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Aaron; I believe you may be looking at a "W" with the front-end mod kit installed. I have several "W"s and an NIB mod kit. Will have to go diggin' though... Bernd Schroder

Hi there, I'm looking for a creative engineer/writer/community leader with some hands-on 'scope experience to run an online community focused on the use and application of that most critical of

Friend worked on the F16, Fly-By-Wire control system and computer. It is an Analog Computer. Turns out, digits were simply not fast enough and powerful (number crunching) enough to deal with the real

Oh my, I see another long discussion starting :). I think that when a high ESR is seen, most of the time, the capacitance falls. At least that is my observation. But also, the power dissipated is

In the Navy in '65 I was treated to a visit inside an F4 Phantom simulator trailor. That was one big analog electromechanical maise on wheels. Analog computers laid the ground work for digital to take

Hello Tom, You are right, high ESR will have high ripple. But heat on cap = (V ripple rms)* (V ripple rms) / ESR (V ripple rms) depends on the capacitance. Higher capacitance --> less ripple Without

Hello Tan, You say: "The filtering caps are also warm (quite hot) which means that it is filtering the ripple and converting to heat. It's not an indication of good ESR though but poor ESR will have

Hi David, The start and stop levels should differ about 5 V. With start I (and you also I think) actually mean the stop level when the trace is at the left position. On the test scope you look at

Thanks Tom, I will download it. You are right, the Q9070 is on the heatsink. I was referring to the U930 driving via Q908 (and CR908) to reach Q9070. Noted on the connection to be broken for direct

I wish I can use this approach but unfortunately it cannot be used in this case because place that are heating up ought to heat up but it may be heating up slightly more than usual. This approach is

Ed, Thank you for your extensive reply. 2220 is a storage 60mHz 2235 is a 100Mhz Non-storage The power supply of the 2220 is quite similar to the 2235 which I can see from the layout. These are some

Qservice is another good source, their pricing is less than Sphere and order fulfillment is very fast. <http://www.qservice.tv/vpasp/shopcontent.asp?type=2445> Patrick Wong AK6C

A weak CRT can cause this also. ________________________________ To: TekScopes@... Sent: Saturday, January 21, 2012 6:14 PM Subject: [TekScopes] focus/astig off the center. ? Hi, I have

They come up on fleabay for 4/$15 every so often. There's always Sphere, if you want to pay $15/each! If I could get that much I'd be buying up 2445s on ebay just for the knob caps. --Victor

I've become a firm believer in the freeze mist. It really helped me recently find a problem transistor in a 7A13 plugin I have. Oh, and a relatively cheap IR thermometer with a laser dot pointer that

They have heard of analog computers, sort of, but they're treated like the redheaded stepchild. There are a few analog machines on display near the entrance of the exhibit hall (and there are a few

Hi, Am looking for 3 or 4 knobs for the lower front intensity, focus, readout intensity and scale illumination controls for my 2445A. Tek part number is 366-2041-03. Anyone have any spares I can buy?

I recently acquired several 8416 tubes and decided to revive my two Type W plugins. As soon as I started working on them, several discrepancies between the manual and reality became apparent. Most

I also note at least one transcription error!! The Start V for .5nS in the second half should of course be 90mV. Very well spotted on the systematic nature of the offset BTW. I'd been banging my head

Albert, Thanks - you are right there are some calculation errors there - all my fault - no hardware to blame - apart from the grey mushy sort between my ears! Thinking rather more about this, the