Fig. 1 - Symmetrical Power Supply for Power Amplifiers |

**audio power amplifiers**, here is a good

**full wave rectifier**

**linear symmetric power supply**that will meet the power demand without leaving anything to be desired in terms of

**stability**.

This **power supply** is designed for amplifiers with power up to **2500W**, it will work without any problems with **great stability**.

Most power amplifier circuits require a **symmetrical power supply**, and what differs from each other is always the power required from the supply.

As we know, a** good power supply **with good filtering will **determine** the **quality** and final power of your **amplifier**.

### You may be interested in:

- Adjustable Power Supply 1.2V to 37V, 6A, Short Circuit Protection with LM317 and TIP36 + PCB
- Adjustable Switching Power Supply 5.1 to 40V, 2.5 Amp using L4960 + PCB
- Symmetrical Adjustable Power Supply 1.25V to 47V 10 Amps with Short Circuit Protection + PCB
- Adjustable Power Supply 1.2 to 37V High Current 20A with LM317 and TIP35C + PCB
- Adjustable Power Supply 1.25v to 57V, 6 Amps with TIP36C + LM317HV + PCB
- Adjustable Power Supply 1.25v to 33V, 3 Amps with LM350 + PCB
- Stabilized Power Supply 13.8V High Current 10 Amps with PCB

The complete schematic diagram of the power supply is shown below in **Figure 2**, it is a simple but complete power supply.

Fig.2 - Electrical schematic Symmetrical Power Supply for Power Amplifiers |

However it is worth remembering that for each amplifier power range, we can assemble a type of power supply according to the power of your amplifier.

We are presenting **3 different configurations to exemplify** the different types of power amplifiers.

There are 3 examples of simplified formulas for you to calculate the power supply Current and Voltage according to the power of your amplifier.

Remembering that the **PCB** printed circuit board is the same for **all** configurations.

## Configuration 1:

**400W**

**45V**supply, and the maximum power of

**400W**. Calculating ohms Law:

**P = V * I**

- I = P / V
- I = 400/45
- I =
**8.88A**

- V_ripple = V_ps * 5%
- V_ripple = 45V * 5%
- V_ripple =
**2.25V**

*You may be calculating the percentage that best suits your design*."

**C = I / F * V_ripple**

- C = 8.88 / 120 * 2.25
- C = 8.88 / 270
- C = 0.032888 = >
**C = 32.888X10^-6 = 32.888uF**

**uF**and divide by 6 Capacitors.

- C_individual = 32.888 / 6
- C_individual
**= 5.481uF**

**6.800uF / 63V**

**6 x 6**.800uF Capacitor**15A**rectifier bridge

## Configuration 2:

**1200W**

**75V**supply, and the maximum power of

**1200W**. Calculating ohms Law:

**P = V * I**

- I = P / V
- I = 1200/75
- I =
**16A**

- V_ripple = V_ps * 5%
- V_ripple = 75V * 5%
- V_ripple =
**3.75V**

*You may be calculating the percentage that best suits your design*."

**V_ripple = I / F * C**

**C**= I / F * V_ripple- C = 16 / 120 * 3.75
- C = 16 / 450
- C = 0.035555 = >
**C = 35.555X10^-6 = 35.555uF**

**uF**and divide by 6 Capacitors.

- C_individual = 35.555 / 6
- C_individual
**= 5.925uF**

**6.800uF / 100V**

**6 x 6**.800uF Capacitor**25A**rectifier bridge

## Configuration 3:

**2500W**

**95V**supply, and the maximum power of

**2500W**. Calculating ohms Law:

**P = V * I**

- I = P / V
- I = 2500/95
- I =
**26A**

- V_ripple = V_ps * 5%
- V_ripple = 95V * 5%
- V_ripple =
**4.75V**

*You may be calculating the percentage that best suits your design*."

**C**= I / F * V_ripple

- C = 26 / 120 * 4.75
- C = 26 / 570
- C = 0.045614 = >
**C = 45.614X10^-6 = 45.614uF**

**uF**and divide by 6 Capacitors.

- C_individual = 45.614 / 6
- C_individual
**= 7.602uF**

**10.000uF / 200V**

**6 x 10**.000uF Capacitor**40A**rectifier bridge

## Download

We provide the files with the **PCB**, the schematic, the PDF, GERBER and JPG, PNG and provide a direct link for free download and a direct link, "* MEGA*".

**Click on the direct link to download the files: ****Layout PCB, PDF, GERBER, JPG**

If you have any questions, suggestions or corrections, please leave them in the comments and we will answer them soon.

**Subscribe to our blog!!! Click here - elcircuits.com!!!**

**My Best Regards!!!**

## 0 Comments