TheBackShed.com

Forum Index : Electronics : LCR and multi tester query

Author

Message

Ralph2k6

Senior Member

Joined: 24/09/2017
Location: Australia
Posts: 129

Posted: 08:10pm 07 Oct 2017

Copy link to clipboard

Print this post

Just a question for the knowledgeable people here. I am wanting to build some projects but i have not got all the right tools. I'm wondering if anyone has any experience with the following;

lcr/capacitor etc tester

This appears to be an OK product, there are numerous duplicates, even on good ol aliexpress. I mainly want it for the LCR feature, and its much much cheaper than brand name units.

Thanks in advance.

Ralph

joebog1
Senior Member

Joined: 07/11/2015
Location: Australia
Posts: 114

Posted: 10:24pm 07 Oct 2017

Copy link to clipboard

Print this post

Doesnt say ANYTHING about L, or inductance.
Doesnt mention frequency of tests, even for capacitors.
Specs as shown are :

Resistance measurement: Max. 50MΩ
Resistance resolution: 0.01Ω
Capacitance measurement: 25pF~100mF
Capacitance resolution: 1pF
DC voltage measurement: Up to 50V

It does NOT do Inductance, so for me its expensive, NOT as described, and I suggest its a cheap meter with LCD ( Liquid Crystal Display ) NOT an LCR or
L = Inductance
C= Capacitance
R=Resistance

meter.
There are hundreds available for 1/4 that money with free freight, that DO do as described.

best wishes

Joe

Ralph2k6

Senior Member

Joined: 24/09/2017
Location: Australia
Posts: 129

Posted: 12:05am 08 Oct 2017

Copy link to clipboard

Print this post

Thanks Joe, I'll have another look. Maybe I posted the wrong link. There are ones that look like the above that run on an arduino mega 328 that support an impressive range of testing options to that sort of price. Will post up later perhaps a proper example, my bad.

Ralph

Alastair
Senior Member

Joined: 03/04/2017
Location: Australia
Posts: 161

Posted: 10:57am 08 Oct 2017

Copy link to clipboard

Print this post

I bought one of these some time ago and have been quite happy with it. many other options but this is convenient and was quite cheap.

I rarely need to measure a passive component accurately, i find my biggest use is matching resistors and capacitors when I need pairs and verifying semiconductors when the markings are hard to read. If you have special precision needs then you need to step up to a name brand device, otherwise just go with one of the ones from a major source which has sold the same one for quite a while.

Cheers, Alastair

joebog1
Senior Member

Joined: 07/11/2015
Location: Australia
Posts: 114

Posted: 03:10pm 08 Oct 2017

Copy link to clipboard

Print this post

http://www.ebay.com/itm/LCR-T4-ESR-Meter-Transistor-Tester-Diode-Triode-Capacitance-SCR-Inductance-M328-/112117081748?ha sh=item1a1ab2e694:g:pd0AAOSwOdpXx~z0

Try that one

Joe

Ralph2k6

Senior Member

Joined: 24/09/2017
Location: Australia
Posts: 129

Posted: 10:19pm 08 Oct 2017

Copy link to clipboard

Print this post

Thanks for the help fellas.

I've decided to go with the following. Not as cheap as your suggestion Joe, but its supposed to also have a frequency generator (you tube videos seem to confirm this).
Which could be handy all in one package, and its a decent size screen for component images to be displayed too.

M328 LCD 12864 Multi type tester

There are so very many kinds that are very similar or identical but different sellers, etc.
Edited by Ralph2k6 2017-10-10

Ralph

Ralph2k6

Senior Member

Joined: 24/09/2017
Location: Australia
Posts: 129

Posted: 10:27pm 27 Oct 2017

Copy link to clipboard

Print this post

Just an update, I got the unit linked above. Have used the seller before, quick to arrive considering China delivery.
I known there are cheaper ones, and thought I was getting the colour screen.. Anyway at least I have one now, and the arduino chip can be swapped out for other firmwares too.
Came in handy already building the 'downwind' LM723 power Supply circuit. Found my 2n2955 were fine but display reminded me they are PNP. Whoops! Still getting used to part numbering, explains why my power supply was not working!!
And now time to buy some high power npn's maybe tip35's.

Ralph

Print this page

To reply to this topic, you need to log in.