Help needed getting an ESR meter...

[stj]

Re: Help needed getting an ESR meter...

most suppliers sell them, but not with prices that can compete with ebay.

[budm]

Re: Help needed getting an ESR meter...

https://www.badcaps.net/forum/showpo...1&postcount=14

See page 13 of the PDF on the rotary encoder.

[SteveNielsen]

Re: Help needed getting an ESR meter...

Oh! (light bulb flickers on above head) I know what one is now. They are on some a/v editing gear for scrolling fwd/rev for example but I never realized how they worked.

[awyatt2]

Re: Help needed getting an ESR meter...

I have the peak esr60 and 70. the 60 is the stby for the 70. never had either to lie in or out of circuit, maybe can happen but hasn't on any radio or tv I have used it on. I work on amateur radios as well and it just doesn't lie.

[Heihachi_73]

Re: Help needed getting an ESR meter...

I got my ESR70 from eBay for $130 (AUD, which would be a lot more now since the USD has since risen from its low point, and I'm sure Mr. Abbott helped make the AUD plunge all by himself), bought brand new from US seller despite the devices being made in the UK.

[stj]

Re: Help needed getting an ESR meter...

Nice.
I got this one a couple of days ago:
www.ebay.com/itm/251563800953
For me as an amateur and hobbyist it will do.
Seems to be working, i tested a couple of known good/bad caps and the results are ok. Even found some caps to be bad that i was not planning to replace
Is any calibration on this things needed?
How do you get this menu for special functions like frequency generator?
Nice job with the acrylic shield btw

so you have a T3 or T4.
found some stuff for that.

[csh]

Re: Help needed getting an ESR meter...

That's the one. No any markings or logo ond the PCB.
Found some links in this thread:
http://www.eevblog.com/forum/testgear/$20-lcr-esr-transistor-checker-project/

All models (link can be found in the forum above):
https://yadi.sk/d/yW8xa5NJgUo5z

Youtube:
https://www.youtube.com/watch?v=GfJizkJB21M

Unfortunately, have no time to fiddle with this tester
What interface is needed to upload firmware into this?

[stj]

Re: Help needed getting an ESR meter...

AVR programmer - preferably a chinese USBasp
http://www.ebay.co.uk/itm/261574745774


you will need to make a cable for the tester,
asp is 10pin, the tester is 6 and there is a second problem.
the T4 tester has the display right behind the pcb, so you need to lift the display a bit for safety before trying to solder to the board.

if it was me, i would get a right-angle 6pin connector or pinstrips, and cut them so they will be flush on the board, then lift the display and solder the pins.
then put the display back.

[Joe Black]

Re: Help needed getting an ESR meter...

Finally arrived
http://www.ebay.co.uk/itm/2015-newes...item27fb7e75f0

But I can't understand one part:
optional resistance and zero offset calibration of measuring equipment self-test capability of the port output (ATmega168 and ATmega328). Need a 100nF to 20uF capacitor connected to compensate the analog comparator between pins 1 and 3 of the offset voltage. This can reduce the measurement error 40uF above capacitor. With the same internal calibration capacitor voltage reference voltage is found to internal adjustment reference measurement ADC gain.

Help please

[csh]

Re: Help needed getting an ESR meter...

Looks interesting. Any pictures of the bottom side, what are those white plastic pins?

[stj]

Re: Help needed getting an ESR meter...

what are you refering to? the esr meter?
the display has plastic locating pins going through the board that are melted-flat on the underside.

[stj]

Re: Help needed getting an ESR meter...

Finally arrived
http://www.ebay.co.uk/itm/2015-newes...item27fb7e75f0

But I can't understand one part:
optional resistance and zero offset calibration of measuring equipment self-test capability of the port output (ATmega168 and ATmega328). Need a 100nF to 20uF capacitor connected to compensate the analog comparator between pins 1 and 3 of the offset voltage. This can reduce the measurement error 40uF above capacitor. With the same internal calibration capacitor voltage reference voltage is found to internal adjustment reference measurement ADC gain.

Help please

you can probably ignore that.
if you want to recalibrate it, link all 3 wires together and push the button.
it will tell you when to put the cap in and when to remove it.

[csh]

Re: Help needed getting an ESR meter...

what are you refering to? the esr meter?
the display has plastic locating pins going through the board that are melted-flat on the underside.

This marked in red rectangles on the attached pic.

[stj]

Re: Help needed getting an ESR meter...

pcb standoff's
either there is something on the other side, or they have been fitted to raise the components off the table.

btw, it looks like a flexable design - i bet a rotary encoder would be easy to fit.

[Joe Black]

Re: Help needed getting an ESR meter...

pcb standoff's
either there is something on the other side, or they have been fitted to raise the components off the table.

Exactly. Just plastic pins to raise PCB of the table.

btw, it looks like a flexable design - i bet a rotary encoder would be easy to fit.

I bet it would (for you, of course )

[stj]

Re: Help needed getting an ESR meter...

removing the button, 4 pins.
fitting the encoder, bending up one extra pin, cutting 2 tracks - maybe.
other than that - it fits directly onto the same footprint.

here's one.
http://www.eevblog.com/forum/testgear/$20-lcr-esr-transistor-checker-project/msg690137/?#msg690137

[goodpsusearch]

Re: Help needed getting an ESR meter...

Something went wrong.

I ordered this:

http://www.ebay.com/itm/181861030068

I've seen the following pic showing that the Test Clips are not included and was going to buy them separately...

https://www.badcaps.net/forum/attach...1&d=1446559550

I could get them from here for example:

http://www.ebay.com/itm/5-Pcs-5-Colo...item419a26c354

I got it yesterday. Turns out that the whole cable and the 3 pin plug were not included. I don't know how to search for it, is it proprietary plug?

Right now the only thing I could do is order the mini clips and then solder the cables direct on PCB.

If anyone knows where to buy it, please reply.

[SteveNielsen]

Re: Help needed getting an ESR meter...

The one I got is exactly the same but came with the connector and three leads but no clips. I got it here:
http://www.aliexpress.com/snapshot/6...69560471073177

I don't know what the exact spec is on the white connector but it looks like some I've seen for fans on video cards. The plug tends to work loose a little in handling but not a big deal.

[stj]

Re: Help needed getting an ESR meter...

T-happy probably made a mistake, i got one from them with the cable included in the packet.
contact them - they will probably send you the cable to keep good feedback.

[stj]

Re: Help needed getting an ESR meter...

cheaper clips - where i got mine
http://www.ebay.com/itm/371193424125