TGSL, equivalent IC's and N-Fet

[filip Cro]

Hi.
My friend and I think about making TGSL metal detector. We are from Croatia and we can't find some of the originals parts for project.

IC's
original: CD4024BE replacement: CD4024 ?
original: LM393AN replacement: LM393N ?

Transistors
For BC547 I can get A, B or C. Will one of them maybe work better then others?

I can't find J107 or BF247A. On Placment OC.pdf I see BF245C. So I guess that BF245C will also work.

What do you think about that?

[Carl-NC]

Yes, those should be fine. On the BC547, any general purpose NPN will work.

[Davor]

Bok ekipa!

Given a choice I'd go with BF245B. Suffixes at European FETs usually denote Ugso, and "B" is in a goldilocks zone.

You can also use any of the 74HC series, say 74HC4024, but not the 74HCT series.

As for BC series transistors I use BC327 and BC337 almost everywhere. Those can withstand a bit more abuse than other small plastic transistors, and they are better switchers. They are even superb for low noise. Given a chance, just buy a quantity of both.

[filip Cro]

Bok.

I look on page http://ad-electronic.hr/ and I was unable to find BF245B but I can get A or C
I will go to store soon and see if they have it. If not I hope that C will work.

I also find that LM308N is 76 HRK and I need 2. 152 HRK = ~ 30$
Too much for 2 chips. TL071ACP is in part list for EGLS and I think that I will use TL071CP.

For what dose stand suffix on IC's?

[Davor]

You should always seek at several places. Chipoteka is surprisingly often the cheapest, but they have some odd choice of components. Amazingly they have BF245B on stock, http://www.chipoteka.hr/pretraga/?keyword=bf245

Elmatis, http://elmatis.hr is a place to go for more exotic parts, and they are often the most expensive. A good balance is Kronos, http://www.kronos.hr, and maybe TVtron

Unfortunately, you'll never find everything you seek at single shop, so learn to pick your parts (not the private ones ) when they appear, or better yet learn to substitute, but you'll have to distinguish a probable critical feature you must obey, e.g. supply voltage.

Instead of LM308 you could try LF351, TL061, CA3130 and even NE5534 which works fine even in some silly situations. See this page for inspiration: http://www.talkingelectronics.com/Ch...OpAmpList.html

What schematic are you referring to?

Suffixes are manufacturer's choice, and you'll have to find out in datasheets - if it matters.

[Gwil]

Beware of this table of op amps; some of the descriptions don't line up correctly with the part numbers...

http://www.talkingelectronics.com/Ch...OpAmpList.html

For example TL074CN is a quad low noise device not a single high performance one.

[Davor]

Maybe your browser lines up the table wrong?
Table is fine here with me. But thanks for pointing out that the table might sort out wrong.

[Gwil]

It does seem to be an IE problem (or a problem in my computer). The table looks OK when viewed with Google Chrome. Haven't tried any other browsers.

[pigeon]

HI ALL

what's the equivalent for j107(2sj107)
and bf247.

please help me


thank you and best time

P.

[porkluvr]

You make a big mistake by assuming that J107 is "short" for 2SJ107.

[pigeon]

You make a big mistake by assuming that J107 is "short" for 2SJ107.

hi PORKLUVR

everyone makes mistakes


best time