Search found 148 matches

by Robert
Sat Jun 03, 2023 7:23 am
Forum: Test Equipment
Topic: Drive a Hybrid, an EV or an ICE car with ACC, better watch this
Replies: 11
Views: 1094

Re: Drive a Hybrid, an EV or an ICE car with ACC, better watch this

AVGresponding beat me to it. My plug in hybrid has regenerative braking that operates when you lift off the throttle as well as when you press the brake pedal. The level of lift-off regenerative braking is driver selectable using paddles on the steering wheel. At the higher levels of regenerative br...
by Robert
Wed May 31, 2023 5:48 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 2767
Views: 218332

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

Almost certainly a custom made unit. The box is a Greeenpar modular one. Removing one screw, furthest from the longitudinal joint lines and the side connectors, should allow the cover to come off. You might have to loosen the other three slightly. Can't even guess function without a internal picture...
by Robert
Mon May 29, 2023 7:54 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 2767
Views: 218332

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

Update on the Pultra lathe. It's a bit of a hybrid. The tailstock from a earlier P type like the bed. The tailstock is lever operated and seized solid. "4 hours in penetrating fluid did not allow any movement by hand. A bit of heat from a hot air gun and some careful tapping with a soft block a...
by Robert
Tue May 23, 2023 3:55 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 2767
Views: 218332

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

The Pultra I got isn't as tidy as that one. I've fancied one (or a Schaublin) for years. Didn't think I'd get one for £40. I've already got a possible line on a cross slide. Looks like mine is a bit of a hybrid. It has an earlier bed probably a P type and a 1750 headstock. Not an issue, it was a fe...
by Robert
Mon May 22, 2023 6:25 am
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 2767
Views: 218332

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

The Pultra I got isn't as tidy as that one. I've fancied one (or a Schaublin) for years. Didn't think I'd get one for £40. I've already got a possible line on a cross slide. Looks like mine is a bit of a hybrid. It has an earlier bed probably a P type and a 1750 headstock. Not an issue, it was a fea...
by Robert
Sun May 21, 2023 6:25 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 2767
Views: 218332

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

I went to the Dunstable Downs amateur radio car boot sale today. As usual I was looking for TE but came back with mostly mechanical engineering bits. :o Find of the day was a Pultra precision lathe. I think it's a 1750 but have to check. Certainly 50mm center height. These are small machines, I can ...
by Robert
Sat May 20, 2023 12:40 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 2767
Views: 218332

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

This muppet, mjtronix who according to his ebay listings breaks up working test equipment has now stooped to breaking the edge connectors off and stripping tantalums and TO100 ICs from PCBs before trying to sell them on ebay :x
https://www.ebay.co.uk/itm/115809887346?
by Robert
Fri May 19, 2023 11:51 am
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 2767
Views: 218332

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

tggzzz wrote: Fri May 19, 2023 9:01 am
bd139 wrote: Fri May 19, 2023 7:52 am Sticking my head in for a quick catch up. Laptops, dead TE, comments about the popululation of the Fens and no one dead. All good! :lol:
Zenith and I expect to be at Dunstable Downs RC boot sale on Sunday. Looks like good weather, so see you there 8-)
Me Too
by Robert
Fri May 19, 2023 11:42 am
Forum: Test Equipment
Topic: ULEZ London
Replies: 241
Views: 27836

Re: ULEZ London

How the hell did this get onto cell phones and deaf people? I finally had a hearing test a couple of mont's ago. As suspected my high frequeny response is shot (1kHz is 6dB down higher frequencies 30-40dB). So I now have hearing aids. At SWMBO's insitance I got the fancy ones with bluetooth. As well...
by Robert
Sun May 07, 2023 9:48 am
Forum: Test Equipment
Topic: New Car
Replies: 20
Views: 1587

Re: New Car

DRL's are front only without rear during the day for good physiological reasons. In daylight conditions the PERCEIVED difference in brightness between rear lights and brake lights is much lower than at night. This running with rear lights on in daylight increases the reaction time of following brive...
by Robert
Sat Apr 29, 2023 2:12 pm
Forum: Test Equipment
Topic: Time nuttery in distributed application.
Replies: 19
Views: 3051

Re: Time nuttery in distributed application.

Always nice to see a wandering trace snap into sync as a Rb locks :geek:

Just be careful about lighning protection. I know of one case where a GPSDO was connected to a rack of expensive equipment and it took the lot out when the antenna took a direct attachment.
by Robert
Mon Apr 03, 2023 8:47 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 2767
Views: 218332

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

Not TE directly but I went to look at a PDF manual yesterday and could not access my NAS drive. It's a WD and I found out today that WD have been hacked and shut down their servers. The frustration is I can't access MY LOCAL drive without WD's systems being up. Nothing about that in the instructions...
by Robert
Sun Mar 26, 2023 9:49 am
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 2767
Views: 218332

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

Where I have trouble with packing TE is the logistics of boxes for 19" rack size equipment. The correct size box for say 3 or 4U is not easily available so you have to cut a bigger box down in height and have excess space. Even then the minimum pack size at a sensible price is 5. Even then they...
by Robert
Sat Mar 25, 2023 11:12 am
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 2767
Views: 218332

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

The WOW screwdriver offer (I only got $2 coupon) comes to £28 (~$35) shipped and tax paid to the UK. I don't do enough work with that size screw to make it worthwhile to me. However the UK price for the same drivr is £45 so still worth shipping from the USA if you want one.
by Robert
Tue Mar 14, 2023 12:59 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 2767
Views: 218332

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

Thanks for the Python opinions.
Just wanted to check I wasn't whinging without reason.
by Robert
Tue Mar 14, 2023 7:56 am
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 2767
Views: 218332

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

Sorry wasn't clear. Building a partially hardware commercial item and using Python running on some kind of *inux OS on SBC to control HW. Also doing mission critical software tasks with Python. Not low cost. I'm on the fence with that if I'm honest. Python can be used to make reliable software but ...
by Robert
Mon Mar 13, 2023 9:04 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 2767
Views: 218332

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

Sorry wasn't clear. Building a partially hardware commercial item and using Python running on some kind of *inux OS on SBC to control HW. Also doing mission critical software tasks with Python.
Not low cost.
by Robert
Mon Mar 13, 2023 5:47 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 2767
Views: 218332

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

Talking of software, what is the collective view of using Python for controlling hardware for commercial products?
by Robert
Mon Mar 13, 2023 5:44 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 2767
Views: 218332

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

I've done that. The biotech instrument comany sent me on some lab courses. You use a virus to intoduce the the relevant strand of DNA into the eColi. Mine worked. Normally you ony do it for a antibiotic that isn't used on humans and a strain of eColi that isn't virulent. You then use the eColi to mu...
by Robert
Sun Mar 05, 2023 7:50 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 2767
Views: 218332

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

Must stop looking at ebay when I'm bored. Just blew £25 on a AVO 8. It's in a NATO case but looks like a mark 5.
And £16 on a 19mm 13in-lb torque wrench (for precision N types to go with my HP 20mm one).
The wrench was the better buy I think.

Robert.
by Robert
Fri Mar 03, 2023 12:19 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 2767
Views: 218332

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

Zenith said "I've stayed with friends and been asked to fix something. I said a multimeter would be necessary and a soldering iron would probably be needed. I may as well have asked for a magic wand and book of spells. How can civilised life possibly exist without these basic necessities? They ...
by Robert
Sun Feb 19, 2023 9:25 pm
Forum: Test Equipment
Topic: Fluke recall some 8xV series meter amid possible shock risks
Replies: 8
Views: 953

Re: Fluke recall some 8xV series meter amid possible shock risks

Compared to the frequency of open circuit test leads I'd say this is down in the noise as a risk. Reflects well on Fluke to address it though. A lead continuity test would pick it up and should be essential before any critical use. When I use any meter to verify a dead circuit I check it on a known ...
by Robert
Sat Feb 18, 2023 9:02 pm
Forum: Test Equipment
Topic: Fluke Friday - Going through the Fluke Collection
Replies: 155
Views: 25057

Re: Fluke Friday - Going through the Fluke Collection

If a diode has gone short it is just as likely a diode failed first and blew the cap.
Very hard to tell.
by Robert
Sat Feb 18, 2023 10:21 am
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 2767
Views: 218332

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

I'd be very surprised if the transformer winding for the 5V output was more than 9V RMS so a 16V capacitor is reasonable. It has 20% "headroom". That said, with the size of modern electrolytics A 25V one will probably be a better match physically. Next rating up on voltage is seldom a prob...
by Robert
Thu Feb 16, 2023 9:22 am
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 2767
Views: 218332

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

On my microscopes, the distance, X, between the objective lens and the subject can't vary very much. The position between internal lenses is fixed and the objective lens is moved to X, i.e. being in focus. Correct. Conventional microscopes are fixed focus. you have to move either the object or the ...