Provide best view
Precautions while using Overhead Projectors
Provide best view
An overhead projector should have an on/off switch. This switch should automatically allow the cooling fan to continue running even when the switch is off so that the bulb can cool properly. Overheads also allow you to get the best view of your overhead transparency by offering different methods of adjusting the focus. You can raise and lower the head on many models with a knob or lever. Other models have a keystone feature that allows you to adjust the image if its not projecting square with the screen. Some models of overheads may have bulb changers that make it easy to swap out used bulbs.
Bring a spare bulb
Function
Overheating of projectors might cause melting of different parts of the device
Cover the transparency when you are done using it
Basic Understanding
Considerations
Overhead projector has been a favorite presentation tool
Overhead Projector Usage
Do not face the projected image on the screen
Overhead projectors are more reachable and less costly
Overhead projectors
The Use of Overhead Projectors in Education
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