YIHUA-302D DC Power Supply

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YIHUA-302D DC power supply is a single output precision DC power supply. Its output voltage and current are continuously adjustable within the rated range. The load current with MA conversion is divided into two grades such as 0-2A and 0-999 mA. The two grades with constant voltage constant current can automatically convert the work mode.

This power supply unit has dual digital display screen to independently display the output voltage and output current. It has a variety of protection functions, for example, current limiting, short circuit protection, over-temperature protection, and the like. Therefore, our power unit can be used for production lines, maintenance, and debugging in factories. Also, it can be applied in laboratories or other places. This YIHUA-302D DC power supply is the essential instrument of the communications industry.

Constant Voltage Constant Current (CV / CC) Principles
YIHUA-302D DC power supply can be automatically converted, when working in the mode of constant voltage constant current. You can determine its status through the comparison between the load current value and the limited current value.

1. Constant Voltage Mode (CV)
The power supply will work in constant voltage mode, if the current value is smaller than the set output limited current value. Then, the front panel constant voltage indicator lights up, and the output voltage will be controlled to be the same as the set value. The current will change as the load changes.

2. Constant Current Mode (CC)
When the current value exceeds the limit value of the output current, the power device will work in the mode of constant current and the front panel constant current indicator will light up. Since the limited output power should not overload, the output current value will be controlled to be no more than the set value. The YIHUA-302D DC power supply will automatically convert to the constant current work status, when the output current is lower than the set value.

Related Names
DC Converter | External Power Supply | Laptop Regulated Power Supply

YIHUA-303D DC Power Supply

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The YIHUA-303D DC power supply is defined as a single output precision DC power device, offering output voltage and current that are continuously adjustable within the rated range. With the MA conversion, its load current can be converted to the 0-3A or 0-999mA output current. The two grades of constant voltage constant current can automatically convert the work mode.

Our power device adopts the dual digital display screen for independently showing the output voltage and output current. It is full-featured with multiple functions, including current limiting, voltage declining, short circuit protection, over-temperature protection, and many more. Consequently, the power unit has a wide range of application. It is the essential instrument utilized in the communications industry. YIHUA-303D DC power supply can be applied for production lines, maintenance, and debugging in factories. Also, it can be used in laboratories and other places.

Constant Voltage Constant Current (CV / CC) Principles
YIHUA-303D DC power supply can be automatically converted, when working in the mode of constant voltage constant current. Its status can be determined through the comparison between the values of load current and limited current.

1. Constant Voltage Mode (CV)
Once the current value is smaller then the set output limited current value, not only will the power unit work in the constant voltage mode, but also the front panel constant voltage indicator will light up. Output voltage of the device will be controlled and kept the same as the set value. The current will change as the load changes.

2. Constant Current Mode (CC)
The power supply device will work in constant current mode, if the current value exceeds the limit value of the output current. At that moment, the front panel constant current indicator will light up. The output current value will be controlled and within the set value. Additionally, the output voltage should be lower than the set point, that’s because the limited output power can not overload. The YIHUA-303D DC power supply will automatically be converted to constant current work status, if its output current is lower than the set value.

Related Names
Multi Voltage DC Power Supply | Laboratory Power Source | Constant Current Power Supply

YIHUA 305D-I/305D-II/305D-III DC Power Supply

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305D DC power supply belongs to the single output precision DC power unit. Its output voltage and output current can be continuously adjusted within the rated range. Because of YH-305D the load current with MA conversion, the output current is divided into two grades such as 0-5A and 0-999mA. This power unit can automatically change the work mode.

YH-PS-305D cannot convert the unit between mA and A, but YH-PSN-305D provides a digital display of the current value, accurate to the mA.

With the dual digital display screen, both output voltage and output current can be independently displayed. 305D DC power supply come with many functions, such as current limiting, voltage declining, short circuit protection, over-temperature protection, and more. As the essential instrument of communications industry, it is widely applied for production lines, maintenance, and debugging in telecom products factories. This device is also commonly found in laboratories and other places.

Constant Voltage Constant Current (CV / CC) Principles
305D DC power supply can be automatically converted in the case of constant voltage constant current working mode. Through the comparison between the values of load current and limited current, you can determine its status.

1. Constant Voltage Mode (CV)
When the current value is smaller than the set output limited current value, the power supply unit will work in constant voltage mode. Under such condition, the constant voltage indicator of front panel will light up, and the output voltage will be controlled to be the same as the set value. The current will change according to the load.

2. Constant Current Mode (CC)
If the current value is greater than the limit value of the output current, the device will work in the mode of constant current. Additionally, the constant current indicator of front panel will light up, while the output current value will be controlled no more than the set value.

Because the limited output power can not overload, the output voltage will be lower than the set point. Once the output current is lower than the set value, the YIHUA-305D DC power supply will automatically be converted to the work status of constant current.

Related Names
Adjustable Power Supply | Voltage Controlled Device | Variable Regulated Power Supply

YIHUA-305DA DC Power Supply

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Features
1. The YIHUA-305DA DC power supply is designed with four digital displays to show the voltage and current value, precisely.
2. Smartly designed, the regulated DC power supply is workable for current adjustment to offer protection to your device.
3. There are three groups of output currents and voltages engineered for the variable DC power supply, satisfying your demand for different operations.
4. Produced from SMT, our adjustable power supply has compact structure and outstanding reliability.
5. For more protection, users can turn off the output and set up the current and voltage.

YIHUA-305DB DC Power Supply

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The YIHUA-305DB DC power supply is engineered with four digital displays to indicate the accurate voltage and current value. The output current can be adjusted to offer more protection to your device. Produced from surface mount technology, our programmable power supply is also characterized by the following advantages:

1. This stabilized DC power source is particularly offered with three groups of positive and negative current and voltage output connectors, which can be applied simultaneously, as long as the total current is included in the rated range.
2. Users can turn off the output, and set the output current and voltage to make sure the safe operation of your device.
3. There are 60 groups of current and voltage values stored in the multi-output DC power supply. Therefore, you can set up the desired value, conveniently.
4. It is available to control the bench top power supply through the operation on computer. Besides, computer programming is also feasible with this equipment.
5. The current can be regulated through the operation on the knob.

YIHUA-3005D Switching Power Supply

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The 3005D switching power supply is a device used to transmit power supply from a main power (DC or AC) to a DC load. It also changes the voltage and current characteristics. The switched mode power supply primarily pairs with soldering stations and soldering irons, and is widely used in laboratories, educational institutions, production lines and more.

Features
1. The YIHUA 3005D 30V/5A is our newly launched digital controlled power supply. It weighs half as much as our classic power supply device, allowing for an easier transportation and significant cost savings.
2. With an automatic adjustment for current and voltage range, it features a more reliable performance and longer service life in comparison to traditional potentiometer controllers.
3. Functions can be locked during operation to prevent any misoperations.
4. With a rated output of 4.2V 2A / 19V 5A (press to display) and phone radio frequency detection function, it is great for smartphone or laptop repair.
5. Users can store up to 3 sets of commonly used parameters for fast retrieval in the future.
6. Output memory function: If the memory function is on, it automatically memorizes the output conditions and will use the same output for the next use. If the memory function is not on, manual adjustment of the output range is needed every time the equipment turns on. The power supply device will only function when powered on and the output button has been pressed.

YIHUA 3005D-II Dual Adjustable DC Power Supply

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The 3005D-II power supply is a dual channel DC power supply, and is designed to provide a continuously adjustable current and voltage. The built in, large LED backlit display and rotary switch allows for an easier and clearer operation. The two channels operate individually, and are designed with a track and hold circuit on both series or parallel circuits. This particular power supply has 3 output rates to choose from: 2.5V, 3.3V, or 5V.

This equipment features a streamlined appearance and exceptional performance, making it popular in laboratories, educational institutions, electronic component production, communication industries and more.

1-PRA Parallel Circuit
2-IND Series Circuit
3-SED Individual
4-Power Button

• Three output modes to choose from according to different working conditions. Choice is made using a simple toggle switch.
  A. Dual channel individual operation: This means this power supply has two sets of 30V/5A output voltage and current.
  B. IND series circuit tracking mode: This means this power supply has a maximum of 60V output voltage and 5A output current.
  C. PRA parallel circuit tracking mode: This means this power supply has a maximum of 30V output voltage and 10A output current.
• This electronic power supply has 3 sets of rated output modes of 2.5V/3.3V/5V for customers to choose from using a simple switch on the control panel.
• The current accuracy can be controlled within 0.001A.
• The internal voltage transformer is made of high quality copper and built with a fan for heat dissipation when the equipment temperature reaches 45 ℃ in order to prolong its service life.