Re: [time-nuts] Lucent KS-24361 24V DC power requirements
Thank you all for the answer to my query. cheers, Graham ve3gtc On 2014-11-21 21:17, Bob Camp wrote: Hi We’ve been around this one before. The KS boxes are powered by a switcher brick inside the box. There’s not a lot of reason go super crazy on the DC input. It’s fully isolated from the case ground. Even leakage / stray grounds should not be an issue in this situation. I would not run it off of raw un-filtered rectifier output. Anything that’s at least got a filter capacitor in it should do fine. Bob On Nov 21, 2014, at 3:19 PM, Neil Schroeder gign...@gmail.com wrote: I drive my prs10 with a parallel pair of ldos balanced by an op amp. I'll draw it out and post it if you like. On Friday, November 21, 2014, Azelio Boriani azelio.bori...@gmail.com wrote: At most you need 2.4A (when the two OCXOs are heating up): a 2.5A supply is needed. ___ 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] Lucent KS-24361 24V DC power requirements
On Fri, Nov 21, 2014 at 8:17 PM, Bob Camp kb...@n1k.org wrote: Hi We’ve been around this one before. The KS boxes are powered by a switcher brick inside the box. There’s not a lot of reason go super crazy on the DC input. It’s fully isolated from the case ground. Even leakage / stray grounds should not be an issue in this situation. I would not run it off of raw un-filtered rectifier output. Anything that’s at least got a filter capacitor in it should do fine. Or batteries. Two 12v batteries in series on float charge not only powers it nicely, it keeps everything going should the mains fail. You won't have to wait for it to reacquire and stabilize after a mains power failure. -- Brian Lloyd Lloyd Aviation 706 Flightline Drive Spring Branch, TX 78070 br...@lloyd.aero +1.210.802-8FLY (1.210.802-8359) ___ 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] Lucent KS-24361 24V DC power requirements
Good day all, I have been following the discussions as best as I could. I recell seeing the question asked or at least theorized as to what is the power requirements of these units - either individually or together. I have reviewed all messages or at least all that I can find in these threads but I couldn't find a definitive answer unless of course the answer is in one of the responses hiding where I haven't looked. I purchased a set of these modules and they are currently in transit but I don't have a 24V DC supply at the moment. So, in order to try and get ahead before the arrival of these modules I would like to at least plan out if not get a suitable power supply ready. I don't want to over specify by too much and worse yet, under specify. Has anyone actually made any power used measurements of these modules? 2A average, 4A peak? Somewhere inbetween or more? cheers, Graham ve3gtc ___ 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] Lucent KS-24361 24V DC power requirements
At most you need 2.4A (when the two OCXOs are heating up): a 2.5A supply is needed. On Fri, Nov 21, 2014 at 6:25 PM, planoph...@aei.ca wrote: Good day all, I have been following the discussions as best as I could. I recell seeing the question asked or at least theorized as to what is the power requirements of these units - either individually or together. I have reviewed all messages or at least all that I can find in these threads but I couldn't find a definitive answer unless of course the answer is in one of the responses hiding where I haven't looked. I purchased a set of these modules and they are currently in transit but I don't have a 24V DC supply at the moment. So, in order to try and get ahead before the arrival of these modules I would like to at least plan out if not get a suitable power supply ready. I don't want to over specify by too much and worse yet, under specify. Has anyone actually made any power used measurements of these modules? 2A average, 4A peak? Somewhere inbetween or more? cheers, Graham ve3gtc ___ 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] Lucent KS-24361 24V DC power requirements
I have been using a Universal 24V 5A DC Switching Power Supply from eBay. I have not seen my units draw more than 2A each - steady state is about 1.1A. Anthony -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of planoph...@aei.ca Sent: Friday, November 21, 2014 11:25 AM To: Discussion of precise time and frequency measurement Subject: [time-nuts] Lucent KS-24361 24V DC power requirements Good day all, I have been following the discussions as best as I could. I recell seeing the question asked or at least theorized as to what is the power requirements of these units - either individually or together. I have reviewed all messages or at least all that I can find in these threads but I couldn't find a definitive answer unless of course the answer is in one of the responses hiding where I haven't looked. I purchased a set of these modules and they are currently in transit but I don't have a 24V DC supply at the moment. So, in order to try and get ahead before the arrival of these modules I would like to at least plan out if not get a suitable power supply ready. I don't want to over specify by too much and worse yet, under specify. Has anyone actually made any power used measurements of these modules? 2A average, 4A peak? Somewhere inbetween or more? cheers, Graham ve3gtc ___ 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] Lucent KS-24361 24V DC power requirements
I think Bob mentioned it before Laptop power supplies make good power sources. Older units like in my case an old Dell 20V 3.5 A is perfect. They still have plenty of input and output filtering and build for lomg term operation. Never throw away a laptop supply. Late models are lower power and less filtering. Bert Kehren In a message dated 11/21/2014 4:42:29 P.M. Eastern Standard Time, ar...@antamy.com writes: I have been using a Universal 24V 5A DC Switching Power Supply from eBay. I have not seen my units draw more than 2A each - steady state is about 1.1A. Anthony -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of planoph...@aei.ca Sent: Friday, November 21, 2014 11:25 AM To: Discussion of precise time and frequency measurement Subject: [time-nuts] Lucent KS-24361 24V DC power requirements Good day all, I have been following the discussions as best as I could. I recell seeing the question asked or at least theorized as to what is the power requirements of these units - either individually or together. I have reviewed all messages or at least all that I can find in these threads but I couldn't find a definitive answer unless of course the answer is in one of the responses hiding where I haven't looked. I purchased a set of these modules and they are currently in transit but I don't have a 24V DC supply at the moment. So, in order to try and get ahead before the arrival of these modules I would like to at least plan out if not get a suitable power supply ready. I don't want to over specify by too much and worse yet, under specify. Has anyone actually made any power used measurements of these modules? 2A average, 4A peak? Somewhere inbetween or more? cheers, Graham ve3gtc ___ 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. ___ 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] Lucent KS-24361 24V DC power requirements
Hi I have run mine from anything from 22V to 30V and seen no problems. I had trouble on a pair with a 2A 24V supply. The pairs seem to settle down to about 1A at 30V after warmup in my lab. The supplies are rated to 18V input. I would not trust them at that low a voltage. There are some coils running around in the box and voltages into the supply will be lower than at the input pins. Even if you buy the brand new supplies from TRC (or your local MeanWell distributor) a full up supply for a pair is $30. The auction sites are indeed a bit cheaper on some auctions. Bob On Nov 21, 2014, at 12:50 PM, Anthony Roby ar...@antamy.com wrote: I have been using a Universal 24V 5A DC Switching Power Supply from eBay. I have not seen my units draw more than 2A each - steady state is about 1.1A. Anthony -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of planoph...@aei.ca Sent: Friday, November 21, 2014 11:25 AM To: Discussion of precise time and frequency measurement Subject: [time-nuts] Lucent KS-24361 24V DC power requirements Good day all, I have been following the discussions as best as I could. I recell seeing the question asked or at least theorized as to what is the power requirements of these units - either individually or together. I have reviewed all messages or at least all that I can find in these threads but I couldn't find a definitive answer unless of course the answer is in one of the responses hiding where I haven't looked. I purchased a set of these modules and they are currently in transit but I don't have a 24V DC supply at the moment. So, in order to try and get ahead before the arrival of these modules I would like to at least plan out if not get a suitable power supply ready. I don't want to over specify by too much and worse yet, under specify. Has anyone actually made any power used measurements of these modules? 2A average, 4A peak? Somewhere inbetween or more? cheers, Graham ve3gtc ___ 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. ___ 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] Lucent KS-24361 24V DC power requirements
Just to clarify, each unit (no more than 2 and steady about 1.1A) or both units together? cheers, Graham ve3gtc On 2014-11-21 12:50, Anthony Roby wrote: I have been using a Universal 24V 5A DC Switching Power Supply from eBay. I have not seen my units draw more than 2A each - steady state is about 1.1A. Anthony -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of planoph...@aei.ca Sent: Friday, November 21, 2014 11:25 AM To: Discussion of precise time and frequency measurement Subject: [time-nuts] Lucent KS-24361 24V DC power requirements Good day all, I have been following the discussions as best as I could. I recell seeing the question asked or at least theorized as to what is the power requirements of these units - either individually or together. I have reviewed all messages or at least all that I can find in these threads but I couldn't find a definitive answer unless of course the answer is in one of the responses hiding where I haven't looked. I purchased a set of these modules and they are currently in transit but I don't have a 24V DC supply at the moment. So, in order to try and get ahead before the arrival of these modules I would like to at least plan out if not get a suitable power supply ready. I don't want to over specify by too much and worse yet, under specify. Has anyone actually made any power used measurements of these modules? 2A average, 4A peak? Somewhere inbetween or more? cheers, Graham ve3gtc ___ 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. ___ 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] Lucent KS-24361 24V DC power requirements
Hi A bit over 2A for the pair at turn on. About 1A for the pair after warmup. Bob On Nov 21, 2014, at 6:23 PM, Graham planoph...@aei.ca wrote: Just to clarify, each unit (no more than 2 and steady about 1.1A) or both units together? cheers, Graham ve3gtc On 2014-11-21 12:50, Anthony Roby wrote: I have been using a Universal 24V 5A DC Switching Power Supply from eBay. I have not seen my units draw more than 2A each - steady state is about 1.1A. Anthony -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of planoph...@aei.ca Sent: Friday, November 21, 2014 11:25 AM To: Discussion of precise time and frequency measurement Subject: [time-nuts] Lucent KS-24361 24V DC power requirements Good day all, I have been following the discussions as best as I could. I recell seeing the question asked or at least theorized as to what is the power requirements of these units - either individually or together. I have reviewed all messages or at least all that I can find in these threads but I couldn't find a definitive answer unless of course the answer is in one of the responses hiding where I haven't looked. I purchased a set of these modules and they are currently in transit but I don't have a 24V DC supply at the moment. So, in order to try and get ahead before the arrival of these modules I would like to at least plan out if not get a suitable power supply ready. I don't want to over specify by too much and worse yet, under specify. Has anyone actually made any power used measurements of these modules? 2A average, 4A peak? Somewhere inbetween or more? cheers, Graham ve3gtc ___ 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. ___ 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] Lucent KS-24361 24V DC power requirements
I drive my prs10 with a parallel pair of ldos balanced by an op amp. I'll draw it out and post it if you like. On Friday, November 21, 2014, Azelio Boriani azelio.bori...@gmail.com wrote: At most you need 2.4A (when the two OCXOs are heating up): a 2.5A supply is needed. On Fri, Nov 21, 2014 at 6:25 PM, planoph...@aei.ca javascript:; wrote: Good day all, I have been following the discussions as best as I could. I recell seeing the question asked or at least theorized as to what is the power requirements of these units - either individually or together. I have reviewed all messages or at least all that I can find in these threads but I couldn't find a definitive answer unless of course the answer is in one of the responses hiding where I haven't looked. I purchased a set of these modules and they are currently in transit but I don't have a 24V DC supply at the moment. So, in order to try and get ahead before the arrival of these modules I would like to at least plan out if not get a suitable power supply ready. I don't want to over specify by too much and worse yet, under specify. Has anyone actually made any power used measurements of these modules? 2A average, 4A peak? Somewhere inbetween or more? cheers, Graham ve3gtc ___ time-nuts mailing list -- time-nuts@febo.com javascript:; 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 javascript:; 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] Lucent KS-24361 24V DC power requirements
Hi We’ve been around this one before. The KS boxes are powered by a switcher brick inside the box. There’s not a lot of reason go super crazy on the DC input. It’s fully isolated from the case ground. Even leakage / stray grounds should not be an issue in this situation. I would not run it off of raw un-filtered rectifier output. Anything that’s at least got a filter capacitor in it should do fine. Bob On Nov 21, 2014, at 3:19 PM, Neil Schroeder gign...@gmail.com wrote: I drive my prs10 with a parallel pair of ldos balanced by an op amp. I'll draw it out and post it if you like. On Friday, November 21, 2014, Azelio Boriani azelio.bori...@gmail.com wrote: At most you need 2.4A (when the two OCXOs are heating up): a 2.5A supply is needed. On Fri, Nov 21, 2014 at 6:25 PM, planoph...@aei.ca javascript:; wrote: Good day all, I have been following the discussions as best as I could. I recell seeing the question asked or at least theorized as to what is the power requirements of these units - either individually or together. I have reviewed all messages or at least all that I can find in these threads but I couldn't find a definitive answer unless of course the answer is in one of the responses hiding where I haven't looked. I purchased a set of these modules and they are currently in transit but I don't have a 24V DC supply at the moment. So, in order to try and get ahead before the arrival of these modules I would like to at least plan out if not get a suitable power supply ready. I don't want to over specify by too much and worse yet, under specify. Has anyone actually made any power used measurements of these modules? 2A average, 4A peak? Somewhere inbetween or more? cheers, Graham ve3gtc ___ time-nuts mailing list -- time-nuts@febo.com javascript:; 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 javascript:; 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. ___ 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.
