Page 1 Chapter 3 Common Diode Applications Basic Power Supply Circuits Page 2 Chapter 3 Common Diode Applications Basic Power Supply Circuits Power Supply ? A group of circuits used to convert ac to dc. ? Rectifier – Converts ac to pulsating dc. ? Filter – Reduces variations in the rectifier output. ? Voltage regulator – Maintains a constant dc output voltage. Page 3 Chapter 3 Common Diode Applications Basic Power Supply Circuits Power Supply ? A group of circuits used to convert ac to dc. ? Rectifier – Converts ac to pulsating dc. ? Filter – Reduces variations in the rectifier output. ? Voltage regulator – Maintains a constant dc output voltage. Transformers ? Transformers are described in terms of the relationship between secondary voltage (V S ) and primary voltage (V P ). ? Step-up – V S is greater than V P . ? Step-down – V S is less than V P . ? Isolation – V S is approximately equal to V P . Page 4 Chapter 3 Common Diode Applications Basic Power Supply Circuits Power Supply ? A group of circuits used to convert ac to dc. ? Rectifier – Converts ac to pulsating dc. ? Filter – Reduces variations in the rectifier output. ? Voltage regulator – Maintains a constant dc output voltage. Transformers ? Transformers are described in terms of the relationship between secondary voltage (V S ) and primary voltage (V P ). ? Step-up – V S is greater than V P . ? Step-down – V S is less than V P . ? Isolation – V S is approximately equal to V P . Transformer Voltage and Current Ratios S P P S P S I I V V N N = = Page 5 Chapter 3 Common Diode Applications Basic Power Supply Circuits Power Supply ? A group of circuits used to convert ac to dc. ? Rectifier – Converts ac to pulsating dc. ? Filter – Reduces variations in the rectifier output. ? Voltage regulator – Maintains a constant dc output voltage. Transformers ? Transformers are described in terms of the relationship between secondary voltage (V S ) and primary voltage (V P ). ? Step-up – V S is greater than V P . ? Step-down – V S is less than V P . ? Isolation – V S is approximately equal to V P . Transformer Voltage and Current Ratios S P P S P S I I V V N N = = Half-wave Rectifiers ? Half-wave rectifier – A diode placed in series between a transformer (or ac line input) and its load.Read More

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