Eseco Speedmaster A50

Bill Burk · May 30, 2021

Arrived quickly, but my daughter tells me I must report the poor packing. I don’t want to because the darn thing works! Soon as I replaced the cord and confirmed no short I plugged it in and all the lights came on and the sensor responds to light.

Serious smoke residue (probably a fire salvage), but that’s all cleaned up and ready to put back together.

Working on grounding now.

Kino · May 30, 2021

Nice! Cleaned up fine! Keep us informed!

gone · May 30, 2021

Any landing is a good landing in the parcel delivery game.

Bill Burk · May 30, 2021

Inside the front. That big aluminum can is the “sensitivity adjustment. I don’t know if it’s all potentiometer or a smaller one in a big shield.

All the electronics are “floating”. There’s nothing inside touching case ground. But the case is grounded now, ground reaches the probe as well.

Kino · May 30, 2021

That's great! Reminds me of a friend's story; His father was working on an old 1960's TV, powered up and with the back off. He touched something that he shouldn't have and was blown back about 3 feet. When my friend reached his father, his quote was, "Son, I taste Copper".

Good idea on the ground...

Bill Burk · May 31, 2021

Here’s what the light detector looks like. Photomultiplier tube (PMT). There is a labyrinth behind the grid. These “dynyodes” amplify the light as it goes through .

mshchem · May 31, 2021

SO COOL, LOOKING FORWARD TO UPDATES MORE PHOTOS.

Eseco had an amazing system, I've never used but looks amazing. Everything tied together. I have a roll paper easel from these guys.

Chan Tran · May 31, 2021

I don't see where they get the high voltage. I think PMT needs 1000VDC to work.

ic-racer · May 31, 2021

RCA Photomultiplier Handbook; answers all one's PMT questions...

http://www.decadecounter.com/vta/pdf/RCAPMT.pdf

Eseco Speedmaster A50

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