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

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" schrieb im Newsbeitrag
...
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

Henry,

"Henry Kiefer" wrote in message
...
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

Here it is Joel:
http://www.spectrum-benelux.com/docs...radioclock.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" schrieb im Newsbeitrag
...
Henry,

"Henry Kiefer" wrote in message
...
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

Henry Kiefer wrote:
(Snippage)

Building a 32KHz oscillator with a clock crystal and having sinus output is
really simple with CMOS buffers.
Like snot???

(more snippage)
Sorry. I couldn't resist it.

Merry Christmas to all!!!

-Bob

hayseed wrote:
Henry Kiefer wrote:

(Snippage)


Building a 32KHz oscillator with a clock crystal and having sinus
output is
really simple with CMOS buffers.

Like snot???

(more snippage)
Sorry. I couldn't resist it.

Merry Christmas to all!!!

-Bob
Turns out that if you really want micropower sinewave oscillation at
32kHz, you are far better off using bipolar transistors than CMOS gates.



--
Many thanks,

Don Lancaster voice phone: (928)428-4073
Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
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