Rating of the best laboratory power supplies for 2020

What to look for when choosing a laboratory power supply? For the purity of the output voltage. There is no single parameter requirement. Much depends on the scope of the device. LBPs began to be produced back in Soviet times, and to this day they enjoy well-deserved popularity due to their reliability and efficiency.

general description

The word "laboratory" is used for a reason, since their main purpose is to help in laboratories. They "live" there permanently and are not even transported for repairs in outside premises. Experts do not recommend using the device outdoors or in a car. Laboratory also implies adjusting parameters and accurate setting of indicators.

The main division of products is as follows: imported and domestically produced. The first option, usually of Chinese origin, is often used in service centers that repair equipment that has become unusable. The main disadvantage is the lack of credentials, a positive point - affordable. They do not lead the rating of quality goods, but reliability control is still present in any production. The best models are comfortable enough and have short circuit protection.

Russian-made products have certificates of conformity, are regularly checked, which leads to an increase in the cost of their use. These PSUs can tolerate a slight error, are distinguished by their reliability and efficiency of operation, as well as a long service life.

What are

In order to avoid mistakes when choosing, it is necessary to clearly and clearly understand the essence of the definitions and see the difference between them. Let's figure out what is the difference between laboratory and conventional power supplies, and what a power supply is in general:

1. A simple power supply is an electronic device used to generate a predetermined value in one or more channels. There is no display and control unit. A typical representative is a power supply unit for a low-power computer.
2. The laboratory power supply unit regularly generates a stream through one or several channels. Equipped with a display, protection against misuse, controls, and other useful functionality.

Laboratory power supply is the same as laboratory power supply.

The types of power supplies are as follows:

• primary;
• secondary.

Representatives of the first option carry out the conversion of non-electrical forms of energy into electrical energy. These include batteries, solar panels, wind turbines, and more.Secondary power supplies are used to convert one type of electricity to another in order to provide the desired parameters of frequency, ripple, and the like. This group includes:

• AC / DC converter;
• DC / DC converter;
• transformers;
• flow stabilizers;
• LBP.

With regard to laboratory power supplies, they differ in characteristics and varieties. Let's dwell on this issue in more detail:

Differences	Description
By the principle of functioning	Impulse and linear.
Working ranges	Availability of automatic power limitation or fixed.
Number of channels	Multi-channel and single-channel.
Availability of protection	With the function of protection against overheating, surges, overcurrent and so on.
Power	Significant power or standard.
Channel isolation methods	Uninsulated or galvanically isolated.
Output signal	AC or DC voltage and current.
Management methods	Software along with manual or just manual.
Additional functionality	The presence of a built-in precision multimeter brings the flows in the connection wires to the required level, changes the output of set values, activates the output by a timer, the presence of a built-in electronic load, and so on.
Reliability	Thoughtful appearance, high quality of the element base, careful final control.

Criterias of choice

Which company is better to buy depends on the scope of the tool. Popular models can be used by radio amateurs for daily tasks as well as for high-precision measurements and tests in industrial plants. The products are used where there is radio engineering and electronics, that is, everywhere. Main directions of use:

1. Control over the quality of radio engineering elements.
2. Testing of electronic units and circuits.
3. Testing of instrumentation.
4. During the production and subsequent repair of radio equipment.
5. In the process of designing, designing and testing electronic equipment.
6. Applications as a power source.
7. Use in the educational process when conducting laboratory research.
8. During the simulation of physical and electrical processes.
9. In order to emulate the functioning of certain equipment.

Depending on the need arisen, the question arises, which device is better to buy and from which manufacturer. How to choose not to be mistaken? It is advisable to preliminarily study the overview of the proposed models, read the reviews, clarify in relation to the new products being released. According to buyers, the material of manufacture is of no small importance. The service life of the device and its efficiency directly depend on this. You can see the rating of popular models, both inexpensive and at a significant cost.

Selection features

In the selection process, you should pay attention to the following characteristics:

• working parameters;
• sizes;
• number and power of output channels;
• protective functions or lack thereof;
• advantages and disadvantages;
• average price of a product.

In order for the device to perform the tasks assigned to it, it is necessary to pay special attention to the technical characteristics:

1. Unstable indicator in the supply network if there is a change in alternating current.
2. Noise indicator during operation.
3. The time interval during the transition to the initial characteristics when the consumer current changes.
4. The quality of the measured parameters and the presence of an error.
5. Resolution - the ability to set the step of setting the output indicators.
6. Management interface.
7. How losses are compensated if connected to a four-wire circuit to control the elements that regulate the output flow using test leads to compensate for the loss in the mains.

The best option is the presence of minimal noise, precise and coarse adjustment, increased possibilities when connecting.

Where to buy depends on the preference of the professional. You can order directly from China using Ali Express, or visit a specialty store and purchase your favorite set. There is an option to order the product online in the online store.

There are also craftsmen who are able to assemble the LBP with their own hands at home. The main thing is to choose the right scheme. You can independently make a simple linear power supply with flow regulation from 1.3 to 30 V, with regulation from 0 to 5 A. You will get an almost universal device that will operate in stabilization mode. If necessary, you can power the sensitive circuit or charge the battery. How to do this or that operation, the step-by-step instructions on the Internet will tell you.

Rating of the best laboratory power supplies for 2020

Budget models

Element 1502 DD

Inexpensive Chinese goods can be seen not only in scientific institutions, but also in the arsenal of home craftsmen who, with their help, test devices consumed by non-standard voltages. Refers to the category of full-fledged single-channel power supplies. Able to convert streams in the network with an error of up to 1/100 of a fraction. It is popular with those who do not need an expensive and rather complicated device for work.

The average cost is 1,500 rubles.

• easy to operate;
• inexpensive;
• quality;
• a good option for repairing simple electrical appliances.

• not visible.

Korad KA 3005 D (30 V, 5 A)

The main difference is the presence of digital control. Able to remember several settings. The presence of four-digit indicators allows you to set the current and voltage with particular accuracy. The measuring device is especially popular among professionals and amateurs of radio electronics. It can be purchased in specialized stores in Russia or ordered from China. In the latter case, the price will increase by an average of 1000 rubles, including delivery.

The manufacturer offers products at a price of 5,000 rubles.

• high power;
• advanced digital control;
• ease of use;
• high-precision;
• reliable;
• functional.

• significant were not identified.

PS - 1501 A

A Chinese manufacturer produces products with dial gauges. The lack of a liquid crystal display confuses few people, so the product has found application in various fields. Arrow indicators perform the following tasks:

• the first measures the voltage from 0 to 15;
• the second is amperes from 1 to 3.

The interaction is carried out through a single resistor located on the front panel. The limiting ripple indicator is 3 mV. The type of device is single-channel, it is characterized by maximum accuracy, however, it is not possible to display the error up to 1/1000 of a volt fraction. Mainly used by DIYers and repair technicians in workshops where electrical goods are repaired and tested.

The average price is 1150 rubles.

• inexpensive;
• it is operated quite simply;
• elementary connection diagram;
• lack of complex buttons;
• high accuracy;
• reliability;
• durability.

• unable to take perfect measurements.

LW - K - 3010 D

Powerful switching laboratory power supply with an increased rate of 32 V, instead of the standard 30 V. As for the current, its characteristics are completely the same. Has an analog setting of the output parameters. The indicator can be set to the nearest 0.1 V using a multi-turn variable.With regard to the magnitude of the stabilization output current, its setting takes place in a rough form, by using a conventional variable.

Dealers offer products at a cost of 2800 rubles.

• high power output;
• vertical type of construction;
• compactness;
• a good combination of price and quality;
• reliability;
• long service life.

• significant were not identified.

YA XUN PS - 1502 DD

The Chinese company has launched the production of a high-quality device at an insignificant cost, which is widely used in service centers for the repair of cell phones. Despite the name "laboratory unit", it is not suitable for solving complex problems. It belongs to the category of single-channel instruments with a voltage range of up to 15 watts and from 1 to 3 amperes. Ripple indicator - 3 units. The parameters are entered using four resistors. The presence of fine tuning makes it possible to output values ​​of four characters to the channel.

The products are sold at a price of 1250 rubles.

• elementary connection diagram;
• ease of use;
• affordable cost;
• high quality;
• reliability;
• durability.

• the brand is not promoted.

Models of the middle price segment

Wanptek NPS 306 W (30 V, 6 A), NPS 1203 W (1200 V, 3 A)

The company has established the production of eight units and various combinations of voltage and current. Some representatives can issue flows up to 120 V, unlike their competitors, whose indicators reach a maximum of 100 V. A distinctive feature of the product is its small dimensions, which makes it possible to save a lot of free work space on the table. A three- or four-digit display is provided. Equipped with power indicator.

How much does the item cost? In the range from 3500 to 5500 rubles.

• small-sized design;
• comfortable;
• easy to use;
• high quality;
• with a long service life.

• significant were not identified.

Yaogong 1502 DD

A distinctive feature is the presence of a heavy copper transformer inside the case, which reduces the ripple rate. The device weighs 3.5 kg, although it is included in the TOP of the best products in this category. Only the quality of the current and voltage of the source allows it to be called laboratory. The main technical indicators are as follows:

• ripple current - up to 3 mA RMS;
• voltage ripple - up to 1 mA RMS;
• the accuracy of the set values ​​is 0.01%;
• voltage setting - from 0 to 15 V;
• setting the current - from 0 to 2 A.

The complete product can be purchased at a price of 2540 rubles.

• value for money;
• equipped with short circuit protection;
• digital indicators are large;
• slight ripple;
• there are contacts for a clamp and a plug.

• minimum current and voltage range;
• voltage adjustment is carried out by means of three knobs;
• significant weight, which implies an increase in the cost of services for the delivery of goods to their destination.

Mastech HY 1803 D

The Chinese company produces compact forms - factors, which is their main advantage. For installation, do not free up a lot of free space on your desktop. The model is compact and does not take up much space. In addition to the insignificant dimensions, it is worth paying attention to the connection diagram. A dual channel device is able to output power up to 1/1000 of a fraction. An excellent indicator for such a tool.

All channels are equipped with liquid crystal displays. Any adjustment is carried out using one resistor. Every master is able to operate, without even studying the instructions that are attached in the kit and set out in Russian.

The price of the product is 3500 rubles.

• convenient vertical form factor;
• ease of connection;
• lack of a huge number of buttons;
• easy to operate;
• the price is worthy of attention;
• long service life;
• functionality.

• significant were not identified.

Longwei PS - 302 DF (30 B, 2 A), PS 1003 DF (100 B, 3 A)

A global manufacturer is presenting advanced products in 10 current and voltage combinations. Equipped with analog control, but improved: regulators for fine and coarse adjustment of current and voltage are installed.

The average cost is from 5300 to 8000 rubles, depending on the set.

• improved indication;
• equipping with four-digit indicators;
• availability of USB 5V 2A output with the ability to recharge mobile phones;
• ease of use;
• durability;
• reliability;
• high quality of work.

• significant are missing.

Gophert CPS - 3205 II (NPS - 1601)

The model differs from its counterparts in the absence of an internal transformer, due to which it is controlled using buttons, which is not very convenient. This design feature is for the sake of those who prefer to purchase budget products. However, the case is of high quality and reliability due to the presence of cooling fins.

The price of the device is 3810 rubles.

• the presence of a contactor for terminals and plugs;
• protected against short circuit;
• insignificant voltage ripple;
• inexpensive;
• the kit includes a set of plugs;
• the presence of heat sink fins on the body.

• no separate grounding connector;
• controlled by buttons.

Gophert CPS - 3232 (32V, 32A)

Professional advice boils down to the fact that this model is the ultimate dream. The total power is over a kilowatt! An impressively flat design makes it easy to mount the device on a hinged shelf on top of the desktop, without compromising on space. The impulsive apparatus weighs only 2.2 kg, despite its considerable power. The presence of digital control with some quirks makes it a little difficult to operate.

The average unit price is 10,000 rubles.

• too powerful;
• reliable;
• long service life;
• high precision.

• "Tricky" management;
• significant cost;
• increased noise level during fan operation.

Long Wei PS - 3010 DF

The model features an internal transformer to reduce the noise level. The presence of additional options, such as a USB connector and a display that displays power consumption data, implies an increase in the cost of production and affects its final cost. The manufacturer exposes the devices for sale at a price of 5720 rubles.

• equipped with a convenient handle for transportation;
• slight ripple;
• value for money;
• large digital indicators;
• additional equipment in the form of a USB connector;
• contacts for clamp and plug are provided;
• installed short circuit protection;
• reliability;
• durability;
• high build quality.

• substantial cost.

Long Wei LW - K 3010 D

This LBP is considered the best option taking into account the price and quality, as well as dimensions. Made in a vertical form factor. It differs in the minimum number of devices for adjustment: a power button resembling a handle, in the amount of one piece. Current limiting and voltage regulation are carried out using two knobs. The efficiency indicator is at the level of 85%.

The average price is 2760 rubles.

• convenient dimensions;
• inexpensive;
• quality;
• functional;
• reliable;
• long service life;
• there is short circuit protection;
• the presence of contacts for the plug and clamp.

• no current limiting graduation.

Premium models

Masters 325 D

High quality products are made by a Chinese manufacturer. It is considered a complete laboratory power supply. The main advantage is a large number of fine settings and the ability to find out information about the input and output voltage.The high-quality digital display allows high-quality adjustments to the values ​​up to 1 / 100th.

The product can be purchased at a price of 6,700 rubles.

• functionality;
• high accuracy;
• ease of use;
• there are additional settings;
• high quality and reliability;
• the ability to record information in 500 memory cells;
• long service life.

• significant cost;
• single channel device;
• complex connection diagram;
• a significant number of settings.

ITECH IT 7300

The products belong to the category of constant sources of alternating voltage and current. Allows you to flexibly control the shape and amplitude of the output signals. Able to test both manually and using software control. Moreover, the operating modes do not play a big role. High accuracy of readings is possible even with voltage surges and dips, frequency drift, and so on.

The cost of the device ranges from 27,000 to 39,000 rubles, depending on the configuration.

• the presence of a built-in power meter allows you to save money on the purchase of an additional device;
• supports three devices via the system bus;
• built-in GPIB;
• reliable;
• durable;
• high-quality assembly.

• significant were not identified.

Tektronix PWS 4000

When the need arises to supply power to low-noise and highly sensitive circuits (DAC, ADC, sensors and audio devices), they resort to transformer laboratory power supplies with linear stabilization of the output voltage. Tektronix has done an excellent job of delivering the best-in-class power supply. The devices are able to provide a noteworthy level of ripple and noise at an output voltage of no more than 1 mV RMS.

The cost of the devices is significant - from 85,000 to 111,000 rubles.

• combinations of current and output voltage are possible;
• highly efficient;
• quality work;
• durable;
• complete with cord and cable;
• overvoltage protection circuit;
• able to control the maximum voltage limit;
• does not make it possible to reconfigure the program during the test;
• there is a USB - interface for remote programming;
• stabilization is linear.

• not identified.

Korad KA 3305 P

The three-channel device is almost entirely metal, including radiators and transformers. Weight is 9.4 kg. One channel is fixed, with a voltage output of 5 V at a current of 3 A. The remaining two channels are of the regulated type and operate in the range from 0 to 30 V and a current from 0 to 5 A. The latter can operate both independently and in parallel or in series , depending on the set mode.

The power supply unit is equipped with a USB interface for connection to a computer. Able to remember several settings. The product is sold in specialized stores at a price of 15,000 rubles.

• easy to use;
• durable;
• reliable;
• high-quality assembly;
• the price and technical characteristics are optimal.

• significant are not established.

UNI - T UTP 3303

If you want to become the owner of a serious device - stop your choice on this model. The dual-channel power supply is designed to simplify the complex repair of power supplies, smartphones and motherboards, in case it becomes necessary to supply two independent voltages to the board. When using only one channel, the second can be used as charging for another device using a set of adapters.

The average price of products is 17145 rubles.

• the presence of an additional output 5 V 3 A;
• equipped with a contact for clamp and plug;
• insignificant voltage ripple;
• a budget option;
• there is protection against overvoltage, polarity reversal and short circuit;
• long service life;
• high quality material of workmanship.

• significant dimensions;
• great weight.

Conclusion

Repair technicians of radio equipment and electronic equipment know how necessary it is to have a laboratory power supply in their arsenal - a special electronic device, thanks to which current and voltage are regulated.

It is a box equipped with a screen, indicators, buttons, protective functions, regulation potentiometers and additional functionality. Quite an important component in laboratory research, when it is necessary to obtain an accurate and high-quality characteristic of the tests performed.

In most cases, products of Chinese origin or Russian companies are presented on store shelves. It differs not only in price, but also in size, weight, technical characteristics, material of manufacture, reliability and durability. Everyone has their own selection criteria, depending on the scope of use of this tool and the financial capabilities of the buyer.