Leading DC Power Supply Manufacturers

Direct Current, or DC, is current that only flows in one direction. Unlike alternating current (AC), which changes path 50 or 60 times every second based on the frequency of the supply, current in DC circuits only flows in one direction. The electrons that make up the electric charge move from the minor level potential to the point of strong potential as the direct current flows. They switch from the negative to the positive terminal, and the resulting current flows the other way. Read More…

DC Power Supplies DC power supplies operate by receiving an input power and then outputting the required form of DC power. There are a variety of types of DC power supplies such as linear power supplies, switching power supplies, DC/DC converters and high voltage power supplies.

TDK-Lambda Americas designs and manufactures a wide range of AC-DC and DC-DC power supplies and EMI Filters for Medical, Telecom, Industrial, Datacom, and Test & Measurement applications worldwide. The company has been a major provider of power solutions since 1948. TDK-Lambda is a subsidiary of the TDK Corporation, a leading global electronics company.

TDK-Lambda Americas Inc. $$$

Our company offers a variety of standard and custom power supplies. These items are great for a wide range of applications. If you have any special requests then please let our representatives know. If you ever run into any questions or issues then our engineers are available to assist you. There is no project too challenging for our teams! Give us a call today!

Triad Magnetics $$$

For 4 decades, Acopian Power Supplies has specialized in long lasting power supplies (0 volts – 30000 V). We offer AC power supplies, DC power supplies, AC to DC converters, uninterruptible power supply (UPS), AC to DC power supplies & high voltage power supplies. With quality customer service & technical support, we have thousands of power supplies for thousands of applications.

Acopian Power Supplies $$$

APS are specialists in power conversion and the manufacture of high performance power systems. Products include power converters and inverters; motor drives and brakes; battery chargers; AC and DC power supplies; driver circuits and more. Custom and standard power systems are available.

Applied Power Systems, Inc. $$$

At Quail Electronics, we are your power cord specialists. Our power supplies consist of green dot cords, high voltage cords, North American and international cords, specialty cords, plus adapters, plugs and strips.

Quail Electronics, Inc. $$$
Get Your Company Listed
placeholder image TDK-Lambda Americas Inc. Triad Magnetics Acopian Power Supplies Applied Power Systems, Inc. Quail Electronics, Inc.

DC Waveform

Like AC, the current flow in DC circuits is unidirectional and does not change direction frequently. DC has a sine wave-like waveform. As a result, the voltage stays constant over time, as shown below.

dc sine wave

Generating DC

DC can be generated in the following ways:

  1. Direct current can be generated using an AC generator with a "commutator" component.
  2. Use of a "rectifier," a device that transforms AC to DC.
  3. Batteries supply direct current (DC), produced by a chemical inside the battery.

DC Generator

An electrical device called a DC generator's main job is to turn mechanical energy into electrical energy. According to the electromagnetic induction theory of Faraday's Laws, an E.M.F. will be produced when the conductor cuts the magnetic flux. This electromotive force may result in a current flow when the conducting circuit is closed.

a dc generator

How a DC Generator Works

According to Faraday's law of electromagnetic induction, an electromagnetic field (E.M.F.) is induced in a current-carrying conductor when put in a changing magnetic field. Fleming's right-hand rule states that as the conductor's direction of motion alters, so does the induced E.M.F. current. For example, imagine an armature revolving counterclockwise and a conductor traveling upward from the left.

The conductor will move downward when the armature has completed half its rotation. As a result, each armature's current will flow in an alternate direction. On the other hand, a split ring commutator reverses the interconnections of the rotor conductors in response to a current reversal. As a result, the terminals experience a unidirectional current.

Main Parts of a DC Generator

  • Stator: The stator's primary job is to create magnetic fields in which the coil can spin. Two magnets facing each other with opposing polarity make up a stator. These magnets are positioned such that they will fit in the rotor's area.
  • Laminations: A DC machine's rotor comprises slotted iron laminations that are layered to form a tubular armature core. The lamination aims to reduce the loss brought on by eddy currents.
  • Transformer Windings: Armature windings are wired in series or parallel in a closed circuit to increase the total output current.
  • Yoke: Yoke refers to the DC generator's outside frame. It is constructed of steel or cast iron. It offers the mechanical force required to carry the magnetic flux generated by the poles.

DC Applications

DC is mainly used in portable electronic devices that largely rely on battery power, such as notebook computers and cell phones. These electronic devices frequently contain several tiny circuits, each of which has a different voltage demand from the one provided by the battery or an external source.

devices that use dc power supply

The battery voltage also decreases as stored energy is used up. Switching to DC power supplies provides a technique to increase the voltage from a battery voltage that has been partially reduced, saving space. This would use up space to accomplish the same task with multiple batteries.

Power optimizers are DC/DC supplies that take advantage of energy harvesting from wind generators and PV systems. For powers greater than a few watts, transformers used for voltage conversion at a main electrical frequency range of 50 to 60 Hz ought to be heavy and larger.

Comparing the complex circuitry to a basic main supply transformer wiring of the same output, the complex circuitry is more affordable and highly efficient. DC/DC power supplies are often used for Micro-grid applications when using various voltage levels.

Advantages of DC Power Supply

  • It provides ways to increase voltage using partly reduced cell voltage.
  • This power source is accessible as a full combination circuit unit and requires only a few additional parts.
  • To control voltage, DC choppers are employed, which are highly efficient.
  • The power output for PV systems is intended to be used as efficiently as possible, making the DC power supply very efficient.
  • Depending on the condition of the barrier, separated DC converters have additional power transformers.
  • The output of the isolated converter is classified as either negative or positive.

Choosing the Right DC Power Supply Company

To make sure you have the most constructive outcome when purchasing DC Power Supplies from a DC Power Supply Company, it is important to compare at least 4 Companies using our DC Power Supply directory. Each DC Power Supply Company has a business profile page that highlights their areas of experience and capabilities and a contact form to directly communicate with the manufacturer for more information or request a quote. Review each DC Power Supply business website using our proprietary website previewer to get an idea of what each business specializes in, and then use our simple RFQ form to contact multiple DC Power Supply companies with the same quote.

DC Power Supply Informational Video

 

Power Supplies Power Pages

AC DC Power Supply

AC DC Power Supply

Power supplies are electrical circuits and devices that are designed to convert mains power or electricity from any electric source to specific values of voltage and current for the target device...

AC Power Supplies

AC Power Supplies

An AC power supply is a type of power supply used to supply alternating current (AC) power to a load. The power input may be in an AC or DC form. The power supplied from wall outlets (mains supply) and...

DC DC Power Supply

DC DC Power Supply

A DC DC power supply (also known as DC DC Converter) is a kind of DC power supply that uses DC voltage as input instead of AC/DC power supplies that rely on AC mains supply voltage as an input...

DC Power Supply

DC Power Supply

A DC power supply is a type of power supply that gives direct current (DC) voltage to power a device. Because DC power supply is commonly used on an engineer‘s or technician‘s bench for a ton of power tests...

EMI Filters

EMI Filters

An electromagnetic interference or EMI Filter is an electrical device or circuit that filters specific unwanted frequencies in power lines or offending frequencies that are detrimental to a system. They receive AC or main power signal input, modify it, and release output that has noise removed...

High Voltage Power Supply

High Voltage Power Supply

By definition a power supply is a device that is designed to supply electric power to an electrical load. An electrical load refers to an electrical device that uses up electric power. Such a device can be anything from...

Programmable Power Supplies

Programmable Power Supply

A programmable power supply is a method for controlling output voltage using an analog or digitally controlled signal using a keypad or rotary switch from the front panel of the power supply. They control voltage output, current, and, with an AC power supply...

Power Cords

Power Cords

A power cord is an electrical component used for connecting appliances to an electrical utility or power supply. It is made from an insulated electrical cable with one or both ends molded with connectors...

Electronic Connectors

Electronic Connectors

Electronic connectors are devices that join electronic circuits. They are used in assembling, installing, and supplying power to electrical devices. Connectors are an important component of every electronic equipment used in...

Electric Switches

Electric Switches

An electric switch is a device – usually electromechanical – that is used to open and close an electric circuit. This disables and enables the flow of electric current, respectively...

AC Power Cord

AC Power Cord

An AC power cord is a detachable way of providing an alternating current of electric energy from a mains power supply to an electrical appliance or equipment. Serving industries like...

Push Button Switches

Push Button Switches

Push button switches are electrical actuators that, when pressed, either close or open the electrical circuits to which they are attached. They are capable of controlling a wide range of electronic gadgets...

Power Products

Featured Industries