Question

Draw single phase full wave mid-point converter for inductive load. Draw input and output waveforms for it.

Answer 1

For a single-phase full-wave midpoint converter with an inductive load, you'll have a circuit with two SCRs (Silicon Controlled Rectifiers) connected in a bridge configuration. Here’s a description of the circuit and waveforms:

### Circuit Diagram
1. **Input AC Source**: Connects to the primary side of the converter.
2. **Two SCRs**: SCR1 and SCR2 are connected in series across the AC source. The midpoint of these two SCRs is the positive output terminal.
3. **Inductive Load**: Connected across the output terminals.
4. **Neutral**: Connected between the SCRs and the negative terminal of the load.

### Waveforms
1. **Input Voltage (AC)**: A sinusoidal waveform.
2. **Output Voltage (DC)**: Pulsed DC waveform, which is typically rectified and smoothened by the inductive load.
3. **Current Through Load**: Typically a continuous waveform due to the inductive nature, which smoothens the pulsating output voltage.

If you need the exact diagrams, you might want to look them up in electronics textbooks or specific electronics simulation software for accurate visual representations.

Answer 2

A Single Phase Full Wave Mid-Point Converter, also known as a Single Phase Half-Wave Rectifier with a center-tapped transformer, is a common circuit for converting AC to DC. Here's a basic description of the circuit and its waveforms:

### **Circuit Description**

1. **Transformer**: The transformer has a center-tap, which provides two equal secondary voltages with respect to the center tap.
2. **Diodes**: Two diodes are connected in a bridge configuration. Each diode conducts for one half-cycle of the AC input voltage.
3. **Inductive Load**: The load is inductive, meaning it has inductance \( L \) which affects the output waveform.

### **Circuit Diagram**

```
      +AC
       |
       |
       +----|>|----+----|>|----+
       |     D1    |     D2    |
       |          ( )           |
      ( )         |            ( )
      ( )         |            ( )
       |          |            |
       |          +            |
      ---         |            |
      ---         |            |
       |         +++          |
       |          |           ( )
       |          |            |
       |         ---          ---
       |          |            |
       +---------+------------+
       |
      GND
```

- **D1** and **D2** are the diodes.
- **( )** represents the inductive load.

### **Input and Output Waveforms**

#### **Input AC Voltage Waveform**

The input AC voltage waveform is a sinusoidal waveform:

```
V_in (AC)
  ^
  |                  /\
  |                /    \
  |              /        \
  |            /            \
  |          /                \
  |--------/--------------------\--------> Time
```

#### **Output DC Voltage Waveform**

For an inductive load, the output voltage waveform is smoother and resembles a full-wave rectified waveform with some ripple. Assuming a well-filtered output, it will look like:

```
V_out (DC)
  ^
  |         ____         ____
  |        |    |       |    |
  |        |    |       |    |
  |--------|    |-------|    |--------> Time
  |                  Ripple
```

### **Explanation of Waveforms**

1. **Input Waveform**: The input is a sinusoidal AC voltage.
2. **Output Waveform**: The output voltage is a pulsating DC voltage. The inductive load smooths the waveform, reducing ripple, but it’s not perfectly flat. The output voltage is always positive because of the full-wave rectification, and the inductance maintains a smoother current flow through the load.

If you need a detailed explanation or a specific waveform analysis, just let me know!