Today I acquired...........

[DennisCA]

An autotransformer also known as a variac. Will be put behind an isolation transformer. I am builing a power supply that can give 0-230 volts AC and is current limited with bulbs for testing purposes. I also have a smaller step down transformer 220-110V (with a center tap for 55V) that I might incorporate with a bridge for some DC output at lower voltages.

 

[AKN]

An autotransformer also known as a variac. Will be put behind an isolation transformer. I am builing a power supply that can give 0-230 volts AC and is current limited with bulbs for testing purposes. I also have a smaller step down transformer 220-110V (with a center tap for 55V) that I might incorporate with a bridge for some DC output at lower voltages.

Nice. If you didn’t know transformer voltage ratios are quoted at full load so on light Load the voltage rises. Depending on the quality of your isolating transformer this rise can be quite big. I got caught on this using one without a variac mains in at 250V output 275V so I suggest a voltmeter on the isolating transformer output. Sorry if I’m teaching granny….

 

[slim_boy_fat]

An autotransformer also known as a variac. Will be put behind an isolation transformer. I am builing a power supply that can give 0-230 volts AC and is current limited with bulbs for testing purposes. I also have a smaller step down transformer 220-110V (with a center tap for 55V) that I might incorporate with a bridge for some DC output at lower voltages.

Looks very dangerous to me

 

[25.4_mechanic]

Looks very dangerous to me

Perfect!


Out of the workshop, spring is peeking through, with 20°C here - have a great Sunday everyone,

Carsten

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[Tinbasherdan]

An ex military 12x12 tent that I didn’t need, but was at the right price, and a 105mm shell casing

 

[My Old Landy]

An ex military 12x12 tent that I didn’t need, but was at the right price, and a 105mm shell casing

That sort of says you needed the 105 shell......

 

[Tinbasherdan]

That sort of says you needed the 105 shell......

Who doesn’t? Might come in handy

 

[slim_boy_fat]

Who doesn’t? Might come in handy

Aye, one day we'll all say "If only I had a 105 shell casing, I could...." .

 

[Tinbasherdan]

To be fair it’s more of the full thing than just a casing. Drill purpose and very much inert though!

 

[My Old Landy]

View attachment 339477
To be fair it’s more of the full thing than just a casing. Drill purpose and very much inert though!

Drat, now I NEED one

 

[slim_boy_fat]

Wait until @MattF sees this......

 

[Tinbasherdan]

Drat, now I NEED one

There’s quite a few of the cases left, if anyone is seriously interested pm me and I can enquire for you

 

[Pete.]

Drat, now I NEED one

I know where there's loads....

 

[Farside]

Well, there's a result.
My old Mamiya 645 was suffering from a grungy decaying foam backing that was attacking the prism. I spied a better prism on ffordes that was listed as being defective (an AE prism) with inaccurate shutter speeds. Bargain at £29, and I thought I might be able to fix the meter, but even if I couldn't the bare prism was much clearer than my old one.
It arrived a couple of days ago and today I fitted it. I noticed the meter was moving, so comparing it with a light meter and a dSLR it's actually pretty reasonably accurate. Bonus - it interfaces with the 645 electronically-controlled shutter and fires it properly at the speed it needs.
Nothing wrong with it at all. I reckon ffordes messed up and wrongly listed this one. It would be worth at least twice what I paid, if not thrice, being fully working.
Only drawback is the oh-so-tasteful lizard skin finish, but that's easily remedied.

 

[slim_boy_fat]

^^ That IS a bargain! I've dealt with them (they're not far from me) and found them very good to deal with.

 

[Kram]

https://www.amazon.co.uk/gp/product/B000LFXY1G/

£4 delivered, fine grit bench grinder wheel. Ordered late yesterday and arrived a few hours ago, not well packed but rings true.

 

[Moose McAlpine]

View attachment 339477
To be fair it’s more of the full thing than just a casing. Drill purpose and very much inert though!

There was a guy in the news a while ago, had some big artillery shell as a doorstop. Turned out it was live.

 

[Tinbasherdan]

There was a guy in the news a while ago, had some big artillery shell as a doorstop. Turned out it was live.

Got a few stories like that but not for public forums! This one is very definitely drill purpose inert

 

[dobbslc]

More wood!
My wife has a friend on Facebook called Kurtis that does trees for a living and he's just dropped this lot on my front lawn!

At this rate @8ob will be worried I'm taking money out his pockets!

 

[slim_boy_fat]

At this rate @8ob will be worried I'm taking money out his pockets!

Hardy likely, as he seems to give loads away, free gratis &nor nowt.