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Rectifier PCB

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What does rectifier pcb do?

A rectifier PCB is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC),which flows in only one direction.

This rectifier board converts AC input voltage into separate positive DC and negative DC voltage outputs, perfect for supplying power to amplifier boards requiring large symmetrical power supplies!

rectifier pcb
rectifier pcbis

Why rectifier pcbis used in power supply?

Using a rectifier in the power supply helps in converting AC to DC power supply.

Bridge rectifiers are widely used for large appliances, where they are capable of converting high AC voltage to low DC voltage.

Bridge Rectifiers use four diodes that are arranged cleverly to convert the AC supply voltage to a DC supply voltage. The output signal of

such a circuit is always of the same polarity regardless of the polarities of the input AC signal. … The current will flow through the load resistor via the two forward-biased diodes.

What is the importance of rectifier pcb in electric circuits?

Rectifiers are essential circuits for power supplies that convert an AC input voltage into a DC voltage supply that can be used to power electronic circuits.

The filter is a device that allows passing the dc component of the load and blocks the ac component of the rectifier output. Thus the output of the filter circuit will be a steady dc voltage.

importance of rectifier pcb

In China, Venture is the popular PCB manufacturer and supplier for more than 10 years. A wide array of PCBs from Venture is offered such as the Rectifier PCB.

We rendered our valued clients the excellent quality rectifier PCB at the most affordable pricing. As a leading manufacturer, different types of rectifier PCBs are produced:

  • rectifier filter power board amplifier
  • lot rectifier filter board
  • rectifier filter mini board
  • single bridge rectifier filter

Your Leading Rectifier PCB Supplier in China

Venture is a famous PCB manufacturer and supplier in China for more than 10 years. We have a lot of PCBs that are offered such as rectifier PCB.

Venture rectifier PCB is fabricated for different application use. Our rectifier PCB is suitable for use in the following applications:

  • Audio Amplifiers
  • Sound Mixers
  • Graphic Equalizers
  • Professional Keyboards
  • Home Theater Systems
  • Battery Chargers
  • Power Supply for Hobby Projects

All of our rectifier PCB is easy to assemble and has a wide supply voltage support. Venture manufactures a high-quality, functional, and durable rectifier PCB for your projects.

Venture is one of the top suppliers and manufacturers of rectifier PCB in China for more than 10 years. As a leading manufacturer, we will let you experience value-driven services and high-quality products.

In China, Venture is a professional manufacturer and supplier of any kind of PCB you need.

We strive to deliver superior quality rectifier PCB to anywhere in the world through our excellent customer relationship and professional services.

Depending on the customers’ requirements, we can produce all kinds of rectifier PCB for your projects. No matter what your application is, you won’t be disappointed choosing Venture rectifier PCB.

Venture is dedicated to helping you supply your needs in regards to the rectifier PCBs.

In fact, we are always maintaining the highest level of quality regarding finished products to passed various tests to meet international standards.

Aside from rectifier PCB, you can also avail of our Seagate PCB, solar inverter PCB, wifi router PCB, XBee PCB, Xbox PCB, and so on. You can purchase our PCBs at the most affordable rates.

If you are interested in our rectifier PCB, don’t hesitate to contact us now!

Rectifier PCB: The Ultimate FAQ Guide


If you have any question about rectifier PCB, you will find the answer right here.

From design, features, specification, to material type – you will find all information you’re looking in this guide.

So, keep reading to learn more.

What Is Rectifier PCB?

A rectifier printed circuit board helps in the conversion of AC to DC.

The rectifier PCB is the most utilized circuit board since nearly every electronic device operates on DC.

This type of PCB makes part of the key components of an electronic appliance power supply.

Most electronic circuitries need rectified DC energy supply for powering several electronic basic elements from AC mains supply.

Rectifier circuit

Rectifier circuit

Which Are The Main Types Of Rectifier PCB Available?

Rectifiers PCBs are an instrumental component of any power supply system and it is important you know the different types.

Based on the application, various types of rectifier circuit boards are utilized depending on the system you are using it in.

The main two categories include single-phase and three-phase rectifier PCBs that indicate the number of diodes applied in the circuit.

Then there is bridge, full wave and half wave rectifier PCBs, which impact half cycles created.

Let’s look at each rectifier PCB type in details to help you decide on which is the best for your application:

Rectifier PCB

Rectifier PCB

Single-Phase Rectifier PCB

Single phase rectifier circuit board has one phase AC power input.

It has exceptionally simple design in need of 1, 2 or 4 diodes subject to the nature of application.

This implies that this category of rectifier printed circuit board supplies a mall power quantity and has low transformer utilization factor (TUF).

During conversion, single-phase rectifier PCB utilizes only one phase of the secondary coil of transformer.

Moreover, diodes are coupled to the transformer secondary winding. Consequently, this configuration results in high ripple factor.

Three-Phase Rectifier PCB

Three-phase rectifier printed circuit board has a 3-phase AC input.

The structure of this rectifier PCB requires 3 or 6 diodes coupled to every phase of transformer secondary loop.

They are used as substitute to single-phase rectifier PCBs to minimize ripple factor.

Comparing the 2 rectifier circuit board types, 3-phase rectifier PCB is ideal for large systems since they supply large power amounts.

Also, no auxiliary filter to minimize ripple factor is necessary.

For these reasons, three-phase rectifier printed circuit boards feature greater transformer utilization factor and efficiency.

Half Wave Rectifier PCBs

Half wave rectifier printed circuit board transforms one of the AC input half cycle to oscillating DC output.

Consequently, it admits one of AC input half cycle whilst shutting off other half cycle.

The half cycle could be either negative or positive.

Half wave rectifier circuit board is the simplest type of rectifier PCB since it employs only a single diode.

This rectifier PCB has high ripple factor because of the DC output pulsating nature.

Therefore, they are not efficient and commonly require filters to lower ripple factor.

Half wave rectifier

Half wave rectifier

Full Wave Rectifier PCB

Full wave rectifier PCB transforms both half cycles (negative and positive) of AC input to pulsating DC output.

This category of rectifier PCB employs a center-tapped transformer that is attached across the center of transformer secondary winding.

The transformer sections the input AC into 2 portions, negative and positive.

Due to this fact, full wave rectifier printed circuit boards are more effective as they give lesser ripple factor in contrast to half wave design.

In addition, there is no signal wastage because it permits both cycles concurrently.

Full wave rectifier

Full wave rectifier

Bridge Rectifier PCB

Bridge rectifier PCB is broadly applied in power supply to deliver DC voltage to the system components.

It employs 4 or extra diodes in conjunction with load resistor.

The four dues assume a series arrangement, where only 2 diodes admit current in every half cycle. They are presumed to function in sets.

One set of diodes admit current via the +ve half cycle while the other admits current during the -ve half cycle.

Introduction of input AC is done across the two terminals.

On the other hand, you obtain the output DC over the resistor inductor that is attached in the middle of the remaining 2 terminals.

Bridge rectifier printed circuit board admits current in both -ve and +ve half cycles of AC input. Center-tapped transformer, which could be excessively expensive, is not necessary in its circuit arrangement.

Uncontrolled Rectifier PCB

Uncontrolled rectifier PCB refers to when you use only diodes in the circuitry.

Typically, diodes are uncontrolled and does permit power variation based on load requirements.

All the classes of rectifier printed circuit boards we have detailed so far are in this group.

They typically find applications in fixed or constant power supply systems.

Controlled Rectifier PCB

Controlled rectifier circuit boards utilize thyristors to regulate the DC output.

Often, you use them when there is need to control current more accurately since have only the capability to be on or off.

These classes of rectifier PCBs enable continual control and guarantee there exist no power wastage.

Center-Tap Rectifier PCBs

With center-tapped full wave rectifier circuit board, you use only 2 diodes. the connection of the diodes is done on the adjacent sides of center-tapped transformer as illustrated in the image below.

The center-tap often presumed as the 0V reference point or the ground point.

Center Tap Full Wave Rectifier PCB circuit

Center Tap Full Wave Rectifier PCB circuit

Which Is The Most Efficient Rectifier PCB Type?

In comparison to other rectifier PCBs, bridge rectifier PCB is the most effective type of rectifier printed circuit board.

It is a full-wave rectifier circuit board type that uses 4 diodes, which are interconnected in bridge arrangement.

What Are The Applications Of Rectifier PCB?

Fundamentally, nearly all electronic circuitries function on DC voltages.

The primary reason of utilizing rectifier PCB is for rectification (transforming AC to DC voltages).

This implies that rectifier circuit boards are employed in nearly all electronic and power rectification appliances.

Here are some of the common applications of the various types of rectifier PCB:

  • Rectification i.e. transformation of AC to DC voltages.
  • Rectifiers are applied in electric welding to give the polarized voltage.
  • It is as well employed rolling stock, traction and 3-phase traction motors applied in running trains.
  • Half wave rectifier PCBs are applied in soldiering iron and mosquito repellent.
  • Further, half wave rectifier circuit board is equally employed in AM radio as sensor and signal peak sensor.
  • They are also applied in voltage multipliers, modulation and demodulation.

How Does Rectifier PCB Compare To Inverter PCB?

The main difference between Rectifier PCB vs. Inverter PCB is in their function.

While Rectifier printed circuit board helps in the conversion of AC to DC, the purpose of inverter PCB is to convert DC to AC.

What Are The Main Components Of Rectifier PCB?

The key parts in any rectifier printed circuit board include the following:


The primary component in any type of rectifier PCB is typically the diode or diodes.

These elements are distinct in only permitting current across in a single direction.

Currently, semiconductor diodes are the common types of diodes used, which take up small space and are less costly.

Before the diodes conduct in forward bias, you need a small voltage across it.

his is referred to as turn on voltage, which depends on the type of material and diode rectifier used.

With an ordinary silicon diode rectifier, the turn on voltage is about 0.6 volts. Similarly, that for Germanium diodes and silicon Schottky diodes ranges from 0.2 – 0.3V.

Surface mount diodes on rectifier PCB

Surface Mount Diodes on Rectifier PCB


Step-down type of transformer that alters the amplitude of input voltage. Most types of rectifier PCBs employ 230/12V step-down transformers.


Because the output of rectifier PCB is of pulsating type, filtering is essential to produce it as pure DC.

Filtering is often done with a single or more capacitors fixed across the load, and the capacitor rating is dependent on output voltage.


The role of regulator is to maintain the output of the rectifier PCB to a steady level.

For example, let’s consider a microcontroller that operates at 5V DC, yet the output voltage is about 16V.

A voltage regulator is needed to reduce and maintain the voltage at a steady level, irrespective of alterations in the AC input.

Load Resistor

This device controls the flow of current to a specific level.

Normally connected in series with the rectifier diode, the load resistor regulates the output current, with its typical values ranging from 100-500 Ohms.

Why Is Filtering essential In Full-Wave Rectifier Printed Circuit Board?

The waveform of output voltage after rectification isn’t a proper DC.

Therefore, you can perform filtering utilizing a capacitor to transform it more into DC waveform.

The reservoir or smoothing capacitor is connected parallel to the load across full wave rectifier PCB output.

It raises the average level of DC output to the desired average output voltage.

This is due to the fact that the capacitor not only functions as a filtering element.

It also occasionally charges and discharges successfully raising the output DC voltage.

The capacitor will charge until the waveform reaches its optimum and discharges evenly into the load circuitry when waveform begins going low.

Therefore, if the output is getting low, the capacitor sustains the right voltage provision into the load circuitry, thus producing the DC.

Which Are The Types Of Filters Used In Rectifier PCB?

As we have already seen, a rectifier PCB output might need extra smoothing to generate an output that is both invariable and stable.

However, this relies on the rectifier circuit board configuration and AC supply type.

Majority of rectifier PCB applications require a steady and regular DC voltage, that is power supplies of radios, TVs, and PCs.

Thus, to cater for these needs, rectifier printed circuit board designs integrate electronic filters to harmonize the its output.

Generally, these electronic filters can comprise of:

Inductor Filtering

The inductor filter circuit applies the principle that current at either ends cannot change abruptly.

To successfully smoothen the output current, you should connect the load and inductor in series.

One of the main advantages of this rectifier PCB filtering mechanism is the large angle of conduction of the rectifier diode.

Moreover, there is small peak current, and the output DC is comparatively flat.

However, inductor filtering involves an iron core that is heavy and massive, leading to electromagnetic interference.

Additionally, it is only ideal for high current and low voltage rectifier PCB applications.

Capacitor Filtering

Capacitor filtering involves connecting in parallel with load, a big capacity capacitor in the rectifier PCB. The degree of pulsation of the rectifier PCB output voltage is substantially minimized, and waveform is practically smooth, filtering the output.

This is as a result of the capacitor’s charging and discharging effect and voltage existence across the capacitor.

The greater the load resistance or capacitor capacitance, the more moderate the discharging of capacitor and smoother output voltage. Furthermore, the pulsation aspect reduces and the average output voltage value increases.

However, you need to note that the diode conduction in the single-phase capacitor filter circuitry is not full half cycle conduction anymore.

This is because of the voltage impact of the capacitor filter.

Compound Filtering

The compound filter represents a filtering circuitry that features a blend of resistor-capacitor or inductor-capacitor form. The principle of operation is similar to that of single inductor filter or capacitor filter.

However, compound filtering has a smother output waveform and the load is closely equivalent to power supply voltage of dry battery.

Compound filter circuit

Compound Filter Circuit

How Many Diodes Are Used In Bridge Rectifier PCB Construction?

Bridge rectifier PCBs are extensively utilized in power supplies to provide DC voltage to the elements.

They employ 4 or additional diodes besides load resistor.

The four diodes arrangement is in series with only 2 diodes permitting electric current in every half cycle.

The diodes are deemed to operate in pairs.

One pair permits electric current across the positive half cycle, while the other half permits in negative half cycle.

You apply the AC input across 2 terminals, while obtaining the DC output over the resistor inductor fixed between the remaining two terminals.

Why Does The Design of Bridge Rectifier PCB Utilizes Four Diodes?

Four diodes are applied to design bridge rectifier circuit board since they permit full-wave rectification without the need for a center-tapped transformer.

Bridge rectifier PCB is often utilized to give full-wave rectification in common applications.

You can do the four diodes arrangement in a closed-loop configuration to transform the AC to DC effectively.

The main advantage of this configuration is the reduction in size and cost because there is no use of center-tapped transformer.

Full wave bridge rectifier PCB

Full wave bridge rectifier PCB

What Is The Pin Configuration Of Bridge Rectifier Used In Rectifier PCB?

The pin configuration of bridge rectifier such as RB-156 IC is described below.

PIN Configuration of Bridge Rectifier

PIN Configuration of Bridge Rectifier

  • PIN 1 (Line/Phase): AC input pin that you can connect the phase wire from AC supply.
  • PIN 2 (Neutral): AC input pin where you connect the neutral wire form AC supply.
  • PIN 3 (Positive): DC output pin from which you get the rectifier’s positive DC voltage.
  • PIN 4 (Ground/Negative): DC output pin from which you get the rectifier PCB’s ground voltage.

How Does Bridge Rectifier Circuit Board Work?

Bridge rectifier PCB is among the techniques of smoothing the unnecessary polarity ripple coming from AC supply for utilization by DC power supplies.

The devices apply unidirectional current conducting features of semiconductor diodes, which compel the AC input to sustain a consistent negative/positive orientation.

The bridge rectifier PCB device operates by means of diodes set in pairs.

Every pair has an AC input spot and sharing one negative and positive DC output spots.

If you apply AC powder to the bridge, every pair alternately permits or blocks current to flow across it.

This enables AC voltage’s polarity transformations though ensures that every AC cycle’s negative and positive peaks leave at one spot on the bridge.

Consequently, the bridge rectifier circuit board generates DC voltage output having a defined polarity and harmonized waveform and reduced residuary AC ripple.

Any residual ripple in the DC output may be further filtered by installing smoothing modules like capacitors across the rectifier PCB output.

How Does Bridge Rectifier Printed Circuit Board And Center-Tap Rectifier PCB Compare?

Designing a center-tap rectifier PCB is normally very challenging due to the special transformer entailed.

Moreover, a center-tapped transformer is expensive.

One primary difference between bridge rectifier PCB vs. center-tap rectifier PCB is in the number of diodes used in fabrication.

Bridge rectifier circuit board requires 4 diodes whereas center-tap rectifier PCB requires just 2 diodes.

Since silicon diodes is less costly compared to center-tap transformer, bridge rectifier PCB is ideal solution for DC power supply applications.

The following are some of the benefits of bridge rectifier PCB over center-tapped rectifier PCB:

  • You can fabricate bridge rectifier printed circuit board with/without transformer. When you use a transformer, any conventional step up/step down transformer can serve the purpose.
    However, center-tapped rectifier PCB does not allow this freedom. Here, the rectifier circuit board design relies on center-tapped transformer, that you cannot replace.
  • Bridge rectifier PCB is appropriate for applications involving high voltage. This is due to its higher inverse voltage (PIV) in comparison to that of center tap rectifier PCB.
  • Bridge rectifier printed circuit board boasts of greater transformer utilization factor.

However, the key disadvantage of bridge rectifier PCB over center tap rectifier PCB is the use of 4 diodes in its construction.

A pair of diodes in bridge rectifier circuit conduct concurrently on an input half cycle.

On the other hand, a center-tapped rectifier circuit features just a single diode conducting on 1-half cycle.

As a result, there is a net voltage drop throughout the diodes found in bridge rectifier PCB device (twice the center-tapped rectifier value).

What Are The Advantages And Disadvantages Of Full-Wave Rectifier PCB Over Half-Wave Rectifier PCB?

Let’s look at the key advantages of full wave rectifier circuit board over half wave type.

  • Full wave rectifier circuit board offers double efficiency. This because it uses both halves, hence the double efficiency.

Nevertheless, half wave rectifier PCBs utilize just one half of input signal.

  • There are very low residual AC ripples in full wave rectifier PCB output, which is the contrast in half wave rectifier circuit boards. You can use a simple filtering component to consistent DC power from the full wave rectifier PCB device.
  • The double efficiency of full wave rectifier PCB also implies higher output power, transformer utilization factor (TUF) and output voltage.

The main disadvantages of full-wave rectifier PCB is that it requires more circuit components and is more expensive.

Why Is Three-Phase Rectifier PCB Better Than Single-Phase Rectifier PCB?

When comparing the 2 types of rectifier PCB, 3-phase rectifier circuit board is ideal for large power system applications.

The reason being that they have the capacity to deliver greater quantities of power and there is no necessity for extra filtering to decrease ripple factor.

Do not need any extra filter to minimize ripple factor.

Accordingly, 3-phase rectifier printed circuit boards are more effectual and exhibit greater TUF.

What Is The Meaning Of Ripple In Rectifier PCB?

Ripple is an essential measurement for establishing the efficiency of rectifier PCB.

Ripple refers to the clarity of output power denoted in a percentage.

You get the percentage ripple by dividing the AC voltage by DC voltage.

This denotes the clarity aspect of determining the rectifier PCB quality.

Which Is The Type Of Rectifier PCB Used In High-Voltage DC Transmission Application?

When basic rectification is not adequate, in instance of varying output voltages, you can employ other types rectifier PCB devices.

You use high-power rectifier PCB, commonly referred to as thyristor circuit boards.

These three phase SCR PCBs are equally able of controlling electrodes and giving the unidirectional current flow.

They entail several kinds of silicon semiconductor elements.

Three Phase Thyristor PCB

Three Phase Thyristor PCB

How Do You Specify Rectifier PCB To Your Fabricator?

Generally, the primary specifications of rectifier PCB are:

  1. Peak Inverse Voltage (PIV): The maximal voltage the diode is capable of handling if reverse biased.
  2. Peak Current if forward biased.

These two are the most vital rectifier PCB specifications.

The rectifier is entirely useless if it cannot manage the maximum voltage and current needed in a particular rectifier PCB application.

  1. Forward Voltage Drop: The voltage dropped over the diode if forward biased in ordinary functioning. This is vital since the power consumed by forward biased diode is this voltage multiplied by the current.
  2. Reverse Leakage: Current flowing rearwards via the rectifier PCB diodes when you reverse the voltage. However, this specification is less essential in rectifier printed circuit board.
  3. Output DC Current
  4. Output Voltage
  5. Physical Package: There exist several different packages, and you will need to select one that fits your design.

These are only the most fundamental specifications of rectifier PCB; more are based on your printed circuit board design.


What Is The Rectifier PCB Cost?

There is no standard rectifier PCB price since the price vary from one manufacturer to another depending on the various parameters.

Several factors affect the cost of rectifier PCB board including type of material, technical specifications, order quantity, among other variables.

However, the average price of rectifier PCB ranges from USD 1 to 10 per piece. You can always enjoy great discount by placing large order quantities.

How Do You Carry Out Failure Examination In Bridge Rectifier Printed Circuit Board?

Open CircuitFailureEvaluation
Open Ground WireNo direct current voltage outputThe diode current of the bridge rectifier circuitry cannot create a loop hence the PCB cannot function.
A single diode is open.Unidirectional pulsating direct current voltage drop.The negative or positive half cycle of the input AC voltage isn’t rectified into a one-way pulsating DC voltage.
Two diodes having different sides open concurrently.No output voltageNeither the +ve nor –ve half cycle of input AC voltage is rectified to one-way pulsating direct current voltage. Thus, the output DC voltage is 0V.

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For all your questions or inquiry about rectifier PCBs, contact Venture now.

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