Linear power supply as the name implies means a power supply that has its input power linearly related to its output power. What this means is that, as the input power increases, the output power increases too, and as the input power decreases, the output power decreases too. The parts required to design and simulate the circuit include: AC voltage source 220V to 12V transformer (1) Bridge rectifier (1) Capacitor 10uF (1) Capacitor 1uF (1) Voltage regulator IC 5V (1) Switch (1) Resistor 100Ω (1) LED (1) Bread board Jumper wires

1. Linear Power Supply

2. INTRODUCTION
• A linear power supply is a power supply unit (PSU) that does not
contain any switching or digital components
• It has some outstanding characteristics compared to switching PSUs
such as very low noise and ripple, immunity from mains-borne noise,
simplicity, robustness, ease of design, and repair.
• They can also generate very high voltages (thousands of volts) and
very low voltages (less than 1V). They can easily generate multiple
output voltages

3. Advantages
• Linear power supplies are reliable, simplistic
• They produce minimal noise.
• LPS are cost-effective to manufacture
Disadvantages
• Higher heat loss
• A larger size
• LPS are effectively less efficient.

4. Linear Power Supply:

5. Problem Statement:
Vin=230Vrms ±10V,50Hz 1Φ
DC(V)= ± 5V
Output Current= 3A
Permissible Ripple Content= 15
Temperature: 0 to 60⁰ C

6. DESIGN STEPS FOR BUCK CONVERTER
Step 1 : Selection of topology
Step 2: Compute the maximum load conditions
Step 3: Select an appropriate three terminal regulator
Step 4: Compute the permissible minimum voltage
Step 5: Compute maximum ripple allowed
Step 6: Compute Vin(max)
Step 7: Selection of filter capacitors C1 and C2
Step 8: Select rectifier diodes
Step 9: Selection of transformer
Step 10: Selection of current boost transistors
Step 11: Selecting resistors R1 and R2
Step 12: Heat sink calculations

7. CIRCUIT Diagram:

8. Thank You!!