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audio recording on IC -help wanted

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Guest

Wed Jun 01, 2016 11:54 pm   



On Sunday, October 31, 1999 at 7:00:00 AM UTC, neil wrote:
Quote:
Anybody recommend a VCO IC that will tune 5-35MHz. Square wave output is
OK.

--
Neil
http://www.aade.com
mailto:neil_at_aade.com
Almost All Digital Electronics
1412 Elm St. SE
Auburn, WA 98092
253-351-9316


Just idea to get people thinking. 74 f Series would be better, more hz error the lower the output freq. also square waves best for saturating switching mixers and no chance of hysterisis.
i didnt notice the date of post comes close to top of search list though.
Roger

legg
Guest

Thu Jun 02, 2016 7:30 am   



On Wed, 1 Jun 2016 14:54:55 -0700 (PDT), rgo.else_at_gmail.com wrote:

Quote:
On Sunday, October 31, 1999 at 7:00:00 AM UTC, neil wrote:
Anybody recommend a VCO IC that will tune 5-35MHz. Square wave output is
OK.

--
Neil
http://www.aade.com
mailto:neil_at_aade.com
Almost All Digital Electronics
1412 Elm St. SE
Auburn, WA 98092
253-351-9316

Just idea to get people thinking. 74 f Series would be better, more hz error the lower the output freq. also square waves best for saturating switching mixers and no chance of hysterisis.
i didnt notice the date of post comes close to top of search list though.
Roger


Note the original poster.

Worth it just for the memories.

RL

Brian Gregory
Guest

Fri Jun 03, 2016 7:30 am   



On 27/05/2016 04:00, Jon Elson wrote:
Quote:
rgo.else_at_gmail.com wrote:

On Sunday, October 31, 1999 at 7:00:00 AM UTC, neil wrote:
Anybody recommend a VCO IC that will tune 5-35MHz. Square wave output is
OK.

--
Neil
http://www.aade.com
mailto:neil_at_aade.com
Almost All Digital Electronics
1412 Elm St. SE
Auburn, WA 98092
253-351-9316

Hi if u want 0 to 32mhz in 1 hz steps

clock 24bit counter at 64mhz feed into 24bit comparater use the 64mhz
clock (modules avaliable). For bit 1 use the clock directly.This forms
count to x. then feed output into bi-stable this halfs frequecy to 32mhz
and gives u 50:50 duty cycle. 3x 74ac521 8 bit comparators could be used
not a=b outs fed into a 74ac10 3 input nand this would generate MR for 2 x
74hc4040 by philips which are garanteed to 79mhz clk. with the 3 x 8bit
latchs for the count to x value should fit on a 100 by 100 pcb which u can
get 5off made out in china for 10usd.
Yes, a DDS is the way to go, as long as a little phase noise is acceptable.
But, you won't be able to build this with 74ACxx parts, no way they will
clock at 64 MHz. I don't know where you found this 79 MHz spec, I see 24
MHz, but note that the 4040 is not a synchronous counter, it is a ripple-
carry chain, so the total delay through the string of FFs is 30 ns PER
STAGE, so 360 ns! So, there is no way to decode this as a count, as it will
have a time skew of about one clock time every time one of the FFs toggles.

Jon


He said VCO - Voltage Controlled Oscillator.
And he said it over 16 years ago.

--

Brian Gregory (in the UK).
To email me please remove all the letter vee from my email address.

sms
Guest

Tue Jul 12, 2016 11:09 pm   



On 7/11/2016 7:13 PM, Reinhardt Behm wrote:
Quote:
Ralph Mowery wrote:

In article <0001HW.1D33507700174B6A10BAE03CF_at_news.eternal-
september.org>, not_at_home.cow says...

On 10 Jul 2016, John Larkin writ:

I always pull a few extra of the smaller surface-mount parts. It's
dependable that I'll lose a few before I get them soldered down.

Required SMD tool: vacuum cleaner (hoover to you Empire boys) with empty
bag.

I am glad the resistors and capacitors are only a few cents. If I need
only one or several, I always get atleast 10 of them. Don't usually
loose any if I do. If I don't or the part is several dollars or more
and I get just the required ammount I usually drop one and spend lots of
time looking for it.

We call that here the "umbrella effect". If you have an umbrella with you it
does not rain.


Plus most distributors won't sell you less than 10 at a time.


Guest

Thu Jul 14, 2016 2:05 pm   



On Wednesday, September 29, 2010 at 11:05:37 AM UTC-7, maya wrote:
Quote:
See Hot Sexy Star *Karishma Kapoor Sex Videos At

http://nandanavanam.co.cc

Due to high sex content, i have hidden the videos in an image.
in that website on Right side below search box click on image

and
watch videos in all angles.



Guest

Thu Jul 14, 2016 2:12 pm   



On Wednesday, September 29, 2010 at 11:05:37 AM UTC-7, maya wrote:
Quote:
See Hot Sexy Star *Karishma Kapoor Sex Videos At

http://nandanavanam.co.cc

Due to high sex content, i have hidden the videos in an image.
in that website on Right side below search box click on image

and
watch videos in all angles.



Guest

Fri Apr 07, 2017 4:54 am   



Is 2SD1555 can be use to replace from D5703?

John Robertson
Guest

Fri Apr 07, 2017 7:30 am   



On 2017/04/06 7:54 PM, kimr17712_at_gmail.com wrote:
Quote:
Is 2SD1555 can be use to replace from D5703?


Can't answer about cross-reference, however MCM had the 2SD5703 in stock
a few years ago, and may still.
1-800-551-1522
http://www.mcmelectronics.com/content/en-US/help/pricing

John :-#)#

--
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
(604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."

Benderthe.evilrobot
Guest

Sat Apr 08, 2017 12:42 am   



<kimr17712_at_gmail.com> wrote in message
news:67c78c43-939a-4afb-925f-63b399e68267_at_googlegroups.com...
> Is 2SD1555 can be use to replace from D5703?

Asian transistors invariably leave out the "2S" from the part number printed
on the device.

There are plenty of sites that have data sheet archives.


---
This email has been checked for viruses by AVG.
http://www.avg.com


Guest

Sun Apr 30, 2017 8:20 pm   



On Sunday, 24 April 2016 20:37:12 UTC+1, barbie...@gmail.com wrote:
Quote:
Op dinsdag 3 september 1996 09:00:00 UTC+2 schreef E Pekka A Saari:
I'm trying to repair Panasonic NV-G40 VCR Power Supply
(VEP01338A / VEK3702 / VGH1476-1). So far I have found
three blown components:

D17: diode SV0381,
QR1: transistor? A143TA
D12: zenerdiode with just color code: red and black

Any ideas where to find specs for these?

It would also be usefull to have a pinout for a hybrid
regulator STK5340. It has eight pins and number one is ground.
In the SMPS-hybrid-FAQ -file the closest is STK5333.

I will appreciate any help.

T: Pekka
--
Pekka Saari E-mail Pekka.Saari_at_Helsinki.FI
Gresantie 9 A, Kauniainen, Finland Tel +358-0-5055 812

Reading it now 4-2016 psu does nothing, looks like it is in primairy part...



Guest

Wed Sep 13, 2017 7:10 pm   



On Tuesday, February 10, 1998 at 2:00:00 AM UTC-6, Ronald Brent Clements wrote:
Quote:
Does anyone out there have information on the stall torque (holding torque?)
and max/min slew rate of the Tandon KPM4-001 Stepper. I have scavanged one
of these as a test for a controller I am developing at school, and for my
report I require this information. I have found the connector configuration
on a web page.

Brent "NARF" Clements


Looking for the same information. Also, what was the web page you found with the connector information?


Guest

Sat Jan 06, 2018 1:28 pm   



On Wednesday, June 19, 2002 at 5:58:57 AM UTC+8, Paul Taylor wrote:
Quote:
Hello. Anyone got a .pdf datasheet for the Sharp LM64C35P LCD display?

All I managed to find after an hour of searching is its connector
pinout.

I'd like to know how it's interface works for a start :-)

TIA

Paul Taylor


check datasheet here
https://www.facebook.com/LM64C35P/

John Robertson
Guest

Sat Jan 06, 2018 7:56 pm   



On 2018/01/06 3:28 AM, mico_at_shunlongwei.com wrote:
Quote:
On Wednesday, June 19, 2002 at 5:58:57 AM UTC+8, Paul Taylor wrote:
Hello. Anyone got a .pdf datasheet for the Sharp LM64C35P LCD display?

All I managed to find after an hour of searching is its connector
pinout.

I'd like to know how it's interface works for a start :-)

TIA

Paul Taylor

check datasheet here
https://www.facebook.com/LM64C35P/


I doubt that the OP (Paul Taylor) is still looking - 16 years after
posting...

John ;-#)#

--
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd.
MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
(604)872-5757 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."

GBO-Usenet
Guest

Fri Jun 01, 2018 9:45 am   



Op donderdag 28 januari 1999 09:00:00 UTC+1 schreef gw...@redrose.net:
Quote:
Does any one have the rom code listing for the National Semiconductor
Digitalker (MM54104) speech roms. Just purchased (2) sets from Jameco, but
their first set was definitely bad, and with the second set, I'm not
convinced there not a problem with them. Any help would be greatly
appreciated. Thanks--Jerry

-----------== Posted via Deja News, The Discussion Network ==----------
http://www.dejanews.com/ Search, Read, Discuss, or Start Your Own


This reply might have taken a while, but beware that the Digitalker ROMs are a bit odd. For SSR1 and 5, CS needs to be high, for SSR2 and 6, CS needs to be low. If you use both, A13 of the MM54104 does this for you.

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