric.
  Reply With Quote
Old 23rd September 2002, 08:45 AM   #6
Electrons are yellow and more is better!
diyAudio Member
 
peranders's Avatar
 
Join Date: Apr 2002
Location: Göteborg, Sweden
Blog Entries: 4
If accurancy is no big deal I would say that don't buy an unneccessary expensive DMM.

I would say that a 30 USD can be perfect for you unless you want high mechanical qaulity.

I have used Fluke 77 for years, a true work horse with fast auto ranging and very little power consumption (one battery every 12-18 months).

Rescently I bought a maximized APPA 305 but this thing eats batteries! Also slow autoranging! But I had chosen Fluke the price would have been x1.5- x3! APPA 305 costs here in Sweden 280 USD and Fluke costs 400+ USD.
__________________
/Per-Anders (my first name) or P-A as my friends call me
Tube Buffered Gainclone in work |Thread || Diamond buffer |Thread for the group buy | Wiki
  Reply With Quote
Old 23rd September 2002, 07:04 PM   #7
diyAudio Member
 
MRehorst's Avatar
 
Join Date: May 2002
Here are some things to consider about DMMs...
1) Digits- 3 is somewhat limited- 4 is OK, 5 is great, 6 is overkill for most applications.
2) Features- inductance is almost useless for audio work. Capacitance can be useful if you have a bunch of unmarked parts, otherwise it is not all that useful. It isn't usually very accurate unless you have a fixture and proper cable to connect to the meter.
3) Battery life- this can be a big deal, but the catalogs don't tell you what the life is (because it will vary depending on how you use the meter) so you just have to ask around a lot.
4) Settling time - some meters seem to take forever to give you a stable value, others are quick. Unfortunately, this varies from model to model, even in the same manufacturer's line.
5) an "analog" or bar-graph type display is useful for making adjustments (but an analog VTVM or similar device is even better).
6) Other goodies- like communitions to a PC and data logging- can be useful for moniotring long term changes in temperatures, bias levels, etc. I understand Radio Shack has a couple meters out with this sort of capability, as does Fluke.

I say spend the extra dough and get a Fluke. These days most models have a lifetime warranty (which is one of the things that pushes up the price a bit). The first time you have to replace a meter because repair cost is about the same as purchasing a new one (and it usually is) you'll kick yourself for not getting the one with lifetime warranty up front.

In my many years of doing electronics I have learned two things:
1) Never buy cheap tools. They will break your heart every time.
2) Never buy components at retail unless you have an immediate need for them. Like computer software, the prices always drop over time, and better ones are coming out all the time.

MR
  Reply With Quote
Old 23rd September 2002, 10:09 PM   #8
diyAudio Member
 
Peter Daniel's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Send a message via AIM to Peter Daniel
I got Fluke 97, got Fluke 87, but mostly find myself using cheap Wavetek DM15XL. For my needs I don't see much difference between all those meters. Actually, I don't like to use Fluke 97, because it's too big and too complicated (I used it only as a scope). I recommend to buy a cheap meter and try it out, if it's not up to your needs, buy second one, more ealaborate. Whenever I test my new amp for a first time I always need 2 meters so it won't be a lost or wrong decision on your side.

And inductance mesurement capability is very important for speaker building.
__________________
www.audiosector.com
“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC
  Reply With Quote
Old 23rd September 2002, 10:22 PM   #9
Banned
 
Join Date: Apr 2002
Default Capacitance can be useful if you have a bunch of unmarked parts, otherwise it is not

Or want to match caps for filters, crossovers, RIAA, cable capacitance, ect. I have two capacitor meters and use them alot. I like an inductance meter for measuring transformers windings also. you can make a test jig with banana plugs and alligator clips with very low stray parasitic capacitance and inductance. More than adequate for audio frequency parts.

Ren
  Reply With Quote
Old 23rd September 2002, 11:53 PM   #10
dice45 is offline dice45  Germany
diyAudio Member
 
Join Date: Jan 2002
Location: Munich, Bavaria
bbaker,
agree with the others, this instrument should do fine. But maybe you are better on on with a 4 digit meter not having capacitance and inductance.

I owned an Escort digital LCR meter costing about US$260. It showed capacity quite reliably, it sported weird behaviour concerning the measured Q or damping value, worse, measurements of the identical cap showed different Q values depending on the manually selected range. Measured inductivities were nothing but rough guesses. Its main vitrtue was measuring electrolytics quite accurately and reproducably.
I lost trust in the instrument and sold it. Today i do not trust cheap handheld devices including my Fluke 123 as far as capacity and inductivity is concerned.

Maybe your meter should have less fancies and do those fancies fine. For instance. Our local surplus shop sells a combined analog and digital meter; it has a 4 digit readout and a real analogue voice coil meter. You have the DVM for exact reaqdout and the needle for observing continuous parameter changes like rsing currents where the slow digital thing drives you nuts and tells you lies.

For L and C nothing i can afford beats the ESI 250D impedance bridge i got on ebay for $100. If i would be you, i would buy a decent combined instrument like described above and a cheap impedance bridge which should have a Q/damping compensation with readout. How high the Q or how low the damping is tells you directly how good the component, choke or cap, is for audio. My best caps like MKV show almost zero damping.

All,
i love my Fluke 123, just not for measuring Cs. Okok, i am happy it has it if i am anywhere and i have the Fluke only. It is an industrial scope meter, in fact a small oscilloscope. It is myy most used instrument, it is soooo convenient. But my old trusty analog Metrawatt Unigor i use almost as much.
The Fluke 80 series are good and reliable, but they waste battery like hell.
If i had to buy a DVM today, i would stick to the fluke 70 series. Maybe not a bad idea to buy a Fluke 77 used instead of buying some crap new.
__________________
Greets,
Bernhard
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
What makes the good guitar pickup sound so good? darkfenriz Instruments and Amps 15 1st March 2009 11:46 PM
Good switch for Stepped attentuater, Good cheap RCA jacks pjpoes Parts 20 10th March 2005 08:47 PM
Pioneer TS-W304C- anyone have good design for it? and is it good for home sub? XteveX Multi-Way 7 28th April 2004 04:05 AM


New To Site? Need Help?

All times are GMT. The time now is 03:33 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2