Other Semiconductors

As a means of introducing this topic LAB 5 will be discussed. Slide A

Pictorially, this can be restated as in Slide B

Which nicely introduces some of the other semiconductor devices available and covered in this topic.

The treatment is slightly different from the book in that the lectures group the devices according to broad use categories.

Slide C

TREATMENT IN THE BOOK	TREATMENT IN LECTURES
The book groups "other semiconductor devices" as shown below into two terminal devices, chapter 19, and pnpn devices in chapter 20. You should be aware of this classification.	Lectures group "other semiconductor devices" by use category, firstly devices for use in opto-electronic applications, secondly, devices for use in switching applications and thirdly devices with other types of uses.
Chapter 19 - of Boylestad & Nashelsky Two Terminal Devices	DEVICES FOR USE IN OPTOELECTRONIC APPLICATIONS
Introduction Schottky Barrier (Hot Carrier) Diodes Varactor (Varicap) Diodes Power Diodes Tunnel Diodes Photodiodes Photoconductive Cells IR Emitters Liquid-Crystal Displays Solar Cells Thermistors Summary	LEDs How they work: Slide 1, Slide 1a Some typical applications: Slide 2 Examples of data sheets Numeric LED Display Outlines: Slide 3 Bar Graph LED Displays: Slide 4 Discrete LED Indicators: Slide 5, Slide 6 IR Emitters How they work: Slide 7, Slide 8 Examples of data sheets Infrared Emitting Diodes: Slide 9 Photodiodes How they work: Slide 10, Slide 11, Slide 12 Examples of data sheets Infrared Detector Diodes: Slide 13 Photo Conductive Cells How they work: Slide 14, Slide 15 Photo-transistor How they work: Slide 16, Slide 17, Slide 18 Examples of data sheets Photo-transistor detectors: Slide 19 Opto-electronic switch: Slide 20 Opto-Couplers Opto-Couplers, Opto-Isolators, Opto Interruptors What they are, how they work: Slide 21, Slide 22 Examples of data sheets: Slide 23, Slide 24, Slide 13 Solar Cells/Photovoltaic Cells: READ!!
Chapter 20 - of Boylestad & Nashelsky pnpn and other Devices	Devices for use in switching applications
Silicon-Controlled Rectifier Basic Silicon Controlled Rectifier Operation SCR Characteristics and Ratings SCR Construction and Terminal Identification SCR Applications Series Static Switch Variable-Resistance Phase Control Battery-Charging Regulator Temperature Controller Emergency-Lighting System Silicon Controlled Switch Gate Turn off Switch Light Activated SCR Shockley Diode DIAC TRIAC Unijunction Transistor PhotoTransistor Opto-Isolators Programmable Unijunction Transistor Summary	Silicon-Controlled Rectifier Basic Silicon Controlled Rectifier Operation Basics Slide 25, Slide 26 Breaking down the four layer structure into 2 three layer structures Slide 27 Just before the application of a voltage on the gate Slide 28 Just after the application of the gate voltage Slide 29 The regenerative effect Slide 30 SCR Characteristics and Ratings Slide 31 Slide 32 SCR Applications Series Static Switch Variable-Resistance Phase Control Battery-Charging Regulator Temperature Controller Emergency-Lighting System Silicon Controlled Switch Gate Turn off Switch Light Activated SCR DIAC TRIAC
	Schottky Barrier (Hot Carrier) Diodes Varactor (Varicap) Diodes: Read!! Power Diodes Tunnel Diodes: Read!! Shockley Diode Unijunction Transistor: Read!! Programmable Unijunction Transistor