开云体育

Jim how to contact you off group, would like the fuill list via email. I have a lot of them too, perhaps we can swap. Kind Regards, Jon

Thanks Albert, I get 80 volts across C1513, so it could be pushing close to 82 with ripple maybe. The line voltage selector is set correctly at 115. I don't know who wrote that on the schematic, it

As I noted earlier, the 465's CRT turned out to have a terminal fault. Since the internal construction is worth looking at, it seemed a pity to simply throw it in the bin, so I decided to chop it up

That would be quite a trick.

My view of old gear is that if it’s reasonably cosmetically sound and not missing parts, and isn’t needed for parts to fix an equivalent model in better overall condition, then it’s always worth

I fully agree. One way to avoid that mess is by enclosing the double quotes in your search term. Extra spaces between words are ignored but the word components of the search term change into an AND

I considered that theoretical possibility, but didn't include it in my post because I haven't seen it. Shame it turns out to be a practical problem.

I just saw again how really annoying it can be: try a search at the web site for "130 L-C meter". Albert ---In TekScopes@..., <tggzzz@...> wrote : More postings are becoming contaminated

As far as I can see the circuit protects against a too high +55V UNREG voltage. If higher than 82 V the SCR gets triggered and (eventually) the fuse will blow. Did you measure +55V UNREG (across

I have a 581A Tek scope I saved from the dumpster. It turns out that it doesn't trigger any signal at all. Worth looking into it? -- Christoph

Congrats. Do you also have a PG506 ? And SG503? -- Christoph

Hi to All, With several TM506A's it seems handy to me to convert the SG5010 for operating in one of these. The SG5010 has a provision to replace the GPIB/PLL Board a little more inside the enclosure.

Hi Neil, I think you' d better follow Raymond's advice. In diagram <8> you can see that U870 needs the -8V supply to establish Vee. You (and I) probably have no idea what consequences an absent -8V

Hi to All, Only a renewal of this Post in case somebody missed it. Greetings, Egge Siert

Hi again, It seems that nobody on this forum has this device and.or its Instruction/Data Sheet. Of course I will pay for this information. Therefore this request again. Greetings, Egge Siert

Thank you for all the help! After changing all the caps on the inverter and regulator boards, the voltages are perfectly centered as per the spec. limits. Ripple is 10x smaller. Traces are more crisp

More postings are becoming contaminated with "line noise" like "#yiv7938461022 #yiv7938461022 -- #yiv7" etc. I presume it is a de-html-ed version of the adverts at Yahoo! appends to each posting.

HiThanks to everyone for their comments and thoughts, very much appreciated.I've found a Tek 2200 series brochure and it lists the following differences: 100MHz bandwidth (2230), 60MHz (2220,2221)4K

I'm sure you can just file a flat even with the shaft installed on the scope. ST <TekScopes@...> wrote:

So it is not a problem with the CRT. When they get old, the trace becomes both dim and less well focused because of lack of emission from the cathode. There is another possibility with the CRT though.