This is a beautiful combo
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pucho812
Well-known member
pucho812
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Brian Roth
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Mounting mechanical meters at an angle might through off the accuracy. I learned that eons ago when using a (cheap Radio Shack) VOM as I watched different readings if the VOM was upright or on its side.
Hmmmmmm....not right now, but I have a very nice old Simpson VOM and will see what differences come up with it vertical or on its side.
But those are great pix!
Bri
Hmmmmmm....not right now, but I have a very nice old Simpson VOM and will see what differences come up with it vertical or on its side.
But those are great pix!
Bri
Steam punk?
JR
JR
Gorgeous
Bo Deadly
Well-known member
Mmm. Using a variac for a variable bench supply is a good idea. I always thought of it as something to sanity test new builds with and work-around gear hardwired for different voltages like 100VAC stuff from Japan. Don't know why I didn't think of that before. And since the variac is not isolated and you need a transformer anyway, then you easily get a bipolar supply by just using a center tapped secondary. But I wonder if this is just using capacitance multipliers or if it's using a special regulator circuit that uses a variable voltage reference sourced from the output of the variac or something?
I have an old and not as pretty variac under my computer desk right now. The main thing I've used it for this century is to provide power to flash program battery powered circuit boards from a wall wart dialed in to make the correct voltage.
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Back in the day for troubleshooting power amp prototypes we'd use a variac, with an incandescent light bulb current limiter in series. If/when the amp powers up without releasing smoke the light bulb could be bypassed.
JR
===
Back in the day for troubleshooting power amp prototypes we'd use a variac, with an incandescent light bulb current limiter in series. If/when the amp powers up without releasing smoke the light bulb could be bypassed.
JR
pucho812
Well-known member
Brian Roth said:
I would agree, but it does look like a piece of art
Brian Roth said:
There are stern warnings in the Dolby A manual to avoid parallax when calibrating the units. One of the downsides to using giant VU meters is that parallax becomes an issue. With the giant Weston's I'm using you can see a 0.1dB movement around 0VU.
Scodiddly
Well-known member
JohnRoberts said:
More of a dieselpunk look, I would say. Chrome and bakelite instead of brass.
Probably wouldn't be easy to stack my o-scope on top of that, but I'd make room for it on my bench. Beautiful build.
