Anglicky v odborných předmětech "Support of teaching technical subjects in English“

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Anglicky v odbornch pedmtech"Support of teaching technical subjects in EnglishTutorial: Mechanic - electrician

Topic: Technical training II. class Semiconductor devices 2Prepared by: Melichak Lubomr

Projekt Anglicky v odbornch pedmtech, CZ.1.07/1.3.09/04.0002je spolufinancovn Evropskm socilnm fondem a sttnm rozpotem esk republiky.P-N transitionIs the area of the ingredient interface of P-type semiconductors and N-type semiconductors. P-N junction transmits an electric current in only one direction.

Properties of P-N junctions used in semiconductor components diode, transistor, photodiode and others.

SEMICONDUCTOR DEVICES 2

Diode is an electronic semiconductor device with two electrodes. Each diode has two working outlets, which are called the cathode and the anode. The basic function of diodes is to permit current flow in the direction from the anode to the cathode from very low voltages. SEMICONDUCTOR DEVICES 2

Diodes-electrotechnical symbolsElectrotechnical schematic symbol for diodes

Electrotechnical schematic symbol for zener diodes

Electrotechnical schematic symbol forcapacitance diodes - varicap

Electrotechnical schematic symbol for LED diodes

Electrotechnical schematic symbol for photodiodes

SEMICONDUCTOR DEVICES 2

DIVISION OF DIODESAccording to design principle and purpose:Cylindrical diode historically the oldest type of semiconductor diode, basic crystalsJunction diodeSchottky diode It does not use a P-N junction, but a metal-semiconductor junctionSwitch diode 0.1 to 0.2VRectifier diode- 0.5V

SEMICONDUCTOR DEVICES 2

5TYPES OF DIODEPhotodiode incoming light causes the creation of a pair of electrons in the region of the P-N junction positive hole, and thus increases the conductivity or increases the voltage at the P-N junction.LED luminous diode. Recombination in the region of the P-N junction when the current flows in the forward direction to cause the emission of light rays.Zener diode is usually designed so that the reverse direction occurs at a voltage of a few volts for nondestructive zener breakdown. Thanks to this it can be used as a voltage stabiliser.

SEMICONDUCTOR DEVICES 2

6TYPES OF DIODETunnel diode +0VCapacitance diode(varicap) is a special diode designed to have greater capacity. With the size of the voltage on the diode we can slightly change its capacity. This phenomenon is used for example in tuning circuits such as radio receivers.PIN diode is a special diode which has an intrinsic regulator in the middle.

SEMICONDUCTOR DEVICES 2

1. Define a P-N junction2. What is a diode?3. Write how to divide diodes.4. Name the types of diodesActivities for students mandatory slideTask, test, questions .1. Draw the schematic symbol for diodes2. Draw the schematic symbol for photodiodes3. Draw the schematic symbol for LED diodes4. Draw the schematic symbol for zener diodes5. Draw the schematic symbol for capacitance diodesActivities for students mandatory slideTask, test, questions . Two slides are best.

Vclav MalinaPoznvme elektroniku I. Adrian Schommers Elektronika tajemstv zbaven. ISBN 3-92608-32-5

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