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Questions & Answers
YUKON NVMT 3 ( 4X 50 )
'it does not have objective lens'?! Yes, it could be the reason why you cannot see anything. Your NVMT should have a lens in both ends. It's just a regular telescope with some extra features.
on Oct 24, 2009
The yukon NVMT 4 was turned ON and then flashed.
The scope may flicker or flash when used in a bright environment. To fix this you should only use a NVMT in a dark. It will restore itself in a few minutes or hours, depending on how long it has been exposed to light.
It may also flicker for the first several seconds of use in dark, before the device corrects itself.
With a severe exposure to bright light for prolonged time the light enhancing unit may damage beyond repair.
on Oct 24, 2009
Yukon 2.5 x50 nvrs tactical
Hello, don't worry about it. It is HV to the image intensifier tube. The battery
voltage goes through control circuit then to ccfl inverter (here is were dc
voltage is switch on and off and switch dc voltage is step up by toroid coil
that has two input and only two out puts). By impulsing the coil with two
different switch dc voltage on the input this make the current lag the two
different phase voltage by 90 degrees. Here is where the strange noise is coming
from. The toroid coil is encased in iron case and if half of this iron case is
loose, it makes case vibrate so the noise.
Now, the voltage come out of the toroid coil is switching dc (one could call
it AC because that what AC voltage is, it switch between positive to negative)
this voltage is about 300 to 900 switching DC voltage. This voltage will be
applied to a 1/2 wave voltage multiplier (this voltage multiplier with have
anywhere four four stages to 10 stages depend on what the input voltage to
Low the voltage out of the ccfl inverter the more stages the multiplier will
Now, the voltage multiplier will double the voltage per stage to need image
intensifier tube voltage of 12000 to 45000 volts---DC switching or AC what ever
one wants to call it. This voltage will bit you but it doesn't have a lot
current associated with it, the current would be in the 10 to 15 ua (micro-amps)
Now, you know. GB...stewbison
on Sep 24, 2011
We just got a 78-9676 telescope with no manual we tried to use it but things appear upside down we must not have something set up right help
You have not stated the make of this telescope, but from your description, it appears you have an astronomical telescope (for star-gazing). These scopes generally omit the correction lens in the optical path that inverts the image for terrestrial use. This is because light-gathering power is more important than orientation - after all, there is no 'up or down' in space.
It may be possible to obtain an additional correction lens - check with the manufacturer or seller. If this was not pointed out when you made the purchase, you may be entitled to a refund. Otherwise, just enjoy the Heavens.
on Jul 20, 2020
How do I save weavers?
Hello, Tanvi -
1. Your question landed in the Fixya category for optics. "Optics" has to do with sight. I doubt that is the correct category for the question.
2. Please explain what "weavers" you are asking about and where (what country.) Are you referring the issue of suicides in the cloth weaving industry in India?
Note: Fixya.com receives questions from people worldwide. Those of us who volunteer to answer on Fixya are not mind readers and cannot guess what is meant by a question without more details.
3. You can add more information regarding your question by choosing Comment and typing added details.
on Jun 11, 2020
Trying to figure out how old my Whirlpool washer is?
Trying to figure out how old my Whirlpool washer is Locate your machine's nameplate, which contains both the model and serial numbers. On top-loading Whirlpool washing machines, open the lid and look for the tag at the top rear of the tub. On front-loading washers, the tag is usually inside the door or near the bottom of the left or right side of the cabinet. If the tag is not in one of those places, pull the machine away from the wall and check the rear. Record the serial number with a pencil and paper or take a photograph. Be sure to record the serial number, not the model number. Decode the serial number at an online source like Appliance Cafe or Appliance 411 (links in Resources). Whirlpool serial numbers include a code in the second character for the year the product was built. Before 1990, the character was a number; from 1990 to 2010 the character was a letter. The number sequence started over in 2011.
on May 13, 2020
I bought 2 outdoor CCTV.camera RV537B with night
I think I answer you question--when?? Take the good CCTV camera and hook it up to
monitor. Then hook up the CCTV camera and turn it on. Point the working CCTV
camera at the bad camera that is turn on. Now, look at the monitor which is
working with your operational camera. Look at the bad camera while it on, and
see how many IR LED's you can see on the bad CCTV, while it turn on. You should
be able to the IR LED glowing red. If not, then there is a problem with bad CCTV
IR LED's. Short wire, no power to the IR LED's. stewbison
on Feb 20, 2020
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