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Well said, Steve! While power by isolation transformer itself is a very safe thing, people usually defeat the safety mechanism instantly by producing the first fault with the scope probe ground.

Steve, Thank you so much. AC connectors with a grounding pins are there for a very good reason. Any isolation should be an absolute last resort. Using an isolation transformer is dangerous and usually

Variac should have been spelled with a "c", not Varik. My mistake Steve

I don't quite agree with the phrase "An isolation transformer allows you to make measurements safely." While using an isolation transformer can let you make a floating measurement not referenced to

Hi all No matter what some of us may think, Canada still isn't our 51st state. Recently, Walter at Sphere made me an extremely generous deal on a manual, and asked for either a USPS international

Far better analysis than I could have ever done Vernonia Northern Has U2145 (156-0096-00 - LM311H) for $1.20 & U2110 (156-0223-00 - LM308) for $1.10 & U2010 (156-0292-00 -- 74L04) @ $0.35 each Chris

Bob, I have a 7B53A with bad switches that I am scraping. I can send you the working 155-0049-02 for $5 plus shipping[$2.06?]. send me your address and it will go out this morning. paypal

Scott, Do a search on Ebay for "tektronix probe tip" - there's tons of them out there, and most are fairly inexpensive. Mark

Hi Walter A long shot - you don't happen to have a 7854 keyboard lurking in a dusty corner? Kind regards Craig

sphere, vernonia northern, qservice, tucker... google the part number.

I have that manual, I cannot find half of A02 board. The full symptoms are these:- 20ns clock?disappeared;- there are 4 selectable groups in the setup screen;- each group has 16 bits available for

Dave, ? This new link does work.??I had already found your file by browsing the group files and was quite impressed.? Very nice professional work.? It looks to me that you have complemented the

Thanks Cslim.? I didnt get much time to work on it today.? But did do some visual inspection.? Many of the caps apear similar in color (copper/gold color) and manufacture.? I believe they are

This link doesn't seem to be working. Try this one: http://tech.groups.yahoo.com/group/TekScopes/files/U800/ Dave -=-=-=-

I'm bookmarking this. Thanks! -- George Sent from my iPad

Since I sent the parallel resistance spreadsheet to the forum many members have responded asking for a version that works in Excel. I am attaching such a file that works in Excel and it is

U2110 (LM308 style low bias current bipolar operational amplifier) is configured as a differential amplifier. The signal ground that the tu

Thanks Dennis, I will change my setup and remove the 7815 so it get ?> 16V unregulated. I will use a 1000 uF buffer. That should keep the lowest voltage in the ripple above 16V, but that is easy to

Hi Walter, I recently acquired a "regular" Tek 465 scope. Would the 465M front cover fit the 465? Thx, Al From: TekScopes@... [mailto:TekScopes@...] On Behalf Of wshawlee2

Try www.ebaman.com. It contains a copy of the army version service manual, it is complete and a good scan. You have to register to get access to the files, but it's free. You will find it in the Test