The electronic load verifying the LED driver not only has the functions of a general electronic load (CC, CR, CV, CP), but also must be able to simulate the load characteristics of the LED, set the forward bias (Vd) and the on-resistance ( Rd), etc. In addition, the built-in dimming control signal output is convenient for the PWM dimming test of the LED driver.

The dedicated electronic loads that GW Instek supports for LED driver testing are as follows:

• Must be installed on  3302G mainframe [single channel], 3305G [two channels] or 3300G [four channels], and the mainframe has 150 sets of store/recall memory
• 341G LED DC Electronic Load Simulator 300V, 24A, 300W
• 3342G LED DC Electronic Load Simulator 500V, 12A, 300W
• 3343G LED DC Electronic Load Simulator 500V, 24A, 300W
• 3345G LED DC Electronic Load Simulator 120V, 4A, 150W
• 3346G LED DC Electronic Load Simulator 120V, 12A, 300W
• 33401G LED DC Electronic Load Simulator 500V, 6A, 150W*2
• 33402G LED DC Electronic Load Simulator 120V, 2A, 75Wx2
• 33403G LED DC Electronic Load Simulator 120V, 6A, 150Wx2

• The power input dimming frequency of 3345G & 33402G can reach 25KHz, which is the fastest and widest bandwidth electronic load in the market
• The dimming control output of 3345G & 33402G is DC~10KHz (other models are DC~1kHz)

Single phase 220V (B type)

3kW model

Terminal rated voltage and current: 400V, 41A

Locking screw: M4

Locking terminal restrictions: inner diameter greater than 4mm, outer diameter less than 9mm

Part No.: 39BT-00301301 (BLOCK TERMINAL 0168-2303, 300V, 30A ,3P ,RoHS)

4.5kW, 6kW models

Terminal rated voltage and current: 1000V, 76A

Locking screw: M5

Locking terminal restrictions: inner diameter greater than 5mm, outer diameter less than 13mm

Part No.: 39BT-00301401 (BLOCK TERMINAL 0168-4103,600V,115A ,3P ,RoHS)

Three-phase 220V (C type)

4.5W, 6kW models

Terminal rated voltage and current: 1000V, 76A

Locking screw: M5

Locking terminal restrictions: inner diameter greater than 5mm, outer diameter less than 13mm

Part No: 39BT-00401501 (BLOCK TERMINAL 0168-4104, 600V, 115A ,4P ,RoHS)

Three-phase 400V (D type)

4.5W, 6kW models

Terminal rated voltage and current: 1000V, 76A

Locking screw: M5

Locking terminal restrictions: inner diameter greater than 5mm, outer diameter less than 13mm

Part No.: 39BT-00500701 (BLOCK TERMINAL 0168-4105, 600V, 115A ,5P ,RoHS)

For other details, please refer to the link below:

https://paper.dropbox.com/doc/PSU-3KW6KW-AC-input-terminal-specification-rfm3pTQd7P6jo3BDIYBi0

The launch of GSM-20H10 is to provide users with a more economical choice on the entry-level Source Measure Unit.

Therefore, we also take into account users’ requirements to replace the instrument. Therefore, all the commands on Keithley 2400 can be recognized and executes by GSM-20H10.

But there are two special cases users must consider:

1. GSM-20H10 is much faster than Keithley 2400 in terms of the speed of CPU processing. When the test system is very sensitive or strict to command sequence, time adjustment on commands may be necessary.
2. Keithley uses some unpublished commands in the software, which limit the direct replacement of GSM20H10.

Line regulation and load regulation are two important specifications that are used to measure the performance of voltage regulators.

Line regulation refers to the ability of a voltage regulator to maintain a constant output voltage, despite variations in the input voltage or the supply voltage. In other words, it measures how well the regulator can regulate the output voltage when the input voltage is changing. Line regulation is typically expressed as a percentage of the output voltage per unit change in the input voltage. For example, a regulator with a line regulation specification of 0.1% per volt means that for every 1 volt change in the input voltage, the output voltage will change by no more than 0.1%.

Load regulation, on the other hand, refers to the ability of a voltage regulator to maintain a constant output voltage, despite changes in the load current. In other words, it measures how well the regulator can regulate the output voltage when the load is changing. Load regulation is typically expressed as a percentage of the output voltage per unit change in the load current. For example, a regulator with a load regulation specification of 0.5% per amp means that for every 1 amp change in the load current, the output voltage will change by no more than 0.5%.

Both line and load regulation are important specifications for voltage regulators, as they can affect the stability and reliability of electronic circuits that rely on a constant and stable voltage supply.

Read More: DC Power Supply

#DC Power Supplies #line Regulation #Load Regulation

In theory, it is possible to run a house on DC (direct current) power. However, it would require a significant overhaul of the existing electrical infrastructure in the house.

Most homes are wired for AC (alternating current) power, which means that all the electrical appliances and devices in the house are designed to run on AC power. In order to run a house on DC power, all of the electrical wiring and devices would need to be modified to accept DC power.

Additionally, most of the electrical energy produced by power stations is transmitted as AC power, so if you wanted to power your house using DC power, you would need to generate your own DC power using solar panels or other alternative energy sources. This would require a significant investment in equipment and installation costs.

Overall, while it is technically possible to run a house on DC power, it would require a significant amount of work and investment to make the switch from AC power to DC power.

Read More: www.gwinstek.com/en-US/products/layer/DC_Power_Supply

#DC Power Supplies #AC Power Supplies

AC (alternating current) and DC (direct current) are two different types of electrical power supplies.

AC power supply provides electrical energy that periodically changes direction, meaning that the voltage and current regularly reverses direction. This type of power supply is commonly used in homes and buildings to power electrical devices, as well as in the distribution of electrical power over long distances. AC power is usually generated by electric power stations using rotating machines such as turbines or generators.

DC power supply provides electrical energy that flows in one direction, meaning that the voltage and current remain constant in one direction. This type of power supply is used in many electronic devices and systems, as well as in transportation, such as electric cars, buses, and trains. DC power can be obtained from batteries, solar panels, or DC power supplies.

The main difference between AC and DC power is the direction and frequency of the voltage and current. While AC power periodically changes direction, DC power remains constant in one direction. AC power is more commonly used for power transmission, while DC power is more commonly used for electronic devices and systems.

Read More: www.gwinstek.com/en-US/products/layer/DC_Power_Supply

#DC Power Supplies #AC Power Supplies

DC (direct current) power is used in a variety of applications, including:

• Electronics: Many electronic devices, such as computers, smartphones, and televisions, require DC power to operate. DC power supplies are often used to convert AC (alternating current) power from the wall outlet to DC power that can be used by electronic devices.
• Transportation: Electric vehicles, such as cars, buses, and trains, rely on DC power to run their electric motors.
• Renewable energy: Solar panels and wind turbines generate DC power, which is converted to AC power using inverters before it can be used to power homes or businesses.
• Industrial machinery: Many industrial machines, such as electric motors and robotics, require DC power to operate.
• Telecommunications: Telecommunications equipment, such as cell towers and base stations, often run on DC power.

Overall, DC power is used in a wide range of applications where a steady, reliable source of power is required.

Read More: www.gwinstek.com/en-US/products/layer/DC_Power_Supply

#DC Power Supplies

The measurement function of the ASR series AC/DC power supply can be performed through the free software to perform data logging (Data Logger)

The software diagram is as follows

Figure 1 Data logging of ASR measurement parameters

Figure 2 Harmonic data logging

For free software, please click the link below, file download option, registered members can download for free after login

https://www.gwinstek.com/en-US/products/detail/ASR-3000

Fan is a component that ensures heat dissipation and ensures the normal operation of the power supply.

The PSU series power supply will stop output when there is a fan fail message.

When the fan is in the critical state of failure, the phenomenon of good and bad sometimes causes the failure prompt of Fan Fail indicator to flash.

When your power supply keeps showing Fan Fail prompt, please contact your nearest GW Instek Service Center services@goodwill.com.tw 

Routine maintenance precautions:

1. Avoid dust accumulation in the fan
2. There is a certain cooling distance between the fan and the desktop or wall

The power supply over-voltage protection (OVP) is designed as a DUT protection mechanism to avoid supplying excessive voltage to the device under test (DUT) or circuit under test (DUC).

Three possible overvoltage (OVP) scenarios are provided below.

Scenario 1: Users forget that the overvoltage protection was set for the last project, and the voltage of this test project is higher than the overvoltage protection setting value.

For example: the OVP of the last project was set to 12.5V, the required voltage of this project is 15V, and the set output voltage is higher than the 12.5V of the overvoltage protection, so the power supply starts the protection mechanism to stop the output.

Scenario 2: After connecting the remote compensation, the output of the power supply is higher than the overvoltage protection setting value due to compensation

For example: the working voltage of the circuit is 12V, and the overvoltage protection is set to 12.5V. Due to the excessive loss from wiring, a voltage drop of 0.6V is caused on the wiring, resulting in only 11.4V voltage of the DUT. The power supply starts to compensate, and the compensation reaches 12.5V, the DUT is 11.9V, and the overvoltage setting value of 12.5V is exceeded after compensation, so the power supply starts the protection mechanism to stop the output.

Scenario 3: Due to the inductance of the test lead, at the moment of the power supply switching or the moment of the programmable voltage change, the stray components on the lead cause LC resonance, and the transient voltage during the voltage change exceeds the OVP protection voltage setting value.

For the APS-7000 series, single step time of Sequence or Simulation is 3600 seconds (1 hour).

If your application requires a sequence or a simulation step time of more than 1 hour, you can use the Jump function to achieve it.

In addition to installing the driver for the APS-1102A, your computer must also have NI-VISA installed.