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Topic: Light position detecting monitor

Author Post

jadams

1 post

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Read post 14-01-2011 17:05

I am working on a project where I want to project a beam of visible light, say 5mm, on a monitor and determine the x-y coordinates of the location. Similar to a touch screen, but using light instead of touch. Does anyone know of such a product?

Thanks

kavenlee

7 posts

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Read post 09-03-2011 08:00

What is Bridge Rectifier? Let's learn something first. Electricity in a home's power outlet is not in the form that's required by the circuitry inside electronic appliances. At this time, you should use bridge rectifier to change something. Power supplies are circuits made up of various components that convert the electricity that comes from the wall outlet into the various forms needed by the appliance. A bridge rectifier is a common part of those power supplies. It's a bridge-like setup involving four diodes that provides the same polarity of output voltage for either polarity of input voltage.There are something about bridge rectifier.

Converting AC To DC

Many electronic circuits require DC (direct current) rather than AC (alternating current), as well as different voltages than supplied through a home's electric outlet. The purpose of a bridge rectifier is to convert AC to DC, this is also the function of bridge rectifier, and to provide various voltages as needed by the bridge rectifier.

Semiconductor Diodes

A power supply diodeDiodes are semiconductor components that allow electrical current to pass through them only in one direction. If the polarity (the "plus" and "minus") is reversed, current is blocked.

Bridge Rectifier Configuration

Basic schematic for a bridge rectifier circuitWhen four diodes are placed in a certain configuration in an electric circuit and an alternating current is supplied to them, the resulting output is a direct current. This setup is known as a "bridge rectifier" because the alternating current is rectified or changed to direct current

There’s additionally the necessity for inclusion of a voltage divide to determine optimum working voltages to the gate portals of stated multiplicity of said N-channel MOSFET means and mentioned multiplicity of mentioned P-channel means.

The method needs to also have a element to protect the gates of mentioned multiplicity of said N-channel MOSFET means and mentioned multiplicity of stated P-channel MOSFET means from false conduction due to some unauthentic noise impulse voltages channeled to mentioned fill bridge rectifier.

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