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Re: I'm old 70+, the 70K system is old; good or bad omen?
Not? a problem. How technology has changed, though.? I remember single hole electrolytics that mounted with a single nut.? Inside, I think, may have been a boric acid solution.? Of course, the
By Harvey White · #120430 ·
Re: I'm old 70+, the 70K system is old; good or bad omen?
Thanks Harvey, My mistakes see my other apologies. Regards Gene Sent: Tuesday, November 23, 2021 8:20 PM To: [email protected] Subject: Re: [HP-Agilent-Keysight-equipment] I'm
By Gene Silvernail · #120429 ·
Re: I'm old 70+, the 70K system is old; good or bad omen?
All, Disregard previous 70900A power supply capacitor statements I made. A case of head improperly arrange on my anatomy. My apologies. What¡¯s is now realized¡­duh The blue caps on the PS are NOT
By Gene Silvernail · #120428 ·
Re: I'm old 70+, the 70K system is old; good or bad omen?
Many of the typical capacitors with metal cans have more than one ground lug, arranged in a circle.? The lugs are, IIRC, only for grounding and mounting stability.? On the capacitors I've seen (not
By Harvey White · #120427 ·
Re: I'm old 70+, the 70K system is old; good or bad omen?
Thanks Kuba, Yeh coming from the era of tubes I had assumed a dual cap¡­so much for assuming. Now that¡¯s starting to make sense with the single component designator, but leaves the question which 2
By Gene Silvernail · #120426 ·
70900A Artek CLIP Manual
Working on the PS board of the 70900A and bought the CLIP from Artek. Beautifully clear images, excellent for what's there. Unfortunately, the one thing I really needed it for isn't, that being the PS
By Gene Silvernail · #120425 ·
Re: I'm old 70+, the 70K system is old; good or bad omen?
My assumption would be that the number of legs has not much to do with anything: it¡¯s a single capacitor each with 3 or 4 legs. Very common in that era. I¡¯ e got lots of contemporaneous Tektronix
By Kuba Sunderland-Ober · #120424 ·
Re: I'm old 70+, the 70K system is old; good or bad omen?
Thanks Paul, Just got the component location PDF on the site which provides me the PS cap numbers; also ordered the 70900A CLIP. However, looking at them I¡¯m confused further with the 3 leads. Only
By Gene Silvernail · #120423 ·
hp 33311-60039 absorbing SPDT specs?
https://www.testequipmenthq.com/datasheets/Agilent-33311B-Datasheet.pdf I am trying to locate the datasheet for for standard part without a suffix.?? The above datasheet depicts the A,B&C.? Any
By Joe Smith · #120422 ·
Re: I'm old 70+, the 70K system is old; good or bad omen?
Hi Gene sorry made a mistake the 3 legged caps are on the Vishay N -cap ?and can be found on the hp 70000 groups site. Regards Paul
By Paul Bicknell · #120421 ·
Re: I'm old 70+, the 70K system is old; good or bad omen?
Hi Gene re your comment about 3 lead not available I assume you have not looked at the file with the capacitor dater sheets for the 70900 that are in the files on this site regards Paul
By Paul Bicknell · #120420 ·
HP 8640B - internal counter suddenly got crazy
HP 8640B S/N 2350A23618. Modulation OFF (both AM and FM); Output set to -30dBm. INT/EXT (rear panel) set to INT; connecting REF OUT (rear panel) to COUNTER INPUT (and setting INT/EXT to EXT) the
By Emanuele Girlando · #120419 ·
Re: I'm old 70+, the 70K system is old; good or bad omen?
Yeh, Dan it losing step...back at it... Sent from my T-Mobile 5G Device Get Outlook for Android<https://aka.ms/AAb9ysg> ________________________________ Sent: Tuesday, November 23, 2021 8:17:55 AM To:
By Gene Silvernail · #120418 ·
Re: I'm old 70+, the 70K system is old; good or bad omen?
"Surely you could've taken it further last night.? Sleep is for the weak! ;)"To quote a character from one of (IIRC) Friedrich Duerrenmatt's short stories, "Schlafen ist Suende!" - sleep is a sin!?
By Jim Ford · #120417 ·
Re: I'm old 70+, the 70K system is old; good or bad omen?
That's a good start. Apparently! No, 7 capacitors. They are not dual capacitors; they simply have three leads. See the datasheet for Sprague (now Vishay) 672D. Surely you could've taken it further
By Dave McGuire · #120416 ·
Re: I'm old 70+, the 70K system is old; good or bad omen?
No burnt smell...no over amping any traces...all clean, a plus! Faraday has left the building!... None of the dual lead caps below are any where there spec...all running just a few uF even at 120 Hz.
By Gene Silvernail · #120415 ·
Re: BASIC on the HP 3396B Integrator II ?
O.K., the missing ROM was found by a fellow HP fan and a copy has been installed in my device. I now see that the core model has a BASIC interpreter built-in, but not the interactive BASIC system
By Martin Hepperle · #120414 ·
Re: I'm old 70+, the 70K system is old; good or bad omen?
Right-Oh DC > AC > DC I'm kind of like my dog... Sniff > Visual > Locate... bury the bone
By Gene Silvernail · #120413 ·
Re: : HP Spectrumanalyzer 851b and 852a
Hi Michael, did you check the addendums / change notes section of your manual already? These instruments obviously underwent a lot of changes in the beginning. For the 851A alone, I have a 1/2" stack
By ChrisBeee · #120412 ·
Re: I'm old 70+, the 70K system is old; good or bad omen?
"Human senses first"...take a look at where the leads exit those capacitors, look for some light charring or darkening around the leads. Target those first. Yes, something caused that fuse to blow.
By Dave McGuire · #120411 ·