"Standard parts" for rf amps?
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"Standard parts" for rf amps?
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Henry Kiefer
Guest
Posted: Wed Dec 07, 2005 5:35 pm    Post subject: Re: "Standard parts" for rf amps? Reply with quote
Thanks Saandy! I knew CEL but forget them ;-)

Seems the NE85633 is really cheap and good performance. The package is
reasoable for hobbyists.
Do you already converted the parameters to spice and is it possible to
provide the file to me? Thank you!

Should be a good oscillator and all-purpose amp...


Sure, plain wire is better than the manufactured coils if possible to apply.

cu -
Henry


"Saandy , 4Z5KS" <hardware2@ift-int.com> schrieb im Newsbeitrag
news:1133948109.928371.287580@g43g2000cwa.googlegroups.com...
Quote:
The NE85633 bipolar transistor from California Eastern Laboratories
(CEL) ! very cheap quite stable and with a good noise figure. very well
documented by the manufacturer!
try to fish a development kit of SMD coils from Murata, sometimes they
give them away for free.
I personally prefer to go with air wound inductors, they're better and
quite small at these frequencies.
Saandy 4Z5KS


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Henry Kiefer
Guest
Posted: Thu Dec 08, 2005 1:20 am    Post subject: Re: "Standard parts" for rf amps? Reply with quote
Sorry. I found the needed file at CEL website by searching for part number.
- Henry


"Henry Kiefer" <otc_friend@gmx.net> schrieb im Newsbeitrag
news:43971923$0$9633$9b4e6d93@newsread2.arcor-online.net...
Quote:
Thanks Saandy! I knew CEL but forget them ;-)

Seems the NE85633 is really cheap and good performance. The package is
reasoable for hobbyists.
Do you already converted the parameters to spice and is it possible to
provide the file to me? Thank you!

Should be a good oscillator and all-purpose amp...


Sure, plain wire is better than the manufactured coils if possible to
apply.

cu -
Henry


"Saandy , 4Z5KS" <hardware2@ift-int.com> schrieb im Newsbeitrag
news:1133948109.928371.287580@g43g2000cwa.googlegroups.com...
The NE85633 bipolar transistor from California Eastern Laboratories
(CEL) ! very cheap quite stable and with a good noise figure. very well
documented by the manufacturer!
try to fish a development kit of SMD coils from Murata, sometimes they
give them away for free.
I personally prefer to go with air wound inductors, they're better and
quite small at these frequencies.
Saandy 4Z5KS


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Winfield Hill
Guest
Posted: Thu Dec 08, 2005 1:35 am    Post subject: Re: "Standard parts" for rf amps? Reply with quote
Henry Kiefer wrote...
Quote:

I can buy resistors and capacitors with 5%, sometimes with 1%.
If you build a RC oscillator with 1% component values, you get
an error typical 1,5%.

I have a nice line of 2% caps in stock, but where do you
get the elusive (affordable) 1% capacitors?


--
Thanks,
- Win

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Rich Grise
Guest
Posted: Thu Dec 08, 2005 7:51 am    Post subject: Re: "Standard parts" for rf amps? Reply with quote
On Wed, 07 Dec 2005 16:05:19 -0800, Winfield Hill wrote:

Quote:
Henry Kiefer wrote...

I can buy resistors and capacitors with 5%, sometimes with 1%. If you
build a RC oscillator with 1% component values, you get an error typical
1,5%.

I have a nice line of 2% caps in stock, but where do you get the elusive
(affordable) 1% capacitors?

You have undergrads select them. :-)

Cheers!
Rich
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Henry Kiefer
Guest
Posted: Thu Dec 08, 2005 5:35 pm    Post subject: Re: "Standard parts" for rf amps? Reply with quote
OR two capacitors in parallel. The support cap has a nominal value of 1/100
of the bigger cap. So you can tune the bigger.

- Henry


"Rich Grise" <richgrise@example.net> schrieb im Newsbeitrag
news:pan.2005.12.08.01.55.48.951945@example.net...
Quote:
On Wed, 07 Dec 2005 16:05:19 -0800, Winfield Hill wrote:

Henry Kiefer wrote...

I can buy resistors and capacitors with 5%, sometimes with 1%. If you
build a RC oscillator with 1% component values, you get an error
typical
1,5%.

I have a nice line of 2% caps in stock, but where do you get the
elusive
(affordable) 1% capacitors?

You have undergrads select them. :-)

Cheers!
Rich

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Henry Kiefer
Guest
Posted: Thu Dec 08, 2005 5:35 pm    Post subject: Re: "Standard parts" for rf amps? Reply with quote
For example http://www.wima.de/fkp2.htm
But I think there are other manufacturers too.

- Henry


"Winfield Hill" <Winfield_member@newsguy.com> schrieb im Newsbeitrag
news:dn7tbv01c7t@drn.newsguy.com...
Quote:
Henry Kiefer wrote...

I can buy resistors and capacitors with 5%, sometimes with 1%.
If you build a RC oscillator with 1% component values, you get
an error typical 1,5%.

I have a nice line of 2% caps in stock, but where do you
get the elusive (affordable) 1% capacitors?


--
Thanks,
- Win
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Hal Murray
Guest
Posted: Fri Dec 09, 2005 8:25 am    Post subject: Re: "Standard parts" for rf amps? Reply with quote
Quote:
I have a nice line of 2% caps in stock, but where do you
get the elusive (affordable) 1% capacitors?

Digikey stocks a handful of Panasonic ECQ-P(Z),
POLYPROPYLENE, Radial, 0.001 to 0.47 uF.

Not a great selection, but probably good enough for
many timing applications if you do the fine tuning with
the size of the R.

--
The suespammers.org mail server is located in California. So are all my
other mailboxes. Please do not send unsolicited bulk e-mail or unsolicited
commercial e-mail to my suespammers.org address or any of my other addresses.
These are my opinions, not necessarily my employer's. I hate spam.
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Winfield Hill
Guest
Posted: Fri Dec 09, 2005 9:12 am    Post subject: Re: "Standard parts" for rf amps? Reply with quote
Hal Murray wrote...
Quote:

I have a nice line of 2% caps in stock, but where do you
get the elusive (affordable) 1% capacitors?

Digikey stocks a handful of Panasonic ECQ-P(Z),
POLYPROPYLENE, Radial, 0.001 to 0.47 uF.

That's good to hear of, thanks! The 2% parts I have in stock
are the same series, but cheaper 2% parts. I didn't realize
DigiKey carried so many 1% film capacitor values in stock.


--
Thanks,
- Win
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Henry Kiefer
Guest
Posted: Fri Dec 09, 2005 9:35 am    Post subject: Re: "Standard parts" for rf amps? Reply with quote
For timing purposes I suggest using a ready-to-use clock generator in tiny
SOT-23 or alike. For example from www.linear.com and www.maxim-ic.com
They have a accuracy well in the 2% range and can be tuned with a little
resistor 1%. Maxim sells a 32768Hz variant - crystal controlled.
They're all digital ouput!

Building a 32KHz oscillator with a clock crystal and having sinus output is
really simple with CMOS buffers.
You can mix the signal with RF getting an IF somewhere. Look at the app note
at www.cypress.com how to build a time-code receiver using that concept -
just of the cystral and cypress mixed-signal controller.

- Henry


"Winfield Hill" <Winfield_member@newsguy.com> schrieb im Newsbeitrag
news:dnasnr0gms@drn.newsguy.com...
Quote:
Hal Murray wrote...

I have a nice line of 2% caps in stock, but where do you
get the elusive (affordable) 1% capacitors?

Digikey stocks a handful of Panasonic ECQ-P(Z),
POLYPROPYLENE, Radial, 0.001 to 0.47 uF.

That's good to hear of, thanks! The 2% parts I have in stock
are the same series, but cheaper 2% parts. I didn't realize
DigiKey carried so many 1% film capacitor values in stock.


--
Thanks,
- Win
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Henry Kiefer
Guest
Posted: Fri Dec 09, 2005 5:35 pm    Post subject: Re: "Standard parts" for rf amps? Reply with quote
Here it is Joel:
http://www.spectrum-benelux.com/docs/AppNote%20radioclock.pdf
(Seems that it is not on the cypress site)

If you realize something with the PSoC, then I would like to hear from you.

- Henry



"Joel Kolstad" <JKolstad71HatesSpam@yahoo.com> schrieb im Newsbeitrag
news:11pj2v9a93a7c70@corp.supernews.com...
Quote:
Henry,

"Henry Kiefer" <otc_friend@gmx.net> wrote in message
news:439943f3$0$27890$9b4e6d93@newsread4.arcor-online.net...
Building a 32KHz oscillator with a clock crystal and having sinus output
is
really simple with CMOS buffers.
You can mix the signal with RF getting an IF somewhere. Look at the app
note
at www.cypress.com how to build a time-code receiver using that
concept -
just of the cystral and cypress mixed-signal controller.

I don't suppose you have the name and/or number of that application note?
I
did a little searching without success to find it.

---Joel Kolstad

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Joel Kolstad
Guest
Posted: Fri Dec 09, 2005 5:35 pm    Post subject: Re: "Standard parts" for rf amps? Reply with quote
Henry,

"Henry Kiefer" <otc_friend@gmx.net> wrote in message
news:439943f3$0$27890$9b4e6d93@newsread4.arcor-online.net...
Quote:
Building a 32KHz oscillator with a clock crystal and having sinus output is
really simple with CMOS buffers.
You can mix the signal with RF getting an IF somewhere. Look at the app note
at www.cypress.com how to build a time-code receiver using that concept -
just of the cystral and cypress mixed-signal controller.

I don't suppose you have the name and/or number of that application note? I
did a little searching without success to find it.

---Joel Kolstad
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