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Re: WTB: battery power pack for 422 scope.
Hi Jeff,
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That's what I thought. I like the case you selected too! Thanks, Ross -----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Jeff Davis Sent: Monday, June 06, 2022 4:39 PM To: [email protected] Subject: Re: [TekScopes] WTB: battery power pack for 422 scope. Hi Ross, I'd really like to take credit for the design, but it originated with someone else who agreed to license the design to me (I checked even though it had a Creative Commons license). I didn't use his case design. I instead modified a case design I found on Thingiverse. There's a great YouTube video about the charger - and a nice writeup at Tektronix 222 Battery Pack [Kitsune Denshi] (kitsune-denshi.net)<>. Jeff Tektronix 222 Battery Pack [Kitsune Denshi]<> For those of you interested in a multimedia audio-visual experience, there is a little overview video of the battery pack on youtube here.. If you would like to buy a ready-made replacement battery unit based on this design, N0DY Electronics is building and selling them here. kitsune-denshi.net []<> Tektronix 222 / 224 Li-Ion Battery Pack<> I made a battery pack for my Tek 222 which takes standard 18650 Li-Ion cells. It's slightly over the top, but designing and building it was good fun.More det... youtu.be ________________________________ From: [email protected] <[email protected]> on behalf of si_emi_01 <wellington@...> Sent: Monday, June 6, 2022 8:03 AM To: [email protected] <[email protected]>; ka2ivy@... <ka2ivy@...> Subject: Re: [TekScopes] WTB: battery power pack for 422 scope. Jeff, That was your design? I really like mine. It works well and is a very good product. Ross -----Original Message----- From: [email protected] <[email protected]> On Behalf Of Jeff Davis Sent: Sunday, June 05, 2022 7:09 AM To: [email protected]; ka2ivy@... Subject: Re: [TekScopes] WTB: battery power pack for 422 scope. Hi Bruce, I make a replacement battery pack for the 222 scope. It’s out of stock at the moment but I expect to be restocked this week. See it at ;data=05%7C01%7C%7Cf6d7f998b91d469f6a3d08da47cdc29b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637901246311487381%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=MEOyUdcngY5oEcGoPckL4IQaAZwAmToJsQ%2FMKtMzSjU%3D&reserved=0. It will also be back on eBay once I’m restocked. The battery pack lets you use standard 18650 lithium batteries in place of the original lead acid pack, which is no longer available. It requires no modification to the scope in any way, and fits in the original battery location. 73, Jeff/N0DY Sent from my iPhone On Jun 4, 2022, at 9:11 PM, greenboxmaven via groups.io <ka2ivy@...> wrote: |
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Tek 2335 arcing and bad trim pot
Hi All-
thanks to those that assisted with the WHY a 1% 5000pf in the Z axis circuit.( most likely it was what was most expedient in stock)...my solution is a 5100pf (3%) ordered 10 and chose one 5040pf...close enough! cap looks like it belongs there. replaced that and the series 1.6k...raster has returned and is working just fine with a couple of exceptions.... item one. Arcing- problem where the anode lead enters/attaches to the CRT the silicone covering has a gap allowing sparking to occur to the shield at that entry point hole. time was not kind to the silicone from the pressure of the HV lead pushing to one side solution so far remove CRT and shield, clean with alcohol...still arc. so I placed a piece of insulation between (over the edge of the) shield and entry point...so far a temporary fix. ran for an hour. only a couple of pops..whoo hoo! (which led to #2 during testing) So suggestions for a permanent fix?? more Silicone? ( generally it will not adhere to itself) this may have been part of the above cap failure- arckle sparkle is a no no.... there used to be a "play dough for high voltage" to assist in preventing coronas is that stuff still available? item two- does anyone have the specs on Beckman Helipot 82-4-2 ( specifically pin spacing and temp coef) this is R47 on the A10 board...looks like a PAIN to change.? 250K 10% 0.5W...I am looking at a Bourns 3339H as a replacement. what it does is something mechanical -touch it and channel 1 voltage pops back to correct displayed value on the CRT ( using 2v cal signal it drops 0.2V. consistent over multiple ranges.) ( btw- channel 2 is fine) I fidgeted with it and no matter the setting same unreliable issue...so it must go unless other solution prevails...possible solder issue but IF I take A10 board out i will replace it....are these trim pots a known failure item?.....I may change the small 'lytics too.? cute scope! more portable than my 465 or 475..... Thanks for the assistance. 搁别苍é别, K6FSB |
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Re: WTB: battery power pack for 422 scope.
Jeff Davis
Hi Ross,
I'd really like to take credit for the design, but it originated with someone else who agreed to license the design to me (I checked even though it had a Creative Commons license). I didn't use his case design. I instead modified a case design I found on Thingiverse. There's a great YouTube video about the charger - and a nice writeup at Tektronix 222 Battery Pack [Kitsune Denshi] (kitsune-denshi.net)<>. Jeff Tektronix 222 Battery Pack [Kitsune Denshi]<> For those of you interested in a multimedia audio-visual experience, there is a little overview video of the battery pack on youtube here.. If you would like to buy a ready-made replacement battery unit based on this design, N0DY Electronics is building and selling them here. kitsune-denshi.net []<> Tektronix 222 / 224 Li-Ion Battery Pack<> I made a battery pack for my Tek 222 which takes standard 18650 Li-Ion cells. It's slightly over the top, but designing and building it was good fun.More det... youtu.be ________________________________ From: [email protected] <[email protected]> on behalf of si_emi_01 <wellington@...> Sent: Monday, June 6, 2022 8:03 AM To: [email protected] <[email protected]>; ka2ivy@... <ka2ivy@...> Subject: Re: [TekScopes] WTB: battery power pack for 422 scope. Jeff, That was your design? I really like mine. It works well and is a very good product. Ross -----Original Message----- From: [email protected] <[email protected]> On Behalf Of Jeff Davis Sent: Sunday, June 05, 2022 7:09 AM To: [email protected]; ka2ivy@... Subject: Re: [TekScopes] WTB: battery power pack for 422 scope. Hi Bruce, I make a replacement battery pack for the 222 scope. It’s out of stock at the moment but I expect to be restocked this week. See it at ;data=05%7C01%7C%7Cf6d7f998b91d469f6a3d08da47cdc29b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637901246311487381%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=MEOyUdcngY5oEcGoPckL4IQaAZwAmToJsQ%2FMKtMzSjU%3D&reserved=0. It will also be back on eBay once I’m restocked. The battery pack lets you use standard 18650 lithium batteries in place of the original lead acid pack, which is no longer available. It requires no modification to the scope in any way, and fits in the original battery location. 73, Jeff/N0DY Sent from my iPhone On Jun 4, 2022, at 9:11 PM, greenboxmaven via groups.io <ka2ivy@...> wrote: |
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Re: 475 feet
I second that sentiment. I'd been thinking of various DIY options, but they would have involved work and the results would've looked less than professional. Jeff's 3D printed ones are terrific.
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--Tom -- Prof. Thomas H. Lee Allen Ctr., Rm. 205 350 Jane Stanford Way Stanford University Stanford, CA 94305-4070 On 6/6/2022 14:45, Jeff Dutky wrote:
I am a happy, repeat customer of Jeff's. His replacement feet for the 465/475 are excellent. |
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Re: 475 feet
I am a happy, repeat customer of Jeff's. His replacement feet for the 465/475 are excellent.
Before I found Jeff's 3D printed replacement cord-wrap feet I had been considering building my own from stacks of hard sheet rubber, held together by the securing screw, but the 3D printed feet are literally perfect. -- Jeff Dutky |
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Re: 475 feet
Jeff Davis
Hi Bob,
I make a set of replacement feet for the 475. They're 3D printed from ABS. They're available both on eBay (search for the part number: 348-0339-00) or on my website www.n0dy.com<>. Regards, Jeff []<> - N0DY Electronics<> Tektronix oscilloscopes and accessories, home automation devices www.n0dy.com ________________________________ From: [email protected] <[email protected]> on behalf of Bob Albert via groups.io <bob91343@...> Sent: Monday, June 6, 2022 10:58 AM To: [email protected] <[email protected]> Subject: [TekScopes] 475 feet I picked up a 475 at a swap meet Saturday. It needs some TLC and a new set of 4 feet. Does anyone have feet, or a recommendation where to get some? I'd be willing to cobble up something if I had an idea how. |
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Re: WTB: battery power pack for 422 scope.
I agree with Ross, I am very pleased with mine, works well great design.
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GaryF On Mon, Jun 6, 2022 at 11:03 AM si_emi_01 <wellington@...> wrote:
Jeff, |
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Re: WTB: battery power pack for 422 scope.
Jeff,
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That was your design? I really like mine. It works well and is a very good product. Ross -----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Jeff Davis Sent: Sunday, June 05, 2022 7:09 AM To: [email protected]; ka2ivy@... Subject: Re: [TekScopes] WTB: battery power pack for 422 scope. Hi Bruce, I make a replacement battery pack for the 222 scope. It’s out of stock at the moment but I expect to be restocked this week. See it at . It will also be back on eBay once I’m restocked. The battery pack lets you use standard 18650 lithium batteries in place of the original lead acid pack, which is no longer available. It requires no modification to the scope in any way, and fits in the original battery location. 73, Jeff/N0DY Sent from my iPhone On Jun 4, 2022, at 9:11 PM, greenboxmaven via groups.io <ka2ivy@...> wrote: |
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Re: 5103N - Access to LV PS board question
Good Day,
Harvey’s ?How To‘ description is correct.? And when you replace the electrolytic capacitors, make sure to watch for any connections via?the capacitor‘s lugs. I recall at least the 544x?series had them in its LV supply, so I had to use extra wire connections when replacing them with modern caps with only two terminals. There should be at least one series of photos in the gallery taken during a similar repair.? Good luck for your repair, Magnus |
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Re: 5103N - Access to LV PS board question
oh, that or
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"watch me fit *this* in there, they'll never get it out!" Designed to a price point, I bet. Harvey On 6/5/2022 6:29 PM, Harold Foster wrote:
They kept telling them "design *then* beer" but nobody listened. Wound up with a bunch of very smart, very lit engineers going "Hey y'all, watch this!" |
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Re: Dallas DS1225Y to Ramtron in 1780r
Mark,
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That sounds good. I'll keep trying to find my 'stash' of modules to see if I have a dedicated SOIC module. Let me know when you get the chip mounted on an adapter. If you'll cover postage both ways, there'll be no charge. Joe -----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Mark Vincent Sent: Sunday, June 05, 2022 5:41 PM To: [email protected] Subject: Re: [TekScopes] Dallas DS1225Y to Ramtron in 1780r Joe, The part you mentioned does not have pins. Getting the chip, soldering on an adapter board with pins I can do then send it to you to program. Mark |
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