How to Choose a Right DC Power Supply?

A DC Power Supply is a standard piece of test and measurement equipment widely used in areas of education, circuit test, military R&D, etc. to power and tests the circuit system.

 

Types of DC Power Supply

There are many different ways to classify the DC power supply, such as single vs. Multi-channel, Linear vs. Switching, Bipolar vs. Unipolar, programmable vs. nonprogrammable, etc.

Basic points to consider in choosing the DC Power Supply

No matter how to classify the DC power supply, there are some basic points that need to be considered in choosing the right one, including:

• Number of output channels

• The power requirement of the load or circuit

• Safety features such as voltage and current limits to protect the load

• Setting resolution

• Load regulation: which means how well the regulator can maintain its output with a load current change, and usually is measured in millivolts (mV) or as a maximum output voltage.

• Ripple & noise: Noise is any added and unwanted electronic interference, and ripple is the small variation in voltage when AC is transformed into DC. These are typically combined into one measurement.

• Overvoltage protection: Sometimes output voltages can exceed their nominal values and can damage the load. Overvoltage protection is a circuit that shuts down the power supply should the voltage limits be exceeded.

 

To meet the high response, high stability, low ripple, and noise requirement during the electronic test, Suin Instruments has developed several series of Programmable DC Linear Power Supply, including SK33231/33251, SK3323/3325/3503, SK3323J/3325J, SK10000 Series, in which SK3325 can output 32V/5.1A signal in two channels, and can work on serial or parallel mode to increase the voltage or current, with 10mV/1mA resolution, and low ripple and noise.

Pls check the detailed specification on our website or choose other models according to your actual need.

Introduction of Suin SS7406 Frequency Counter/Timer/Analyzer

 Frequency counters are test instruments used in many applications including laboratories, education, and industrial field to measure the frequency and time of signals very accurately. Nowadays high speed and more accurate frequency counters are required by engineers, Suin SS7406 Universal Frequency Counter/Timer/Analyzer comes out in this condition.

Pict 1: SS7406 Front View

 

Main Features:

SS7406 can measure frequency, period, time interval, pulse width, duty cycle, phase difference. Frequency can be tested from 1mHz to 200MHz in two channels. Additionally, several higher frequency options max to 40GHz can be selected in channel 3. 11 digits per second frequency resolution makes it suitable for measurement from short-term phase locked loop jitter to the long-term drift of atomic clocks. 25ps single shot time resolution makes it one of the highest resolution counters in the market.

 

Besides that, SS7406 also can measure frequency ratio, limit, and statistics calculation. This complete measuring function makes it more popular in the market.

 

The standard time base’s nominal frequency is 10MHz. The test can be controlled not only by the internal gate automatically, but also by the external signal triggering. For more stable measurement, there is a high stability crystal oscillator as an optional selection.

 

Advantages:

Unlike conventional counters that only have numeric displays, SS7406 provides live, graphical displays of measurement results. Graphical data is available in two formats: histogram and trendgram. You can select any by your real requirement.

 

Pict 2: Histogram

 

 

Pict 3: Trendgram

 

Meantime, it is designed as 2U instrument case, which can be used not only as a sole benchtop instrument but also in a 19'' equipment cabinet.

New Arrival - Update Version Digital AC Millivolt Meter SM2100 Series

Voltage, current and frequency are the basic three measured parameters in the electrical measurement, of which voltage measurement is very common. As the technology of electronics develops, low voltage measurement becomes more important. Therefore, the millivoltmeter becomes an essential tool. In addition, digital instruments catch users’ fancy because of accurate and convenient reading, higher accuracy, tiny error, higher sensitivity and resolution, and fast measurement speed, so the demand for digital AC millivoltmeter is growing.

The traditional analog voltmeter adopts an average detecting solution, which has a bigger error on the test result, while the current digital multimeter can measure the signal at the millivolt level but is limited by a narrow measurement range.

Considering to above reasons, Suin Instruments adopts an integral amplifier detecting solution to update the new version digital AC millivolt meter SM2100 series, which overcome the defect of the traditional analog voltmeter. Meantime, the instrument applies a 16-bit high-performance CPU and A/D converter and can measure AC voltage 50μVrms to 400Vrms of Sine signal frequencies between 5Hz to 6MHz, which improves the measurement range greatly.

 

Figure 1 – SM2100 Series Working Principle

Dual independent channels are configured on the SM2100 series, thus the measurement for two different signals could be performed at the same time. LED screen with the colorful digits display, clear readings, and better vision, which could display the test result as 3 1/2 digits or 4 1/2 digits simultaneously, and the best solution could reach 0.1μV. Most importantly, the result could also be shown as different units-Vrms, Vpp, dBV, dBm, dB, and W. Ground and Floating setting and maximum undamaged input voltage up to 400Vrms can improve the operation safety greatly.

 

Figure 2- Test result of two channels in five units

CH1: 6MHz, 3mV, CH2: 20Hz, 7V

 

High accuracy, high stability, easy operation, and high safety make the SM2100 series digital AC Millivolt Meter widely used in universities, factories, military units, labs, and scientific institutions, it becomes a necessary basic instrument to measure and test voltage.

 

Figure 3- The test result when input 300V and 100Hz Sine

If users have any questions about the operation, specification, or test plan related to the digital AC millivolt meter, please welcome to contact us according to working time and contact information left on our website. We will do our best to serve you better.

Why is a Power Quality Analyzer So Important?

 

 

A power quality analyzer is a device used to measure electric power signals in order to determine the load’s ability to function properly with that electric power. A power quality analyzer is incredibly helpful, both commercially and in regular, everyday life. Without the correct electric power, electrical equipment may fail prematurely or malfunction.

When do you need a power quality analyzer?

Do you know there’s an electrical issue, but aren’t sure where it is coming from? This happens quite a bit, especially in a large commercial setting. These so-called “mystery disturbances” are upsets to a processor-sensitive equipment operation that don’t seem to correspond to any identifiable source of power disturbance, but are able to be identified with a power quality analyzer. It could be ground loops, lightning, high-speed transients, or even common-mode electrical noise that is the original cause of the problem. If one of these is the problem, you won’t be able to correctly find it without the help of a device. These events occur and are gone in such a brief time frame that they are not able to be identified without the right tools.

Of course, it is quite possible you don’t even know there is a problem. A power quality analyzer may tell you something you didn’t know! This includes that you’re wasting your money spending too much on your monthly electric bill or you are in a dangerous situation.

What can a power quality analyzer do for you?

There are many different factors that contribute to poor quality power. Just because you know a device has an issue doesn’t mean you know what the underlying problem is, or how to fix it. This is where a power quality analyzer comes in. A device like this will be able to track several electrical parameters, which include frequency, AC voltage, and AC current power. Electrical data parameters, which include demand and peak demand, is the term for the actual amount of power that the monitored system uses. This is something you definitely want to know. Peak electrical demand is the maximum amount of electric power that can be used. Most often you will find that the power parameters are measured in watts (W), volt-amperes (VA), and volt-ampere reactive (VAR). Watts are units of electrical power that indicate the rate of energy produced or consumed by an electrical device, while volt-amperes are the current flowing in a circuit multiplied by the voltage of that circuit. This volt-ampere reactive identifies the reactive component of volt-amperes, so they’re very important to know.

 

Which industries need power quality analyzers?

● Manufacturing Industries

Power quality analyzers allow the maintenance managers and operators to take suitable measures to ensure expensive equipment used in manufacturing and process-based operations are safeguarded by means of the right information available and to execute effectively and efficiently.

● Energy Audits

Power quality analyzers allow the property owners or building operators to receive a detailed report on their energy consumption, device efficiencies, and power quality measurements by Metering energy audits. The data provided by the auditors using power quality analyzers will be used for monitoring losses of power and cost allocation.

● Data centers

A power quality analyzer will be used to eradicate challenges that disrupt the effectiveness of systems or critical devices used in data centers and provide a proactive solution to these issues.

● Energy Companies

Appropriate power quality management can be devised by using power quality analyzers to improve power variants and energy efficiencies.

● Telecommunication

The frequent tripping of devices in telecommunication sectors was mostly associated with voltage sags and swells, was further found to increase loads such as short circuits or faults, or by an abrupt reduction in load on a circuit. Thus, a power quality analyzer was found to resolve these issues avoiding costly maintenance of equipment. An optional DC clamp( along with a meter) can be used to check DC parameters in Towers and their healthiness.

● Healthcare

Healthcare sectors use a critical device that is of utmost significance in saving lives, where power quality monitoring devices will ensure the smooth running of devices and protection against unforeseen events that deteriorate the performance.

● Educational Institutions

Power quality analyzers could be used in institutions to monitor and perform in-depth analysis in a controlled setting to rapidly isolate issues, test responses, planning facilities and restructured layouts.

● Commercial Facilities

Power quality analyzers can be used in commercial buildings to maintain daily activities and take proactive actions against damage to critical systems.

 

Where can I find the best power quality analyzer？

 

 

We offer the SA2100 Power Quality Analyzer. SA2100 is a handheld multi-functional device that is designed to measure and analyze single or three-phase power This portable class S device can provide safe, convenient, and accurate measurements for troubleshooting power networks. Please feel free to contact us if you need them.