Welch Allyn TN04900 04900 3.5V 0.72A Direct Ophthalmoscope Bulb

►Quick Detail:

Welch Allyn TN04900 04900 3.5V 0.72A Direct Ophthalmoscope Bulb

When you browse through the bulb, it indicates that you have a need to replace the bulb of that model.
If you feel that the current light bulb of the instrument cannot meet your needs, please use specialized power supplies, ammeters, and voltmeters to test the current and power of the light bulb at different voltages. At rated voltage, the light bulb should be able to emit light normally and the current and power should meet the specified values. If a slight fluctuation in voltage causes a significant change in current or the light bulb cannot emit light properly, it indicates poor quality of the light bulb.

You can also turn on the light bulb in a dark environment and observe if its brightness is sufficient. A photometer can be used to accurately measure its light intensity. For checking the light bulb of glasses, sufficient brightness is required so that doctors can clearly observe the internal structure of the eye. If the brightness is significantly lower than the standard brightness of qualified products of the same type, it may be a quality issue with the light bulb.

►NOTES :

If your eye light bulb has been working continuously for too long, you can observe whether the bulb will suddenly turn off or the brightness gradually decrease according to the continuous working time specified in the product manual or for a longer period of time. If these problems occur within the specified time, it indicates that the lifespan of the light bulb does not meet the requirements and there are quality issues.

Luminous uniformity
Observe whether the light bulb emits light uniformly. Uneven emission of light may result in unclear observation of certain areas of the ear. You can judge by placing a white screen in front of the light bulb and observing the shape and brightness distribution of the light spot on the screen.

►Key features:

► Company situation:

The company has been professionally operating various brands of original medical monitoring instruments since 2015. The company has many professional senior engineers and has sufficient ability to undertake various medical equipment maintenance work. Covering motherboards, sensors, probes, modules, connectors, shells, etc. for various medical monitoring equipment.

►About delivery:

We default to express delivery by DHL,Fedex, We will contact you as soon as possible when sending express delivery. If you have any questions after receiving the express delivery, please feel free to contact us at any time.