NewsCenter | Utsource

• 

  Adjustable 30V / 4A Bench Power Supply

  This is a high-quality laboratory bench power supply with an adjustable output voltage from0 to 30 V and adjustable output current from a few milliamps up to 4 A. It includes a built-in electr

  2026-03-05 15:07:58

  adjustable bench power supply power supply
• 

  555 Timer LED Breathing Pulse Circuit

  555 LED Breathing / Pulse Circuit This is a circuit that uses a 555 timer IC to simulate a breathing/pulsing LED effect. It has become very popularIve received many comments and emails

  2026-03-04 16:53:09

  555 timer LED circuit
• 

  Fanless Silent Power Supply

  There are several different ways to achieve this, but essentially you need to make the heatsink non-conductive (electrically isolated) and provide better cooling for the transistors.

  2026-03-03 14:38:53

  Power Supply
• 

  Diode Clamping Circuit Analysis

  Today we will learn about clamping circuits, which are used to clamp the DC level of an output signal without distorting the waveform. In other words, they are level-shifting circuits. They can be des

  2026-03-02 15:37:27

  Diode Clamping Circuit
• 

  How to Read a Practical Transformer-Coupled Oscillator Circuit?

  The diagram below shows a typical radio frequency converter stage circuit. Local Oscillator Circuit The local oscillator is used to generate a constant-amplitude high-frequency sinusoidal si

  2026-02-27 14:52:28

  Transformer-Coupled Oscillator Circuit
• 

  Working Principle, Advantages, and Applications of Far-Infrared Filters

  FIR (Finite Impulse Response) filters are filters with a finite-length unit impulse response, also known as non-recursive filters. They are one of the most fundamental elements in digital signal proce

  2026-02-26 14:55:23

  Far-Infrared Filters
• 

  How to Analyze a Positive Half-Wave Rectifier Circuit?

  The figure below shows a classic positive half-wave rectifier circuit. T1 is the power transformer, and VD1 is the rectifier diode used for rectification. When the diode conducts, current flow

  2026-02-25 11:35:42

  half wave rectifier
• 

  How to Read a Positive Full-Wave Rectifier Circuit?

  Important Notes Remember the following two key characteristics of a full-wave rectifier circuit: (1) A full-wave rectifier circuit uses two rectifier diodes.(2) The secondary winding o

  2026-02-24 15:32:01

  Full-Wave Rectifier Circuit Rectifier
• 

  Example Analysis: Four Types of Fixed-Bias Transistor Circuits

  1. Typical Fixed-Bias Circuit The figure shows a classic fixed-bias circuit. VT1 is an NPN transistor powered by a positive supply +V. (1) Fixed-bias resistorOnce the DC supply voltage +V and

  2026-02-23 10:00:00

  Fixed-bias transistor circuit
• 

  Detailed Explanation of a Simple Diode DC Voltage Regulator Circuit

  A simple diode DC voltage regulator circuit is mainly used in local DC power supply sections. Because of its simple structure and low cost, it is widely used in practical circuits.This type of

  2026-02-20 10:00:00

  Diode DC voltage regulator
• 

  Analysis of the Operating Principles of Four Types of Collector–Base Negative Feedback Transistor Bias Circuits

  The collectorbase negative feedback bias circuit is one of the most commonly used transistor bias circuits. It uses only a single bias resistor to form the bias network. 1. Typical CollectorB

  2026-02-18 11:00:00

  Collector–base bias circuit
• 

  How to Analyze Transistor Circuits?

  A transistor has two operating states: static and dynamic. The DC operating state of a transistor when no signal is applied is called the static state, and the currents at this time are called

  2026-02-16 10:00:00

  Transistor circuit analysis
• 

  Example Analysis: How to Read and Understand a Voltage Doubler Rectifier Circuit

  The figure below shows a classic voltage doubler rectifier circuit. In the circuit, Ui is the AC input voltage, which is a sinusoidal AC voltage, and Uo is the DC output voltage. VD1, VD2, and

  2026-02-12 10:00:00

  Voltage doubler rectifier
• 

  Example Analysis of a Negative-Polarity Full-Wave Rectifier Circuit

  The figure below shows a negative-polarity full-wave rectifier circuit. In the circuit, T1 is the power transformer, which is the same as the transformer used in a positive-polarity full-wave

  2026-02-10 13:43:18

  Negative full-wave rectifier
• 

  Detailed Explanation of the Transistor Input Circuit and Output Circuit

  1. Transistor Input Characteristic Curve The figure below shows the input characteristic curve of a common-emitter circuit for a certain type of transistor. In the figure, the x-axis represen

  2026-02-09 16:02:30

  Transistor input output characteristics