For sale bare boards for Delta Pulse/Sniffer XR-71

[keith777]

PS.........Kt please keep me updated as and when you can on how things are coming along.

[keith777]

Hi Kt

i don't mind waiting at all.
i would rather every thing on the board was good and correct. i am sure you to would rather it was all working as it sould do before it was sent out......

[kt315]

Keith you have to decide i send you the board with or TL081 either with soviet opamp, also one pot will be not same like others.
or you wait. better way that guys write - do not buy fake LF357 from chinese, rego on LF356 and to buy from third states.
maybe in round cases, metal glass.
i bought this just to look on condition, expensive https://www.ebay.com/itm/22271531337...=STRK:MEAFB:IT
you see - still less original chips and still more fakes. chinese know their deal!

[keith777]

thanks Kt for the update. i am looking forwords to seeing the video test.....
thoughs LF357 chips seem to be giving everyone who buys them a real headache. there has to be a reliable source of LF357 chips some were out there and at a reasonable price to.

[kt315]

thank you.

K777

maybe you remember my story above about a board that i got in repair. i removed some pots from it on your one and i saw same problem.
i found the cause. it was a pot 22k. i do not have pots of this type, all went out.
i bought pots on ebay but waiting time is month or more.

i did set lf357 i bought on ebay and noticed it is not so good, yes it is working but not it must be.
with tl081 i see better pic on o-scope.

later i will do video you could see the test.

[filos]

Accurate work, bravo kt315.

[qute1]

[Qiaozhi]

:большой палец: : ура:

Please read the forum rules -> Basic Rules of the Forums
and make your posts in English.

[filos]

:большой палец: : ура:

[keith777]

that is looking really great now Kt315
a Big huge mate.

i will PM you.......

[kt315]

at last stage K777. http://ipic.su/img/img7/fs/P1090351.1534195736.jpg
i checked test signals and must check with a coil.

[qute1]

Nice work an elegant solution.

[keith777]

looking really good and a tiedy job that is.......

[kt315]

[keith777]

.........