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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
Posted to sci.electronics.components,sci.electronics.basics,sci.electronics.design,sci.electronics.repair
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHz crystal/ ceramic resonators
Hi,
how to make a crystal /ceramic oscilator for a specicfied frequency in kHz range ? Is it posssible to make one on myself, or find someone to make it ? What is a minimum order quantity for a crystal/c eramic resonator for a specified frequency (kHz) ? Please help me. |
#2
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHz crystal/ ceramic resonators
On Wed, 15 Nov 2006 11:34:36 -0800, la-la wrote:
Hi, how to make a crystal /ceramic oscilator for a specicfied frequency in kHz range ? Is it posssible to make one on myself, or find someone to make it ? What is a minimum order quantity for a crystal/c eramic resonator for a specified frequency (kHz) ? Please help me. Try a CD4060 - http://www.fairchildsemi.com/ds/CD/CD4060BC.pdf Then you can use a sane crystal freq. ;-) Or, you could look into "tuning fork crystals", which is the type of the 32.768KHz crystal in your wris****ch. Good Luck! Rich |
#3
Posted to sci.electronics.components,sci.electronics.basics,sci.electronics.design,sci.electronics.repair
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHz crystal/ceramic resonators
la-la wrote:
Hi, how to make a crystal /ceramic oscilator for a specicfied frequency in kHz range ? Is it posssible to make one on myself, or find someone to make it ? What is a minimum order quantity for a crystal/c eramic resonator for a specified frequency (kHz) ? Please help me. We have many tens of thousands of crystal oscillator modules in stock at fifty cents each. Our lowest frequencies are 28.8 kHz, 108 kHz, 153.6 kHz, 250 kHz, 256 kHz, 307.2 kHz, 326.4 kHz plus hundreds of higher frequencies. In general, it is usually cheaper and simpler to use a higher frequency and a CMOS binary divider. Also in general, if your system does not use a crystal frequency of 32.768 kHz or 3.59545 MHz, you should flush it and start over. -- Many thanks, Don Lancaster voice phone: (928)428-4073 Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552 rss: http://www.tinaja.com/whtnu.xml email: Please visit my GURU's LAIR web site at http://www.tinaja.com |
#4
Posted to sci.electronics.components,sci.electronics.basics,sci.electronics.design,sci.electronics.repair
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHz crystal/ceramic resonators
Don Lancaster wrote:
la-la wrote: Hi, how to make a crystal /ceramic oscilator for a specicfied frequency in kHz range ? Is it posssible to make one on myself, or find someone to make it ? What is a minimum order quantity for a crystal/c eramic resonator for a specified frequency (kHz) ? Please help me. We have many tens of thousands of crystal oscillator modules in stock at fifty cents each. Our lowest frequencies are 28.8 kHz, 108 kHz, 153.6 kHz, 250 kHz, 256 kHz, 307.2 kHz, 326.4 kHz plus hundreds of higher frequencies. In general, it is usually cheaper and simpler to use a higher frequency and a CMOS binary divider. Also in general, if your system does not use a crystal frequency of 32.768 kHz or 3.59545 MHz, you should flush it and start over. Oops. Should be 3.579545 of course. -- Many thanks, Don Lancaster voice phone: (928)428-4073 Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552 rss: http://www.tinaja.com/whtnu.xml email: Please visit my GURU's LAIR web site at http://www.tinaja.com |
#5
Posted to sci.electronics.components,sci.electronics.basics,sci.electronics.design,sci.electronics.repair
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHz crystal/ceramic resonators
On a sunny day (Wed, 15 Nov 2006 13:19:46 -0700) it happened Don Lancaster
wrote in : Also in general, if your system does not use a crystal frequency of 32.768 kHz or 3.59545 MHz, you should flush it and start over. Poor guy ;-) |
#6
Posted to sci.electronics.components,sci.electronics.basics,sci.electronics.design,sci.electronics.repair
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHz crystal/ ceramic resonators
Don Lancaster wrote in
: Don Lancaster wrote: la-la wrote: Hi, how to make a crystal /ceramic oscilator for a specicfied frequency in kHz range ? Is it posssible to make one on myself, or find someone to make it ? What is a minimum order quantity for a crystal/c eramic resonator for a specified frequency (kHz) ? Please help me. We have many tens of thousands of crystal oscillator modules in stock at fifty cents each. Our lowest frequencies are 28.8 kHz, 108 kHz, 153.6 kHz, 250 kHz, 256 kHz, 307.2 kHz, 326.4 kHz plus hundreds of higher frequencies. In general, it is usually cheaper and simpler to use a higher frequency and a CMOS binary divider. Also in general, if your system does not use a crystal frequency of 32.768 kHz or 3.59545 MHz, you should flush it and start over. Oops. Should be 3.579545 of course. 32.768 kHz is 2^15 Hz Where does 3.579545 MHz come from? |
#7
Posted to sci.electronics.components,sci.electronics.basics,sci.electronics.design,sci.electronics.repair
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHzcrystal/ceramic resonators
Don Lancaster wrote:
la-la wrote: Hi, how to make a crystal /ceramic oscilator for a specicfied frequency in kHz range ? Is it posssible to make one on myself, or find someone to make it ? What is a minimum order quantity for a crystal/c eramic resonator for a specified frequency (kHz) ? Please help me. We have many tens of thousands of crystal oscillator modules in stock at fifty cents each. Our lowest frequencies are 28.8 kHz, 108 kHz, 153.6 kHz, 250 kHz, 256 kHz, 307.2 kHz, 326.4 kHz plus hundreds of higher frequencies. In general, it is usually cheaper and simpler to use a higher frequency and a CMOS binary divider. Also in general, if your system does not use a crystal frequency of 32.768 kHz or 3.59545 MHz, you should flush it and start over. So, if I need a 4 MHz clock for a CPU, I should scrap it and make it a lot more complex to use a color burst crystal? How about those 10- MHz frequency standards? Show me a SIMPLE design for a TCXO to proved a low distortion 10 MHz signal from a 3.5795454545 crystal. Yes, i know that it can be done, but why? There are dozens of common, off the shelf crystal frequencies that are dirt cheap. -- Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida |
#8
Posted to sci.electronics.components,sci.electronics.basics,sci.electronics.design,sci.electronics.repair
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHz crystal/ ceramic resonators
la-la wrote: how to make a crystal /ceramic oscilator for a specified frequency in kHz range ? The speed of sound in quartz is (depending on shear vs. compression wave) 400 to 600 m/second; so a quartz slab resonant at 3.579 MHz is a tenth of a millimeter thick. Those (AT cut typically) are mass-produced for television sets, and are inexpensive and available off the shelf. At 15 kHz, an AT quartz resonator would need to be (in size) about 200 times that, 2 cm thick (and broader than it is thick, so it'd be a Frisbee-sized disk). They don't make those, as far as I know. Normal mortals couldn't afford one. For wris****ches, a tuning-fork is used, and one can micromachine it from quartz and laser-trim its weighted tines for frequency and couple to it using the quartz material's piezoelectric properties. Those are mechanical oscillators with non-quartz parts, but they still get called 'quartz resonators'. The common frequencies are mass-produced, and that means 32.000 kHz and 32.768 are available, but not the lower frequencies you ask about. The typical resonators used for 5 kHz are tuning forks and guitar strings, or they aren't mechanical at all... |
#9
Posted to sci.electronics.components,sci.electronics.basics,sci.electronics.design,sci.electronics.repair
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHz crystal/ ceramic resonators
"Don Lancaster" wrote in message
... Also in general, if your system does not use a crystal frequency of 32.768 kHz or 3.59545 MHz, you should flush it and start over. Not all of us are trying to build TV Typewriters for $5 or less, Don. :-) But if you can find me some way to get VHF and low UHF signals down to a 45MHz IF with 32kHz and colorburst crystals, I'd love to hear it! |
#10
Posted to sci.electronics.components,sci.electronics.basics,sci.electronics.design,sci.electronics.repair
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHz crystal/ ceramic resonators
At 15 kHz, an AT quartz resonator would need to be (in size) about 200 times that, 2 cm thick (and broader than it is thick, so it'd be a Frisbee-sized disk). They don't make those, as far as I know. Normal mortals couldn't afford one. This guy came close , quartz ring, not a frisbee, but close : http://www.btinternet.com/~time.lord/QuartzRings.html Steve Roberts |
#11
Posted to sci.electronics.components,sci.electronics.basics,sci.electronics.design,sci.electronics.repair
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHz crystal/ceramic resonators
On Wed, 15 Nov 2006 21:32:49 +0000, Michael A. Terrell wrote:
Don Lancaster wrote: la-la wrote: how to make a crystal /ceramic oscilator for a specicfied frequency in kHz range ? Is it posssible to make one on myself, or find someone to make it ? What is a minimum order quantity for a crystal/c eramic resonator for a specified frequency (kHz) ? Please help me. We have many tens of thousands of crystal oscillator modules in stock at fifty cents each. Our lowest frequencies are 28.8 kHz, 108 kHz, 153.6 kHz, 250 kHz, 256 kHz, 307.2 kHz, 326.4 kHz plus hundreds of higher frequencies. In general, it is usually cheaper and simpler to use a higher frequency and a CMOS binary divider. Also in general, if your system does not use a crystal frequency of 32.768 kHz or 3.59545 MHz, you should flush it and start over. So, if I need a 4 MHz clock for a CPU, I should scrap it and make it a lot more complex to use a color burst crystal? How about those 10- MHz frequency standards? Show me a SIMPLE design for a TCXO to proved a low distortion 10 MHz signal from a 3.5795454545 crystal. Yes, i know that it can be done, but why? There are dozens of common, off the shelf crystal frequencies that are dirt cheap. But color burst crystals are free, if the neighbor tosses their TV. ;-) Cheers! Rich |
#12
Posted to sci.electronics.components,sci.electronics.basics,sci.electronics.design,sci.electronics.repair
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHz crystal/ceramic resonators
wrote:
At 15 kHz, an AT quartz resonator would need to be (in size) about 200 times that, 2 cm thick (and broader than it is thick, so it'd be a Frisbee-sized disk). They don't make those, as far as I know. Normal mortals couldn't afford one. This guy came close , quartz ring, not a frisbee, but close : http://www.btinternet.com/~time.lord/QuartzRings.html Steve Roberts Statek used to be the original source for tuning fork style crystals, which is what you need at low kilohertz frequencies. http://www.statek.com/ -- Many thanks, Don Lancaster voice phone: (928)428-4073 Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552 rss: http://www.tinaja.com/whtnu.xml email: Please visit my GURU's LAIR web site at http://www.tinaja.com |
#13
Posted to sci.electronics.components,sci.electronics.basics,sci.electronics.design,sci.electronics.repair
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHz crystal/ ceramic resonators
On Wed, 15 Nov 2006 17:20:44 -0700, Don Lancaster
wrote: wrote: At 15 kHz, an AT quartz resonator would need to be (in size) about 200 times that, 2 cm thick (and broader than it is thick, so it'd be a Frisbee-sized disk). They don't make those, as far as I know. Normal mortals couldn't afford one. This guy came close , quartz ring, not a frisbee, but close : http://www.btinternet.com/~time.lord/QuartzRings.html Steve Roberts Statek used to be the original source for tuning fork style crystals, which is what you need at low kilohertz frequencies. http://www.statek.com/ --- You beat me to it! These are wonderful people. -- JF |
#15
Posted to sci.electronics.components,sci.electronics.basics,sci.electronics.design,sci.electronics.repair
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHzcrystal/ceramic resonators
Don Lancaster wrote: Don Lancaster wrote: Also in general, if your system does not use a crystal frequency of 32.768 kHz or 3.59545 MHz, you should flush it and start over. Oops. Should be 3.579545 of course. What's wrong with 4.433618 MHz ? Graham |
#16
Posted to sci.electronics.components,sci.electronics.basics,sci.electronics.design,sci.electronics.repair
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHzcrystal/ceramic resonators
"Michael A. Terrell" wrote: Don Lancaster wrote: la-la wrote: Hi, how to make a crystal /ceramic oscilator for a specicfied frequency in kHz range ? Is it posssible to make one on myself, or find someone to make it ? What is a minimum order quantity for a crystal/c eramic resonator for a specified frequency (kHz) ? Please help me. We have many tens of thousands of crystal oscillator modules in stock at fifty cents each. Our lowest frequencies are 28.8 kHz, 108 kHz, 153.6 kHz, 250 kHz, 256 kHz, 307.2 kHz, 326.4 kHz plus hundreds of higher frequencies. In general, it is usually cheaper and simpler to use a higher frequency and a CMOS binary divider. Also in general, if your system does not use a crystal frequency of 32.768 kHz or 3.59545 MHz, you should flush it and start over. So, if I need a 4 MHz clock for a CPU, I should scrap it and make it a lot more complex to use a color burst crystal? How about those 10- MHz frequency standards? Show me a SIMPLE design for a TCXO to proved a low distortion 10 MHz signal from a 3.5795454545 crystal. Yes, i know that it can be done, but why? There are dozens of common, off the shelf crystal frequencies that are dirt cheap. In reality TV crystals are no cheaper than other popular frequencies. I've normally used 4, 8, 12 and 16 MHz for my microcontoller designs and there have been no problems either sourcing them or with the price. Graham |
#17
Posted to sci.electronics.components,sci.electronics.basics,sci.electronics.design,sci.electronics.repair
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHzcrystal/ceramic resonators
Eeyore wrote:
"Michael A. Terrell" wrote: Don Lancaster wrote: la-la wrote: Hi, how to make a crystal /ceramic oscilator for a specicfied frequency in kHz range ? Is it posssible to make one on myself, or find someone to make it ? What is a minimum order quantity for a crystal/c eramic resonator for a specified frequency (kHz) ? Please help me. We have many tens of thousands of crystal oscillator modules in stock at fifty cents each. Our lowest frequencies are 28.8 kHz, 108 kHz, 153.6 kHz, 250 kHz, 256 kHz, 307.2 kHz, 326.4 kHz plus hundreds of higher frequencies. In general, it is usually cheaper and simpler to use a higher frequency and a CMOS binary divider. Also in general, if your system does not use a crystal frequency of 32.768 kHz or 3.59545 MHz, you should flush it and start over. So, if I need a 4 MHz clock for a CPU, I should scrap it and make it a lot more complex to use a color burst crystal? How about those 10- MHz frequency standards? Show me a SIMPLE design for a TCXO to proved a low distortion 10 MHz signal from a 3.5795454545 crystal. Yes, i know that it can be done, but why? There are dozens of common, off the shelf crystal frequencies that are dirt cheap. In reality TV crystals are no cheaper than other popular frequencies. I've normally used 4, 8, 12 and 16 MHz for my microcontoller designs and there have been no problems either sourcing them or with the price. Graham If you only need one or two, you can usually pull a crystal or two from a jun TV set for free. I probably have 100 on hand from dead TV sets. -- Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida |
#18
Posted to sci.electronics.components,sci.electronics.basics,sci.electronics.design,sci.electronics.repair
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHzcrystal/ceramic resonators
"Michael A. Terrell" wrote: Eeyore wrote: In reality TV crystals are no cheaper than other popular frequencies. I've normally used 4, 8, 12 and 16 MHz for my microcontoller designs and there have been no problems either sourcing them or with the price. Graham If you only need one or two, you can usually pull a crystal or two from a jun TV set for free. I probably have 100 on hand from dead TV sets. I don't build stuff with salvaged parts though. Graham |
#19
Posted to sci.electronics.components,sci.electronics.basics,sci.electronics.design,sci.electronics.repair
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHz crystal/ ceramic resonators
la-la wrote:
thanks whit3rd. Tuning fork is exactly what I need but still as an electronic component. Is it possible to place an order for a specified frequency tuned tuning fork or retune, fine retune one already manufactured. Is machining, laser burning a good way to retune one tuning work to a preferred frequency ? Clock resonators are quite small (built as tuning forks). Does it mean I can expect 5Khz, 10Khz, 15Khz tuning fork to be of the like size ? And is it feasible to place an order for a sample of pretuned kHz tuning forks with one company, lab or a private person and them manufactured and develivered at a reasonable price and in foreseeable future ? Thanks once again for your kind input. time you told us why you want one of this freq. Without that, who knows what options are most suitable. App, quantity, tolerance and so on. NT |
#20
Posted to sci.electronics.components,sci.electronics.basics,sci.electronics.design,sci.electronics.repair
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHzcrystal/ceramic resonators
Eeyore wrote:
"Michael A. Terrell" wrote: Eeyore wrote: In reality TV crystals are no cheaper than other popular frequencies. I've normally used 4, 8, 12 and 16 MHz for my microcontoller designs and there have been no problems either sourcing them or with the price. Graham If you only need one or two, you can usually pull a crystal or two from a jun TV set for free. I probably have 100 on hand from dead TV sets. I don't build stuff with salvaged parts though. Graham I will use them for prototypes, or to repair my personal equipment. The failure rate on crystals is so low that it doesn't make sense to buy a new part, when I have something on hand that is likely to outlast the equipment. -- Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida |
#21
Posted to sci.electronics.components,sci.electronics.basics,sci.electronics.design,sci.electronics.repair
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHz crystal/ ceramic resonators
Ok.
Nothing special. Just testing wireless power/energy transfer, following Tesla's ideas and one developed recently at MIT. I am testing acoustic frequencies at first. wrote: la-la wrote: thanks whit3rd. Tuning fork is exactly what I need but still as an electronic component. Is it possible to place an order for a specified frequency tuned tuning fork or retune, fine retune one already manufactured. Is machining, laser burning a good way to retune one tuning work to a preferred frequency ? Clock resonators are quite small (built as tuning forks). Does it mean I can expect 5Khz, 10Khz, 15Khz tuning fork to be of the like size ? And is it feasible to place an order for a sample of pretuned kHz tuning forks with one company, lab or a private person and them manufactured and develivered at a reasonable price and in foreseeable future ? Thanks once again for your kind input. time you told us why you want one of this freq. Without that, who knows what options are most suitable. App, quantity, tolerance and so on. NT |
#22
Posted to sci.electronics.components,sci.electronics.basics,sci.electronics.design,sci.electronics.repair
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHz crystal/ceramic resonators
la-la wrote:
Ok. Nothing special. Just testing wireless power/energy transfer, following Tesla's ideas and one developed recently at MIT. I am testing acoustic frequencies at first. Why do you need crystals? A tunable audio generator, of function generator would work well at those frequencies. -- Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida |
#23
Posted to sci.electronics.components,sci.electronics.basics,sci.electronics.design,sci.electronics.repair
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHz crystal/ ceramic resonators
On 16 Nov 2006 01:27:03 -0800, "la-la"
wrote: Ok. Nothing special. Just testing wireless power/energy transfer, following Tesla's ideas and one developed recently at MIT. I am testing acoustic frequencies at first. Since this is just a test, and since you are using audio frequencies, why not just use a standard audio function generator? If you really need a stable audio frequency, you might want to check out my DaqGen freeware. It generates audio frequency waveforms with your Windows soundcard. Frequency stability is excellent since it derives from the crystal in the sound card. And unlike a homebrew circuit, you can get low-distortion sine waves, or just about any other waveshape you can imagine. Then if your experiments uncover anything worth following up, you can always build a dedicated circuit when you know just what the ideal parameters are. Best regards, Bob Masta dqatechATdaqartaDOTcom D A Q A R T A Data AcQuisition And Real-Time Analysis www.daqarta.com Home of DaqGen, the FREEWARE signal generator |
#24
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHz crystal/ ceramic resonators
"Michael A. Terrell" wrote in
: Why do you need crystals? A tunable audio generator, of function generator would work well at those frequencies. Hi Michael, this is completely off topic, but I have beeen trying to send an order to you over two weeks...is your email working..I am the guy from Australia. |
#25
Posted to sci.electronics.components,sci.electronics.basics,sci.electronics.design,sci.electronics.repair
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHzcrystal/ceramic resonators
On a sunny day (Thu, 16 Nov 2006 02:46:07 +0000) it happened Eeyore
wrote in : Don Lancaster wrote: Don Lancaster wrote: Also in general, if your system does not use a crystal frequency of 32.768 kHz or 3.59545 MHz, you should flush it and start over. Oops. Should be 3.579545 of course. What's wrong with 4.433618 MHz ? Graham In fact most analog PAL TVs will have a 8.86 MHz xtal. Makes it easier to get 90 degrees. As for the OP remark, makes no sense. If you want a one second tick, and for example have a FPGA on board, it is one line of verilog from a 50MHz xtal. Not much more lines of ASM in a PIC with a 20 MHz xtal. Depending on how much jitter is allowed you can make a nice synthesiser too in FPGA for many frequencies (higher the xtal too). And finally the color subcarrier... will likely not be needed much longer, its is all going digital, or at least Y Cr Cb, not composite. |
#26
Posted to sci.electronics.components,sci.electronics.basics,sci.electronics.design,sci.electronics.repair
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHz crystal/ ceramic resonators
la-la wrote:
Hi, how to make a crystal /ceramic oscilator for a specicfied frequency in kHz range ? Is it posssible to make one on myself, or find someone to make it ? What is a minimum order quantity for a crystal/c eramic resonator for a specified frequency (kHz) ? Please help me. Many useful frequencies from 20kHz on up are standard stock items at digikey. Less than a dollar for a standard value. Custom ordering one is possible, but will typically be $100+ or so and will have a turnaround time measured in a week or two. If you just want a square-wave oscillator there are many techniques (including user-programmable or distributor-programmable oscillator modules) that may do the job depending on your phase noise/jitter requirements. If you want a sine wave oscillator there are numerically programmed direct digital synthesizers for a few bucks that do well for many (but not all) applications. Tim. |
#27
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How to make, where to buy, order 5 kHz, 10 kHz, 15 kHz crystal/ ceramic resonators
la-la wrote:
wrote: time you told us why you want one of this freq. Without that, who knows what options are most suitable. App, quantity, tolerance and so on. Ok. Nothing special. Just testing wireless power/energy transfer, following Tesla's ideas and one developed recently at MIT. I am testing acoustic frequencies at first. then you dont need this xtal at all. NT |
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