Digital Electronics CP1131 Module 1: Diodes Review

Diode = Conducts current in one direction Resistor = Limits current flow Capacitor = Stores and releases electrical energy Transistor = Amplifies or switches electronic signals

Anode = Positive terminal of a diode Cathode = Negative terminal of a diode PN junction = Type of junction in a semiconductor diode Rectifier = Another name for a semiconductor diode

Ideal diode = Zero resistance in one direction, infinite resistance in the reverse direction Real diode = Negligible resistance in one direction, very high resistance in the reverse direction Practical diode = Has a fine line to indicate cathode, while the other end represents anode Semiconductor diode = Most common type with a PN junction

<p>Semiconductors = Conductivity between conductors and non-conductors Metals = High conductivity Insulators = Very low conductivity Ceramics = Non-conductors or insulators</p> Signup and view all the answers

<p>Diode = Acts as a valve for current flow Resistor = Limits current flow to protect other components Capacitor = Stores and releases electrical energy at specific times Transistor = Amplifies or switches electronic signals based on input</p> Signup and view all the answers

<p>Aluminium = P-type semiconductor Antimony = N-type semiconductor Indium = P-type semiconductor Arsenic = N-type semiconductor</p> Signup and view all the answers

<p>Holes = N-type semiconductor Electrons = P-type semiconductor</p> Signup and view all the answers

<p>Depletion region = Region free from movable charge carriers PN junction = Region where positive and negative ions are formed Barrier junction = Region acting as a barrier between P and N type materials Potential Barrier = Region with potential difference due to the formation of ions</p> Signup and view all the answers

<p>Forward biased condition = Higher potential at the P-side and lower potential at the N-side Reverse biased condition = Higher potential at the N-side and lower potential at the P-side</p> Signup and view all the answers

<p>Trivalent impurity = Provides extra holes known as the acceptor atom Pentavalent impurity = Adds electrons as majority carriers PN junction = Formed when P-type and N-type materials are brought close to each other Depletion region = Acts as a barrier between P and N type materials</p> Signup and view all the answers