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The better capacitors are needed for switching power supplies so there was not a lot of consumer demand for them back when the 7A13 was produced. Aluminum electrolytics are a lot better than they

Hi Ken- It's a cool instrument. It's the only storage mainframe for letter and 1 series plug-in units. When running a 1L5 at slow, high resolution sweeps, it can be indispensable! Basically, when

I considered the same question a couple years ago and went with a 2440 because the Rigol lacks peak detection. They have envelope detection which they call peak detection but that is not the same. I

The first step in getting help is to admit you have a problem. I have multiple scope disorder. There I said it. As I write this, there are at least ten Tek scopes around me fighting for space. (I

Thanks Keith: My next door neighbor has the scope at his business. He hasn't used it for years and it is gathering dust there. I'll have to help haul it out of there as it's too heavy for him to

Hi John, The power supply voltages look good. -8.59, 5.2V, 8.62V, 30.07V, 102V I checked the voltages around U130 and U180 and they appear to be as stated on the schematic. I did verify that the

Hi Ken, ? I have eight Tek. 549 Scopes. I had six and just?got two more in a lot of scopes I picked up. I also have a spare good used CRT + a new in the box CRT. ? I just finished up three Tek. 555

Thanks David, I saw the post but missed the logic on which was good and why. (as well as 2 of the links via "speed reading" I guess...sigh...).... Anyway, much appreciated.. I do not remember the ESR

Those wet slug tantalums are considered high reliability, wide temperature range, low noise, low leakage, and low impedance capacitors. They have higher ripple current ratings and lower impedance

Hello, Rob/Keith and the group-- If the tantalum capacitor were used in a timing circuit, I'd go with an exact replacement, but since it's used as a power-line filter, a modern electrolytic capacitor

So David- what are the practical differences between these types of caps that you mention? Echoing Rob's question here- especially in this case where this C505 is simply a supply cap, does it need

I mentioned a couple of replacements for this capacitor in my earlier post. The capacitor in this case is used for bulk power supply decoupling so low ESR and ESL is important while leakage is

Thanks Steve. I haven't yet seen the sections that address adjusting the lower ranges. Just glancing through the manual I feel I am not compentent or equipped to do much on this 7A13. If I'm not

Forgive me jumping into a post but the question is related and I know Keith so he won't mind.... (much).... When choosing a sub for the particular cap referenced here... Is a standard electrolytic

<brad.thompson@...> wrote:

There is a very recent thread comparing the 549 to the 564. Go back just a few days to read it. The 549 introduced a new type of phosphor for bistable storage that has much faster writing rate

I love my 7A13 vertical amplifiers. I have two of the new style that I rebuilt into working condition and two of the old style that I may someday combine into one working

Yes, There are other Balance tweeks for other ranges.

In addition to its logic diagram, you need to look at the circuit it is used in. Because Tek made ICs are single sourced, Tek engineers could rely on parameters that are typically "unspecified" as

<snip> Hello, Keith and the group-- That's a so-called "wet slug" tantalum capacitor. Its clear outer jacket is yellowed, likely due to overheating. IIRC, the electrolyte in the wet-slug capacitors