Transitor/ESR tester dead

[SteveNielsen]

Re: Transitor/ESR tester dead

That's much coolness. I won't get mine for 15 days at least. All those I saw shopping online couldn't deliver any sooner though and the shipping was free, they all ship from China anyhow so what's the diff? Maybe I'll get another cute little Chinese trinket!

[stj]

Re: Transitor/ESR tester dead

some pics with my acrylic shield.

i made an error in taping the battery down,
i'm going to get one of these for it.
http://www.rapidonline.com/Electrica...-Leads-18-0163

[stj]

Re: Transitor/ESR tester dead

the leads are included, just not the clips on the end.
because mine is here!!!!
and i made some nice protection for it from a fucked lcd panel & some threaded spacers - pictures later!

btw, the firmware has the extra stuff compiled in it, if you hold the button down you get a menu.
then you can activate the frequency generator or pwm generator!

i tested the frequency generator with my multimeter that goes upto 10Mhz and the output was accurate

[vinceroger69]

Re: Transitor/ESR tester dead

this one does but extra £4.00 you can probably buy the leads/clips cheaper
http://www.ebay.co.uk/itm/Latest-128...item3f4ca3d739

[SteveNielsen]

Re: Transitor/ESR tester dead

btw, i just ordered this model.
i chose it because it has a 3pin connector and flyleads.
http://www.ebay.co.uk/itm/181861030068

I just ordered one too.

BTW the leads aren't included.

[stj]

Re: Transitor/ESR tester dead

usb was for this:
http://www.ebay.co.uk/itm/400935450937

[vinceroger69]

Re: Transitor/ESR tester dead

cool ive just found this thread a very long read but does cover these testers too and has the same info you have just posted i wondered what the usb solder tracks was for thanks for the clarification

http://www.eevblog.com/forum/testgear/$20-lcr-esr-transistor-checker-project/255/
page 11 shows the socket you have mention fitted

[stj]

Re: Transitor/ESR tester dead

used in conjunction wih this:
http://www.fischl.de/usbasp/

supplied dirt cheap and improved by our friends.
http://www.ebay.co.uk/itm/261574745774

i actually built one on stripboard before i noticed them on ebay, it cost me about 5 times the price to build!

here is the schem of the superior chinese one!

[stj]

Re: Transitor/ESR tester dead

the usb socket is nothing to do with it - that's just for charging a lithium battery - you see this model on ebay.

programming is done through a 6 or 10 pin header.

[vinceroger69]

Re: Transitor/ESR tester dead

How easy is it going to be to fit a usb socket and any missing parts to the tester? i havnt found any information about doing this?

[stj]

Re: Transitor/ESR tester dead

http://www.atmel.com/tools/atmelavrt...orwindows.aspx
or
http://www.atmel.com/tools/ATMELAVRT...NFORLINUX.aspx

for building the software.

[keeney123]

Re: Transitor/ESR tester dead

Without the chip there is 1053 ohms from Gnd to Out pads where IC2 reg was, so the 2 ohm short is in the chip.

Al foil in 4 layers for a heat shield worked perfectly. The chip came off sliding sideways a bit so I cleaned up the solder pads for it with wick and iron and no solder bridges or damaged pads. This is a first for me; the first smd microchip of this type I have ever tried to remove! Yay!

All right victory!

[stj]

Re: Transitor/ESR tester dead

oh yes - cutting edge version!

[vinceroger69]

Re: Transitor/ESR tester dead

interesting - gonna take a while to look through that.

just added another link ive found not sure if its for these testers though

[stj]

Re: Transitor/ESR tester dead

interesting - gonna take a while to look through that.

[vinceroger69]

Re: Transitor/ESR tester dead

no mine dosnt either ive just found this though
http://www.mikrocontroller.net/svnbr...ster/Software/
http://www.mikrocontroller.net/topic/248078

[stj]

Re: Transitor/ESR tester dead

the programming header can be fitted - it's the 2x5 set of holes.

software is easy, you download the source,
set the options for the type of display etc,
then make the hex with winAVR compiler.

[SteveNielsen]

Re: Transitor/ESR tester dead

My tester doesn't have the USB port and circuitry.

[vinceroger69]

Re: Transitor/ESR tester dead

is the software easy to get? if you go for the ebay chip/programmer.

[SteveNielsen]

Re: Transitor/ESR tester dead

Ok, w/o display regulator has 4.96v on Out. 9.06v on In.