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Date
Re: HP 8595E Restore and Tracking Generator Questions
Oh, and if you are driving an inductive load like a relay coil, motor, or I suppose an incandescent bulb or a speaker, don't forget the flyback diode to protect the driving transistor.? A fast
By Jim Ford · #122495 ·
Re: HP 8595E Restore and Tracking Generator Questions
I figured as much. In that case, one would need to set the current high enough to reliably kick-start the relay coil but low enough not to burn up the coil.? Assuming that's possible. May not always
By Jim Ford · #122494 ·
Re: HP 8595E Restore and Tracking Generator Questions
Jim, HP uses a mechanically latched relay in the 8593E and others. But, the drive circuit is not an impulse type. The current is continuous, and leads to excess dissipation in the coils. Details here:
By Dave Wright · #122493 ·
Re: Stuff Season opens for 2022 Tuesday at Sphere
some folks are never happy no matter what you do and that cannot be fixed. you do the best you can at being fair and reasonable, then move on. Ren¨¦e
By Ren¨¦e · #122492 ·
Re: Stuff Season opens for 2022 Tuesday at Sphere
we have done *exactly* that, yet the flames continue. -walter
By walter shawlee <walter2@...> · #122491 ·
Re: HP - Agilent - Keysight 853A Spectrum Analyzer Display
Hello, I want to buy one HP - Agilent - Keysight 853A Spectrum Analyzer Display unity. Rasonable price send private email. Francesco. Sent: Tuesday, February 15, 2022 at 11:14 AM From: "Francesco"
By Francesco · #122490 ·
Re: Stuff Season opens for 2022 Tuesday at Sphere
Seems like a lot of time and effort to implement.? Nothing is impossible for the person that doesn't have to do it.....? No offense, Michael, just reality.? ? ? ? ? Jim FordSent from my
By Jim Ford · #122489 ·
Re: Stuff Season opens for 2022 Tuesday at Sphere
Give them a set time that you will hold something. Maybe seven days, to the minute. Post the message multiple places on your website, and in any replies. If they miss that date and someone else wants
By Michael A. Terrell · #122488 ·
Re: Stuff Season opens for 2022 Tuesday at Sphere
Bruce, that situation is very frustrating for us too. often, first thing in the morning after posting new stuff, when susan checks the order emails, there will be *three people all wanting the same
By walter shawlee <walter2@...> · #122487 ·
HP - Agilent - Keysight 853A Spectrum Analyzer Display
Hello, I luck to buy one HP - Agilent - Keysight 853A Spectrum Analyzer Display unity. send private email. Francesco.
By Francesco · #122486 ·
Re: Stuff Season opens for 2022 Tuesday at Sphere
What I would appreciate is your synchronizing your WEB site with your actual inventory. There have been multiple tis when I've found something on your site only tobe told that they were unavailable.
By Bruce · #122485 ·
Stuff Season opens for 2022 Tuesday at Sphere
We are finally done re-organizing and photographing new items, you will be able to see them HERE Tuesday, February 15th: https://www.sphere.bc.ca/test/stuffday.html We tried to satisfy as many
By walter shawlee <walter2@...> · #122484 ·
Re: Keysight 3458A Front panel grounding clip
I believe this is the part you are looking for -?1460-1311. Description? is Be-Cu leaf spring
By Kenneth Harrison · #122483 ·
Re: HP 8595E Restore and Tracking Generator Questions
Ah, the too much current for the relay coils issue.? About 20 years ago I had to design a circuit to put out a pulse of current to kick-start a relay.? The hold current necessary to keep the relay
By Jim Ford · #122482 ·
Re: Agilent E4416A series power meter
There were a couple of Agilent service notes relating to problems in the E4418B meter through a wide range of serial numbers where the units would not power up or at least give a display. I¡¯ll see
By Greg Muir · #122481 ·
Re: Waveguide items OT
Sorry HP/Agilent group. I clicked reply thinking it was private. I am trying to keep this away from this site but wanted people to have a chance at some nice items. I am in Deep River, Ontario,
Re: Waveguide items OT
My HP8757D is the problem. The two chassis are big and heavy and I don't want to ship them. I have a couple of interested parties. If not for this system I would be prepared to sell the waveguide in
Re: HP 8595E Restore and Tracking Generator Questions
Chad, For the money you will spend on getting together the components to add a tracking generator to your SA, you might want to consider any of the tiny VNA variations available. I have the 9593E with
By Dave Wright · #122478 ·
Re: Waveguide items OT
Hi Peter Sorry I assumed you lived in England as you didn¡¯t give your address when you did your posting as equipment for disposal Regards Paul South Coast England Sent: 14 February 2022 01:41 To:
Re: HP Service Note availability
<bump><again> Still have not found a collection - anyone else? Thanks!
By Harold Foster · #122476 ·