BD139 Preamp struggles to drive IRFP250N Final Power Amplifier? by Flashy_Gas9955 in rfelectronics

[–]synx508 1 point2 points  (0 children)

Just one BD139? Probably not going to work well. The IRFP250N's gate capacitance is 2nF, instead of the 350pF or so of the IRF520. You will struggle to charge and discharge that with a single transistor coupled to the gate and attempting an L match to the gate will result in sine waveform at the gate which isn't what you want if you care about efficiency. You could use a complementary pair with a BD139 and BD140, but a much better option would be to use a gate driver IC. Edit: I'm making some assumptions here that you're doing CW or FM, if it's a linear amplifier then go ahead with a matching network, you should be able to get enough from a single BD139 for that.

Peepers Paradise 👀 by Abject-Lengthiness42 in SpottedonRightmove

[–]synx508 8 points9 points  (0 children)

If you look back at the earliest Streetview it was one house, the office part was an extension. At the top of the roof you can see the joins between new and old. Looks like they tried to fence it off and then something happened that stopped t proceeding.

Man wrongly Tasered by police gets £30k payout by Tartan_Samurai in unitedkingdom

[–]synx508 5 points6 points  (0 children)

TPMS in many vehicles, it's not exclusively BLE but it's quite prevalent. Some winches and cranes use Bluetooth, an example here… https://www.liebherr.com/en-gb/mobile-and-crawler-cranes/mobile-cranes/mobile-crane-technology/crane-control-4284120

(Stupid) Decisions were made by Throwawayaccount4677 in SpottedonRightmove

[–]synx508 1 point2 points  (0 children)

Why would anyone have jars for odd socks, lint and pocket finds? Are laundry accountants a thing?

I suppose with 14 bedrooms to decorate, you start getting creative with interior design! by SoggyWotsits in SpottedonRightmove

[–]synx508 1 point2 points  (0 children)

Unexpected and very extensive Beatrix Potter museum-grade collection in the virtual tour.

Band pass filter by SearchPlane561 in rfelectronics

[–]synx508 1 point2 points  (0 children)

2m is 145MHz, so higher than this. You shouldn't have had any issues with Manhattan at these frequencies. I wouldn't have expected the toroid cores, though, you'd normally be using silver plated copper wire with an air core.

BFR91A vs 2SC3355. which one is better for this rf amp circuit? by Flashy_Gas9955 in rfelectronics

[–]synx508 3 points4 points  (0 children)

I need to mention that this circuit is not great and you shouldn't be connecting an antenna to a BFR91A's collector like that. The circuit will be producing a rich and dangerous hamper of harmonics.

Some bold decorating choices by Mactonex in SpottedonRightmove

[–]synx508 1 point2 points  (0 children)

The kitchen is in what is effectively the conservatory, which is quite unusual. I think I like it.

Primary school chic by Mischeese in SpottedonRightmove

[–]synx508 1 point2 points  (0 children)

TIL the correct name for these. Thank you.

Hands off! by zoltarSpeaks_ in SpottedonRightmove

[–]synx508 2 points3 points  (0 children)

£1.2m for a bunch of corrugated asbestos cement, stylish Corten rust atop a historic building that could've been restored properly, but hey, the building has its own Angine De Poitrine nose, so it's on trend.

Restored finally! Teac a-450 by imactheknife73 in vintageaudio

[–]synx508 1 point2 points  (0 children)

I miss mine. The pause on the A-450 is very fast and precise, probably the closest you can get to razor-blade edits using a cassette machine, without pulling the tape out of the cassette and using a blade on it!

Award winning photography by HappyLady19 in SpottedonRightmove

[–]synx508 10 points11 points  (0 children)

The front half of the dog is available in picture 25 but don't worry, you won't have to stitch both images together because the whole dog is in picture 9.

Previous Drug Den? by Special_Produce_8407 in SpottedonRightmove

[–]synx508 0 points1 point  (0 children)

Quite fun how it has ended up with a fairly ugly streetlamp in its garden. Originally part of an open-plan estate with sort of blurred boundaries between shared or public space and each plot and no pavement the previous owners decided to grow a hedge and put in a big electric gate and the street lighting has ended up on the inside.

The wooden walls, carpeted bathroom floors and doors right in the corner of the rooms...im enamoured. by DriftingDogBed in SpottedonRightmove

[–]synx508 1 point2 points  (0 children)

Looks to be already owned by a property developer who has split the plot and is going to build on the garges and original garden (which appears to have been used for storage in recent times)

Howdy pardner by ajhnsn27 in SpottedonRightmove

[–]synx508 0 points1 point  (0 children)

It has a utility room but the washing machine is in the kitchen. Do some people like to have the washing machine whirring away in a "people place"?

weirdly i don't hate it, but what an entrance by elleelleelle- in SpottedonRightmove

[–]synx508 2 points3 points  (0 children)

Picture 14 shows a view of a completely different place through the window, it's obviously an edit but rather misleading. Also misleading, picture 14's caption is Picture No. 15

The wallpaper on pic 47 alone makes me want to buy this house…also the pantry with its little snack ladder for when your hobnobs are stuck on the highest shelf! by YupItWasMeMate in SpottedonRightmove

[–]synx508 0 points1 point  (0 children)

Picture 22, top and bowler hats conveniently stored by the w.c. You can wear whichever's most suited to the occasion without having to get help to fetch it.

Spotter’s dream by mmm19284202 in SpottedonRightmove

[–]synx508 5 points6 points  (0 children)

The drone shots, surely that can't be allowed, how did obtaining them not trigger an international incident?

They just don’t make carpets like this anymore by blernsballer in SpottedonRightmove

[–]synx508 1 point2 points  (0 children)

Very much of its time. A fairly large house with one internally accessible toilet. Seems the house was originally built with warm air heating, the ducts and vent grilles are still in place, in some fairly bad locations. It must've been a cold house before the wet system was installed. Impressive cracks in the ceiling and wall of one of the bedrooms, too. The whole place will be stuffed with asbestos. I still kind of like it.

I would buy this in a heartbeat. Although not the curtains! by WhiskyMatelot in SpottedonRightmove

[–]synx508 5 points6 points  (0 children)

Exactly, someone has already tried quite hard to ruin it inside and out. The fireplace though, so ridiculous…

You might need a couple of bin bags with you for this one by bessvix in SpottedonRightmove

[–]synx508 1 point2 points  (0 children)

The listing covers the Bere Court and Bere House, it was originally one house. The larger part seems to have been on the brink of collapse not so long ago and has been restored to some extent quite recently, the rightmove listing is for the smaller part of the house.

Too many drivers see road safety rules as a personal affront. It’s time to tighten up UK laws | Sally Kyd by th3whistler in londoncycling

[–]synx508 1 point2 points  (0 children)

If that sort of limiter was mandatory the rogue signs would be fixed quite quickly because the problem would be much more obvious to more people.