Sometimes I use a common 9V battery cell with clip leads to independently power up the HP 547a Current Tracer, independent of the PCB that I am testing, thus isolating the PCB board power(either On or

Sometimes I use a common 9V battery cell with clip leads to independently power up the HP 547a Current Tracer, independent of the PCB that I am testing, thus isolating the PCB board power( with PCB ei

The HP 547a Current Tracer theory & use was featured in the December 1976 issue of the HP Journal: a .pdf can be found at: https://scss.tcd.ie/SCSSTreasuresCatalog/hardware/TCD-SCSS-T.20160121.006/HPJ

I have used the HP 547a Current Tracer probe to find shorted Tantalum capacitors. It becomes pretty obvious via the intense red LED brightness(~ proportional to the current flow) which cap has failed.

hi, I need an HP 8340 Or HP 8341 Sig Gen non-working parts unit to repair my unit (multiple issues). A non-working, but complete 8340 Or 8341 would be good. Please contact me off-list, thank you, rick

For those with experience having, using GHz scopes, up to 20 to 50 GHz: to help the uninitiated here in selecting a used, slightly older "affordable" GHz scope. Can you briefly summarize your Selectio

The Russian Tunnel Diodes on eBay can be found by searching for the listing titled: "Switching tunnel diodes 1I308D" 10pcs The eBay seller is: "russhamma" The specs listed for these TD's are: Maximal

No. The Ballantine 6125a Oscilloscope Calibrator .pdf on BAMA is a different and older architecture. The 6125a does not incorporate the Tek SG503 nor Tek DM501 modules in the Ballantine 6 slot mainfra

Apologies, typo. Bernie !! rick

hi Bob, Yes, thank you, I saw that link. My mainframe arrived without the SG503. r

hi Bruce, I just acquired a Ballantine 6126M Oscilloscope Calibrator and its associated Time/Div. module in a browns Ballantine mainframe. My unit has some issues, and I would really appreciate having

Recent arrival: old Ballantine 6126M Oscilloscope Calibrator + a Ballantine Time/Div. module (model # ??), + a Tek DM 501 + an empty slot (?) in a brown (6-slot) Ballantine mainframe. a) Looking for t

Older version of the PG 506 arrived with an ~ 1/2" dented-in front panel at the LED - Variable Amplitude knob juncture. Looks like it took a nose-dive to a concrete floor ! a) The Grey/Black-Red Ampli

So... What of the THS 730a upgrade ? What exactly were the problems with that ? & how can each issue, in detail, be solved ? I have a THS720a and would like to upgrade it to the THS 730a. thanks, rick

hi, I am looking for an HP r/332 controller with KB, Mouse, internal CRT that Boots-Up. No dealers, nor companies; individual only. Please contact me off-list (Private). I will pay for shipping & for

Tek TDS 3014 scope Boots up & passes all 8 self-tests , but reports a "System Error" in the Graphics System: ( The BootUp Self-Test passes everything, including 'Application modules' -- even though th

hi, Other: Wanted an HP R/332 or 362 or 382 ( HP series 9000 300 ) controller. preferably with KB & CRT, alive, or dead ... Please reply via Private post { off list } , thank you, rick

hi, Spotted on eBay: Tek 545 with tubes for parts... $100 located in: Crimora, Virginia, https://www.ebay.ca/itm/Tektronix-545-Oscilloscope-O-Scope-Parts/192629154378?hash=item2cd997a24a:g:AegAAOSwNa1

Could someone please post the model # for a replacement of the Schaffner line filter unit for a standard 120V North American powered Tek 2215a scope ? Would this new "mysterious" replacement line filt

hi Ed, I believe that I had seen free .pdf manuals for the HP 70843b Error Performance Analyzer at the Kurt manuals site: https://doc.xdevs.com/doc/HP_Agilent_Keysight/index.htm However, a small quick