BECE MODULE 4

• Diode- A semiconductor device that essentially acts as a one-way switch for current It allows current to flow easily in one direction but severely restricts current from flowing in the opposite direction
• Rectifier Diode - Designed specifically for circuits that need to convert alternating current to direct-current
• The most common rectifier diodes are identified by model numbers 1 N 4001 through 1 N 4007
• Signal Diodes- Designed for much smaller current loads than a rectifier diode and can typically handleabout 100 mA or 200 mA of current
• The commonly used signal diode is the 1 N 4148.It has a close brother called 1 N 914 that can be used in its place if can t find a 1 N 4148
• Zener Diodes - A normal diode, the peak inverse voltage is usually pretty high 50 100 or even 1 000 V. used in circuits where a predictable voltage is required
• Load line Analysis - used to analyze diode circuit using its actual characteristics
• Cathode- negatively charged electrode by which electronsnenter an electrical device
• Anode - positively charged electrode by which the electronsnleave a device
• Rectifier- converts alternating current ( into direct current )
• Half wave Rectifiers- A rectifier that permit only half of the AC signal to pass from input to output
• Sinusoidal Inputs Full Wave Rectification- process can be improved by using full wave rectifier circuit
• Clippers - Networks that employ diode to “clip” away portion of an input signal without distorting the remaining part of the applied waveform.
• Biased Clippers- Adding a DC source in series with the clipping diode changes the effective forward
• Parallel Clippers- The diode in a parallel clipper circuits “clips” any voltage that forward bias it.
• Clampers - A network constructed of a diode, a resistor, and a capacitor that shifts a waveform to a different DC
• Capacitor- It stores and releases electrical energy.
• dielectric- two conductive plates separated by an insulating material
• Clampers- An electronic circuit that adds a DC level to an AC signal a network constructed of a diode, a resistor, and a capacitor that shifts a waveform to a different dc level without changing the appearance of the applied signals.
• Zener diode is used as regulator (regulator)
• Voltage multipliers circuits - are used to increase (multiply) the peak input voltage to a higher output voltage, such as doubling, tripling, or even higher multiples of the input voltage.
• Voltage Doubler (V_M or Voltage Multiplier)- an electrical circuit that takes an input voltage and converts it to an output voltage that is approximately twice the input voltage.