A transformer arrived (input 220V) (output1: 110V) (output2: 230V) I connected a power extender and connected my microscope to it (Nikon Optiphot) but didn't realize it was the wrong output (230V instead of 110V). It turned on for maybe 1 or 2 seconds and then it turned off. I realized the mistake, unplugged it and changed the fuse (previous fuse broke). Now I try to connect it but only the power indicator starts glowing, the actual lamp doesn't. I have connected it properly before so I know it's supposed to work.
I opened the microscope to see if any part got burned, but I can't see any damage. Has anyone made a mistake like this and know what could have gone wrong?
Connected a 110V microscope to 230V
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apochronaut
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Re: Connected a 110V microscope to 230V
I know this a smart ass question but you did check the bulb filament did you not? You did not mention that.
Just a bit of explanation required. This is a power converter you have that can output either 110 or 220 and you have plugged the 110v. plug from your microscope into it when set for 220v. correct? The actual internal microscope power supply outputs 6v.?
Have I got this straight?
Just a bit of explanation required. This is a power converter you have that can output either 110 or 220 and you have plugged the 110v. plug from your microscope into it when set for 220v. correct? The actual internal microscope power supply outputs 6v.?
Have I got this straight?
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blekenbleu
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Re: Connected a 110V microscope to 230V
Optiphot lamp is 50W 12V; Labophot is 20W 6V.apochronaut wrote: ↑Wed Jun 21, 2023 10:33 pmThe actual internal microscope power supply outputs 6v.?
Metaphot, Optiphot 1, 66; AO 10, 120, EPIStar, Cycloptic
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apochronaut
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Re: Connected a 110V microscope to 230V
or maybe 24 v.
Re: Connected a 110V microscope to 230V
Optiphot halogen lamp is indeed 12V 50W - re-verified with the Manual
Optiphot 2 halogen lamp is indeed 12V 100W - re-verified with the Manual
Optiphot 2 halogen lamp is indeed 12V 100W - re-verified with the Manual
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apochronaut
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Re: Connected a 110V microscope to 230V
24 v,. or something not right if you input 220!
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Phill Brown
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Re: Connected a 110V microscope to 230V
Why 24v?
The lamp is 12v.
Putting 240v AC in the 110 setting has resulted in 0v output at the socket?
Sadly what I would expect.
Is there a fuse on the PCB?
A good old school electrical engineer might be able to fault find what gave up first but it could cascade into multiple failures in a few seconds.
The smallest transistor would be my first guess.
Followed by an op amp regulator.
Output transistors should outlive the bulb but it would have been a very bright flash with the inrush current.
Very bad day at the bench.