any info other than obvious website on XR 2206 circuit layout.

 

Google gave me :

http://www.vfx.hu/proj/fskmodem/fskmodem_eng.html
http://www.bugbrand.co.uk/pages/PDFs/XR2206VCO.PDF
http://www.solderingpoint.com/projects/xr2206/xr2206.php

Steve

 

Thanks. i heard you are a senior member how does one become

a senior member.

 

We become Senior Members by contributing to the forums.

The XR2206 is not a particularly easy IC to use, nor to obtain. If you have one, I suggest that you experiment with lots of cheap IC's first, so that your XR2206 will still be working when you'll be able to put it in a "good" circuit.

If you are not careful, you will very quickly destroy it.

 

Thanks. i heard you are a senior member how does one become

a senior member.

The designation of "senior member" is earned when the member submits their 100th post.

hgmjr

 

We become Senior Members by contributing to the forums.

The XR2206 is not a particularly easy IC to use, nor to obtain. If you have one, I suggest that you experiment with lots of cheap IC's first, so that your XR2206 will still be working when you'll be able to put it in a "good" circuit.

If you are not careful, you will very quickly destroy it.

thanks for the advice.

 

We become Senior Members by contributing to the forums.

The XR2206 is not a particularly easy IC to use, nor to obtain. If you have one, I suggest that you experiment with lots of cheap IC's first, so that your XR2206 will still be working when you'll be able to put it in a "good" circuit.

If you are not careful, you will very quickly destroy it.

.

XR 2206 is easily available ,advice on easy to use IC.

 

Why not start with 555/556 timers, and/or making a function generator out of several opamps? There are quite a few schematics around for such things.

Opamps and 555/556 timers are very cheap nowadays.

 

Why not start with 555/556 timers, and/or making a function generator out of several opamps? There are quite a few schematics around for such things.

Opamps and 555/556 timers are very cheap nowadays.

is 555/556 Op-amp similar to XR 2206.?

 

If you want to make a function generator try the 8038 chip.

 

is 8038 made by XR company.

 

Turns out the ICL8038 is no longer made either.
NTE864 is the same thing, but ridiculously expensive.

XR2206 IC's can still be purchased for under $4.
Here is one reputable supplier:
https://www.jameco.com/webapp/wcs/s...storeId=10001&catalogId=10001&productId=34972

Future Electronics also carries them:
http://www.futureelectronics.com/en...tion-generators/Pages/3238037-XR2206CP-F.aspx
If the above link doesn't work, go to their home page:
http://www.futureelectronics.com
and search for XR2206CP
I have never purchased anything from Future Electronics.

 

NTE864 is the same thing, but ridiculously expensive.

how expensive are we talking about?

budget for college is around $ 100 or so.

that is for IC parts only.

 

is 8038 made by XR company.

I believe the device was introduced by Intersil. EXAR had a similar part.

hgmjr

 

Check Mouser's price for the NTE864 (might be part number 538-nte864). I got a couple for $8.40 a year or so ago.

No - it's 526-NTE864, but the price is now $51 and change. Not worth it!

 

NTE864 is the same thing, but ridiculously expensive.

how expensive are we talking about?

Ridiculously expensive.

Buy two or three XR2206 ICs from Jameco or Future Electronics. That way you will have spares in case you burn one up.

If you buy an NTE864, you will pay about 15-20 times what the "real thing" will cost you.

NTE is a "vulture vendor"; when the end of a run of IC's is announced, they'll buy a number of them with their own "NTE numbers" printed on them.

Their cross-reference guide goes but one way; from other manufacturer's part numbers to their own.

You wind up paying anywhere from 5x to 25x the price what the original part cost. If it's a repair job, the inflated cost is passed on to the consumer.

 

Check Mouser's price for the NTE864 (might be part number 538-nte864). I got a couple for $8.40 a year or so ago.

No - it's 526-NTE864, but the price is now $51 and change. Not worth it!

$ 51 for a IC are you sure?

 

Yes. That is a real rip-off. I used to pay $4.80 for the ICL8038CCJD from Intersil.

 

Yes. That is a real rip-off. I used to pay $4.80 for the ICL8038CCJD from Intersil.

even $ 4.80 seems a little high, this must be a expensive

supplier.

 

It was a good deal. It's possible to use it as a VCO, and it has sine, square, and triangle wave outputs. You can't get $5.00 in parts to do all that.