Electrician: Calculation method of rated current of motor! The old electrician t...

In the work of electric power operators, it is inevitable to contact the motor, and the size of the rated current and working current of the motor directly affe...

Is the interference waveform from probe grounding or channel crosstalk?

When the oscilloscope is used to measure the output signal of the switching power supply, it is found that there is mutual interference (crosstalk) between the ...

How does the booster chip boost the voltage?

In electronic devices, the booster chip is an important semiconductor device used to convert the input voltage to a higher output voltage. Booster chips are wid...

Comparison of advantages and disadvantages of DC brushless motor and DC brushles...

Dc brush motor: fast start, timely braking, smooth speed regulation, simple control, simple structure, cheap price. The point is cheap! The price is cheap! The ...

Summary of drive circuit of brushed DC motor

So far, a variety of driving methods for brushed DC motors have been introduced. As a summary of this series of articles on the drive circuit of the brushed DC ...

Dynamically adjust the appropriate output voltage

The power supply is usually set to a fixed output voltage to power the electrical load. However, some applications require variable supply voltages. For example...

The four main points required for motor drives

According to statistics, in recent years, the annual production of motor motors in the world is about 10 billion units, and its power consumption accounts for a...

Power Management Design Guidelines: Architecture, IC selection criteria

Power management through a certain circuit topology, the different power input into the system to meet the needs of the output voltage. The Power supply directl...

About I2C IO expansion chip finishing

I2C IO expansion, there are mainly 16 and 8 roads, the mainstream is 16 roads, and each is basically compatible. Package TSSOP24, QFN24, SOP24, SSOP24 are avail...

The working principle of LED drive circuit

The working principle of the LED (light-emitting Diode) driver circuit is to control the current and voltage to make the LED work normally and emit Light. LED i...

Working area and working principle of voltage comparator

Voltage comparators are usually composed of integrated op-amps. Different from common op-amp circuits, integrated op-amps in comparators are mostly in open-loop...

Design of DC-DC chip FB divider resistor circuit

In the use of DCDC chip circuit design will encounter the problem of calculating the partial voltage resistance, the following is a brief introduction to how to...

Some countermeasures to suppress electromagnetic interference of power module

What is the offset voltage of the op amp?

What is the offset voltage of the op amp?Answer: When the two inputs of the op amp are zero, the output has a certain value, that is, the offset voltage Vos. Th...

Power management chip how to measure the internal structure of the power chip

Power management chip (PMIC) is an integrated circuit that includes a variety of power rails and power management functions in a single chip. The main function ...

Summary of common level switching circuits

In the circuit designed by us, the pins of different chips use different voltages, such as common 1.8V, 3.3V, 5V, etc. We need to communicate devices with diffe...

Can I take any value of DC-DC partial voltage feedback resistor?

I believe that every hardware engineer should have used DC-DC, so have you ever thought about the value of the partial voltage feedback resistance?

Use of integrated operational amps

At present, the common packaging methods of integrated OP amPs include metal shell package and dual in-line package, as shown in Figure 3.7.1, with the latter b...

How to realize self-locking function of stepper motor

The stepper motor itself does not have a self-locking function, but it can achieve self-locking function through external devices or control methods

Isolated and non-isolated power supply characteristics PK

If the CPU is likened to the brain of the electronic system, then the power supply is equivalent to the heart of the electronic system. With the increasing dem...