Elenco Motion Detector Kit User Manual

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Low Pass Filter

Decreases all signals above a certain frequency and passes frequencies below
that frequency.

Negative Feedback

To allow a portion of the output signal to be brought back and cancel part of the
input.

Noise

A random, persistent disturbance of a signal.

Open Loop Gain

The maximum gain available without feedback.

Oscillator

A device used to vary between alternate extremes (varies from high to low).

Peak

The top of a wave or mountain.

Polarity

The division of two opposites.

Power

Electrical energy; strength, force, or might.

Pyroelectric Effect

When certain metals change temperature, they produce energy.

RC Network

An assembly of resistors and capacitors.

Reference Voltage

Level of electronic element used for providing resistance in a circuit.

Resistor

An electric element used for providing resistance in a circuit.

Response Curve

The shape of an output produced by a circuit.

Solder

An alloy (mixture) of tin and lead used in the melted state to join or repair metal
parts.

Transistor

A three-terminal semiconductor device used for amplification, switching, and
detection.

Valve

A mechanical device that regulates the flow of gases, liquids, or loose materials by
blocking and uncovering openings.

Voltage

An electromotive force.

Wavelength

The distance in a periodic wave between 2 points of corresponding phases.\

For further information on infrared light and waves . . .