Term
| Light Dependant Resistor (LDR) |
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Definition
| Resistance changes with the light level. as light gets brighter the resistance decreases. (BURD) |
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Term
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Definition
| Allows the user to change the resistance manually. |
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Term
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Definition
| Allows the user to control the flow of electricity. |
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Term
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Definition
| Provides the electrical energy for the circuit. |
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Term
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Definition
| Changes electrical energy into sound energy. |
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Term
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Definition
| Changes electrical energy into kinetic energy. |
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Term
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Definition
| Used to measure the voltage being dropped across a component. |
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Term
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Definition
| Only allows current to flow in one direction only. |
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Term
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Definition
| Changes electrical energy into light energy. |
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Term
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Definition
| Allows the user to control a high powered circuit via a low powered circuit. |
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Term
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Definition
| The higher the resistance the lower the current. |
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Term
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Definition
| Resistance changes with temperature. Temperature goes up then resistance decreases. (TURD) |
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Term
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Definition
| A current amplifier which switches on when 0.7v are dropped across it. |
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Term
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Definition
| Measures current in a circuit. |
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Term
| Light Emitting Diode (LED) |
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Definition
| Only allows current to flow in one direction only and emits light when the current flows through it. |
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Term
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Definition
| A voltage operated switch. The it allows current to flow when the voltage at its gate exceeds its threshold. The more voltage the more current allowed to flow. |
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Term
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Definition
| Acts as a voltage divider which can be changed manually. |
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Term
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Definition
| A type of resistor that changes its resistance with extension or compression. Extension – Resistance Up, Compression – Resistance Down |
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Term
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Definition
| A combination of a NPN and PNP transistor to allow a motor to rotate clockwise or anti clockwise. |
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