[time-nuts] ATT RFG-M-RB
I have a ATT RFG-M-RB not Lucent made around 1997. It is different because it does not have the usual Rubidium oscillator in it. It actually has two stacked boards and the lower one is the Rubidium Oscillator. The only thing in the can which snaps off is the physics package. I finally tracked down the frequency adjustment pot which is located on the lower board but there is a access hole in the upper board to access it. The hole in the metal can is not for frequency adjustment but it is a capacitor connected to the RF excitation coil for the lamp. It is very interesting and I would like to have data on it. The Rubidium oscillator is a Efratom 102100-003, this number is on the metal can and also the part number on the printed circuit board. The pin out on the top of the metal can matches the 14 single row pins that connect between the upper board and the Rubidium oscillator board. All thru hole parts . no SMT, including inside the rectangle metal can. 73 Bill wa4lav ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] magnetic electronic components
Hi, I was looking up some stuff and realized (again) that I don't know anything about how magnetic electronic components (inductors/solenoids, transfomers, baluns, ferrite beads...) work. Yes, I can calculate the inductance, I know how to get from the AL value to number of windings. But I don't know anything about the practical issues or where they come from. Unfortunatelly, this knowledge seems to generally rare among EEs (at least everyone I asked in the last couple of years) and books about it are either long out of print (with no pdf available) or more geared towards the physics student. So, does anyone have any recomendation where I could read up on this? Books, pdfs, webpages,... anything. Also something that covers more the application side, ie how to use ferrite beads/toroids to build devices, would be appreciated. Thanks in advance Attila Kinali -- I must not become metastable. Metastability is the mind-killer. Metastability is the little-death that brings total obliteration. I will face my metastability. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see its path. Where the metastability has gone there will be nothing. Only I will remain. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] GPS Signal Simulator for GnuRadio
Moin, This just came in trough my feeds. Maybe someone finds it interesting: https://github.com/osqzss/gps-sdr-sim Attila Kinali -- I must not become metastable. Metastability is the mind-killer. Metastability is the little-death that brings total obliteration. I will face my metastability. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see its path. Where the metastability has gone there will be nothing. Only I will remain. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] GPS Signal Simulator for GnuRadio
Nice. I threw one together too a few weeks ago: https://github.com/henryhallam/peregrine/commits/sig_gen Henry On Sun, Jun 21, 2015 at 11:33 PM, Attila Kinali att...@kinali.ch wrote: Moin, This just came in trough my feeds. Maybe someone finds it interesting: https://github.com/osqzss/gps-sdr-sim Attila Kinali -- I must not become metastable. Metastability is the mind-killer. Metastability is the little-death that brings total obliteration. I will face my metastability. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see its path. Where the metastability has gone there will be nothing. Only I will remain. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] magnetic electronic components
Hi The problem with coils (inductors) is that they are indeed on the “other side” of the physics / electrical engineering divide. They are not unique in this way. Most components are dealt with to a “equivalent model” level and then abandoned in engineering. You have two choices: 1) Read the physics stuff 2) Go back far enough that the divide had not occurred ( = 1950’s). Sorry about that …. Bob On Jun 22, 2015, at 2:02 PM, Attila Kinali att...@kinali.ch wrote: Hi, I was looking up some stuff and realized (again) that I don't know anything about how magnetic electronic components (inductors/solenoids, transfomers, baluns, ferrite beads...) work. Yes, I can calculate the inductance, I know how to get from the AL value to number of windings. But I don't know anything about the practical issues or where they come from. Unfortunatelly, this knowledge seems to generally rare among EEs (at least everyone I asked in the last couple of years) and books about it are either long out of print (with no pdf available) or more geared towards the physics student. So, does anyone have any recomendation where I could read up on this? Books, pdfs, webpages,... anything. Also something that covers more the application side, ie how to use ferrite beads/toroids to build devices, would be appreciated. Thanks in advance Attila Kinali -- I must not become metastable. Metastability is the mind-killer. Metastability is the little-death that brings total obliteration. I will face my metastability. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see its path. Where the metastability has gone there will be nothing. Only I will remain. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] magnetic electronic components
The techniques are still alive well in power electronics. Try looking at an introductory textbook on the subject. Engineers with decades of experience in this will design inductors, then trim them by hand to achieve the best results. One old guy would crack toroids in half, and then shim them with multiple cigarette papers to make a gapped core. Tom Harris celephi...@gmail.com On 23 June 2015 at 05:02, Attila Kinali att...@kinali.ch wrote: Hi, I was looking up some stuff and realized (again) that I don't know anything about how magnetic electronic components (inductors/solenoids, transfomers, baluns, ferrite beads...) work. Yes, I can calculate the inductance, I know how to get from the AL value to number of windings. But I don't know anything about the practical issues or where they come from. Unfortunatelly, this knowledge seems to generally rare among EEs (at least everyone I asked in the last couple of years) and books about it are either long out of print (with no pdf available) or more geared towards the physics student. So, does anyone have any recomendation where I could read up on this? Books, pdfs, webpages,... anything. Also something that covers more the application side, ie how to use ferrite beads/toroids to build devices, would be appreciated. Thanks in advance Attila Kinali -- I must not become metastable. Metastability is the mind-killer. Metastability is the little-death that brings total obliteration. I will face my metastability. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see its path. Where the metastability has gone there will be nothing. Only I will remain. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] magnetic electronic components
Try this to just get started: www.arrl.org/files/file/Technology/tis/info/pdf/8405015.pdf On Mon, Jun 22, 2015 at 9:02 PM, Attila Kinali att...@kinali.ch wrote: Hi, I was looking up some stuff and realized (again) that I don't know anything about how magnetic electronic components (inductors/solenoids, transfomers, baluns, ferrite beads...) work. Yes, I can calculate the inductance, I know how to get from the AL value to number of windings. But I don't know anything about the practical issues or where they come from. Unfortunatelly, this knowledge seems to generally rare among EEs (at least everyone I asked in the last couple of years) and books about it are either long out of print (with no pdf available) or more geared towards the physics student. So, does anyone have any recomendation where I could read up on this? Books, pdfs, webpages,... anything. Also something that covers more the application side, ie how to use ferrite beads/toroids to build devices, would be appreciated. Thanks in advance Attila Kinali -- I must not become metastable. Metastability is the mind-killer. Metastability is the little-death that brings total obliteration. I will face my metastability. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see its path. Where the metastability has gone there will be nothing. Only I will remain. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] magnetic electronic components
Although it's published by a vendor, this applications manual has a lot of useful information. http://www.we-online.com/web/en/electronic_components/produkte_pb/fachbuecher/Trilogie.php I was sufficiently impressed when I saw it at a trade show that I bought a copy, and they've reduce the price since then. On Mon, Jun 22, 2015 at 8:02 PM, Attila Kinali att...@kinali.ch wrote: Hi, I was looking up some stuff and realized (again) that I don't know anything about how magnetic electronic components (inductors/solenoids, transfomers, baluns, ferrite beads...) work. Yes, I can calculate the inductance, I know how to get from the AL value to number of windings. But I don't know anything about the practical issues or where they come from. Unfortunatelly, this knowledge seems to generally rare among EEs (at least everyone I asked in the last couple of years) and books about it are either long out of print (with no pdf available) or more geared towards the physics student. So, does anyone have any recomendation where I could read up on this? Books, pdfs, webpages,... anything. Also something that covers more the application side, ie how to use ferrite beads/toroids to build devices, would be appreciated. Thanks in advance Attila Kinali -- I must not become metastable. Metastability is the mind-killer. Metastability is the little-death that brings total obliteration. I will face my metastability. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see its path. Where the metastability has gone there will be nothing. Only I will remain. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
