-
Principle and design of high fidelity BTL amplifier
This paper introduces a BTL Power amplifier circuit without debugging, with high fidelity and low cost, and the final power amplifier IC can be selected acc...
See More
-
Design of shutdown function for boost converter
Figure 1 shows the boost switch converter circuit, which has a well-known problem: if the input of boost converter IC1 is pulled down to turn off the boost ...
See More
-
Hidden behavior and characteristic analysis of passive components on PCB
Traditionally, EMC has been regarded as "black magic". In fact, EMC can be understood by mathematical formulas. However, even if there are mathematical anal...
See More
-
Working principle of step-up chip and step-down chip
Buck mode - boost mode, which you are familiar with, is also used more, such as 5v- "3.3V voltage stabilization. There are many corresponding chips, which y...
See More
-
Identification of resistance and capacitance
一、 Color ring representation of resistance value 1. Correspondence between color and number:
See More
-
Choose the line voltage range of input capacitor ripple current by compromise
An interesting trade-off occurs when you choose an input filter capacitor for a low-power, offline power supply. You should choose the ripple current rating...
See More
-
Introduction of methods to reduce the interference of power transformer to audio...
The power transformer can interfere with the amplifier through magnetic field, electromagnetic induction and circuit, and it is the largest interference sou...
See More
-
Integrated brush DC solution how to reduce the size of automotive motor, enhance...
With simple control, low cost and diverse functions, brushless DC motor is very suitable for automotive loads that need integrated high-power and reliable m...
See More
-
Understand PCB layout differential signal
With the continuous development of semiconductor technology and deep pressure micron process, the switching speed of IC has increased from tens of MHz to hu...
See More
-
Basic principle analysis of LDO
The basic circuit of low dropout linear regulator (LDO) is shown in Figure 1-1. This circuit is composed of series regulator VT, sampling resistors R1 and R...
See More
-
See how a bad 20W amplifier design destroys the entire speaker system
Many engineers who work with speakers and amplifiers will tell you the same thing. If the amplifier is operated excessively, the speaker driver will be dama...
See More
-
Audio equipment parameter analysis
For products of various industries, as equipment, there are various parameters. For the audio industry, speakers, sound sources and amplification equipment ...
See More
-
The detection methods and characteristics of electrolytic capacitors are introdu...
Electrolytic capacitor is a capacitor composed of two parallel metal plates and electrolysis placed between the two metal plates. Electrolytic capacitor pla...
See More
-
Transient signal analysis in PCB circuit design
I still remember my class of differential equations. One of the topics discussed is damped oscillator circuits and transient signal responses, which occur i...
See More
-
Why are diodes not suitable for series and parallel connection
As we all know, resistors can be used in series or in parallel. So, are diodes suitable for series and parallel connection? Diode in series When dio...
See More
-
On the importance of smart power audio amplifier to smart phones
There seems to be no end to what people consume on smartphones, tablets or other portable devices. With the smart phone screen becoming larger and brighter,...
See More
-
What is an operational amplifier/comparator?
"We know that the amplified voltage can be supplied to the load without attenuation, and the voltage of the signal source will not decay. Therefore, we hope...
See More
-
Signal frequency response of transimpedance amplifier
In my previous blog about DC transimpedance amplifier "transimpedance amplifier Basics", we began to understand this simple circuit. Finally, at the end of ...
See More
-
Interference and suppression of PCB ground wire
Absrtact: in PCB design, especially in high-frequency circuits, we often encounter some irregular and abnormal phenomena caused by ground wire interference....
See More
-
Power MOSFET design considerations
MOSFET used as power switch With the continuous optimization of device design for decades, power MOSFET transistors have brought new circuit topology and im...
See More
Business consulting
13823761625
Mail me