Heavy Truck

Fundamentals of Electronics & Computers

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Across 3. Allows current to flow only in one direction untill voltage reaches a specific point. then voltage and current can flow in a reverse direction. 8. Used in an Voltage generator to convert A/C into D/C. 12. A one way check valve for electricity 13. Voltage operates on a variable voltage value. 14. Made of exactly 4 electrons in it's outer ring 15. Small amounts of impurities added to a semiconductor.

Down 1. A square wave of fixed frequency but variable duty cycle. 2. A diode that produces light when forward biased. 4. The part of the transistor that has an arrow on it. 5. Diodes that turn on or off when subjected to light. 6. The control part of the transistor. 7. Acts like a relay but has no moving parts. 9. Number of pulses per second. 10. A variable resistor that reacts to temperature. 11. The point wherea P & N type material are bonded together.

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