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This site provides electrical technology theory, photovoltaic and wind electric power systems, and renewable energy systems equipment knowledge, etc.

Use PWM controller to generate charging current/battery memory and controller selection and characteristics

Using PWM controller to generate charging current/Battery memory and controller selection and characteristics

What is Inrush Current and Charge Controller?

What is Inrush Current and Charge Controller?

How much do you know about the system application of inverters?

How much do you know about the system application of inverters?

What is PWM?

What is PWM?

Basic knowledge of series DC circuit
Circuit knowledge

Basic knowledge of series DC circuit

November 6, 2021November 12, 2021 by admin

People often connect ordinary batteries and photovoltaic cells (solar cells) in series to increase the power supply voltage, and resistors in series …

Knowledge of inductors and component testing
Electrical measurement and Ohm's law

Knowledge of inductors and component testing

November 1, 2021November 1, 2021 by admin

(1) InductorThe inductor (see Figure 1 and Figure 2) is an electronic component composed of a wire coil. When current passes through …

Principles and application knowledge of capacitors
Electrical measurement and Ohm's law

Principles and application knowledge of capacitors

October 30, 2021October 30, 2021 by admin

A capacitor is an electronic component with special properties. It can first “store” electrons, and then release them into the circuit to …

Basic knowledge of resistors
Electrical measurement and Ohm's law

Basic knowledge of resistors

October 26, 2021October 26, 2021 by admin

All electrical circuits have resistance. There is resistance to “resist” current in conductors, loads, and other components. There is an electronic component …

How to calculate the power of the power system?
Electrical measurement and Ohm's law

How to calculate the power of the power system?

October 20, 2021October 20, 2021 by admin

The unit of measurement for electrical power is watts (W). Power reflects the rate at which the circuit consumes energy or the …

Diagnosis of fault circuit in electrical system
Electrical measurement and Ohm's law

Diagnosis of fault circuit in electrical system

October 13, 2021October 13, 2021 by admin

Technicians and electricians often need to troubleshoot faulty systems. Two common faults are open circuit and short circuit. Ammeters, voltmeters and ohmmeters …

How to choose the range and Ohm's law for the meter?
Electrical measurement and Ohm's law

How to choose the range and Ohm’s law for the meter?

October 11, 2021October 11, 2021 by admin

â‘ Select the range of the instrumentWhen using an analog voltmeter or analog ammeter, the most accurate reading should be near the middle …

What are ohms and ohmmeters?
Electrical measurement and Ohm's law

What are ohms and ohmmeters?

September 10, 2021September 10, 2021 by admin

In a circuit, the resistance to current is the resistance (R). The unit of measurement of resistance is ohm, which is represented …

What is a power supply, voltage and voltmeter?
Electrical measurement and Ohm's law

What is a power supply, voltage and voltmeter?

September 7, 2021December 16, 2021 by admin

â‘ PowerThere are many kinds of commonly used power supplies, here are 6 kinds:(1) A battery is a direct current (DC) power source …

Circuit principle of renewable energy power system
Electrical measurement and Ohm's law

Circuit principle of renewable energy power system

September 7, 2021September 10, 2021 by admin

In order for the power to work, there must be a completely closed circuit, so that the current flows from the power …

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  • Using PWM controller to generate charging current/Battery memory and controller selection and characteristics
  • What is Inrush Current and Charge Controller?
  • How much do you know about the system application of inverters?
  • What is PWM?
  • How efficient are renewable energy inverters?

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  • Components of solar photovoltaic system
  • Electrical measurement and Ohm's law
  • Inverters, controllers and their applications

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