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I installed one of the NewScope kits on a TDS 784A, and it's very pretty. My 694C has a beautiful bright display still--it's a Frankenscope cobbled together from an early unit that was used internally

Send it to me off list, I will help you all I can. Bruce

It really doesn't matter. Because both the field, and the armature change polarity, when you change supply polarity, the motor will continue to spin the same direction. Back in the days of yor, when

Hi Bruce, thanks for the input! If I sent you a photo of the schematic off list, could you make an educated guess (or perhaps see something I've missed?).? I've read schematics since my Radio Shack

http://simmconnlabscom.ipage.com/store/page5.html The downside is that you may feel compelled to kick yourself for not ditching the CRT earlier. Also, no more trippy head spinning when your gaze

Hi Stan. Good to hear from you. Hope all is well. I really miss your old website as I used it pretty much daily for information, especially for crt cross reference. Any chance that info is still

I have fixed a lot of this family of supplies, and never had the luxury of a schematic. One really isn't necessary... sometimes it just adds confusion. Most of the problems are simple, and the result

In my 30 plus years in the elevator craft, I have never seen or heard of any standard of L1 and L2, and I have worked on many DC motor starter/reverser panels. Different manufacturers used whatever

I ran into the same issue. So I replaced the pull out cable with an insulated BNC female, chassis mount connector: https://www.vellemanusa.com/products/view/?id=351312 Shaun M.

Need not be working, project units are more interesting, I have some units that are available if interested in the 222 series. Contact me off list if intrested in more details at

On the schematics pertaining to DC shunt/series motor starters, is there any naming convention relating to L1 and L2 being positive/negative?? I ask because I'm used to DC systems specifying

I am looking for Tektronix hand held scopes with CRTs, such as the 222, 224, 211, 213, 214 and others of those series. Need not be working, project units are more interesting, completeness is more

Chuck ,Sorry to disagree with you, have you even taken the time to look at the schematic, In principle yesI agree with you but this supply is different than what you? described.? It uses a multitap

Hi, all, My favourite scope, a TDS 694C, has developed a nasty screeching sound when the display comes on. It's quiet during boot-up, but when the screen comes on the sound is very loud and

Hi Colin, Those 7CT1N captive leads are problematic. I've fixed several 7CT1Ns and they almost all had bad cables. By now most of insulation on the cables has gotten brittle and is cracking. The plug

If I had that need abd that concern, I’d mill some wooden blocks to temporarity replace the feet and store the original feet away. DaveD Sent from a small flat thingy

Hi All! I've got a bare 7704 frame that's in the way, and I'd like to reposition it from the vertical, to the horizonal, to store it.... "upending" it, so to speak. I'm a little leary of doing it...

https://www.youtube.com/watch?v=J0TjW_0xTJU, here is a good informative video on capacitors if anyone is interested Thank you Chuck for the reply, I am trying to avoid electrolytic capacitors when

I just took apart the HV XFMR from my 561. The core is a ferrite or powdered iron E-E type. After removing the wrap around the core, the two E's separated easily at room temperature. Still hoping

There appears to be two variants of this captive lead. The picture in my manual shows an in-line white plastic "plug", as does Tekwiki. It is given as p/n 195-0095-00 "Lead, test: BNC" and the manual