Technology and Electronic

 This easy-to-read guide will teach you how transistors work so that you can use them in your next circuit.   How Transistors Work (BJT) Let’s start with the classic NPN transistor. It’s a Bipolar Junction Transistor (BJT) and has three legs: Base (b) Collector (c) Emitter (e) If you turn it ON, current can flow through it from the collector to the emitter. When it’s OFF, no current can flow. In the example circuit below, the transistor is OFF. That means no current can flow through it, so the Light-Emitting Diode (LED) is also off. To turn the transistor ON, you need a voltage of about 0.7V between the base and the emitter. If you had a 0.7V battery, you could have connected it between the base and emitter, and the transistor would have turned ON. Since most of us don’t have a 0.7V battery, how do we turn on the transistor? Easy! The base-to-emitter part of a transistor works like a diode. A diode has a forward voltage that it “grabs” from the available voltage. If you add a resistor

Description : The  ADS1262  is low-noise, low-drift, 38.4-kSPS, delta-sigma (ΔΣ) ADCs with an integrated PGA, reference, and internal fault monitors. The ADS1262 integrates an auxiliary, 24-bit, ΔΣ ADC intended for background measurements. The sensor-ready ADCs provide complete, highaccuracy, one-chip measurement solutions for the most-demanding sensor applications, including weigh scales, strain-gauge sensors, thermocouples, and resistance temperature devices (RTD). The ADCs are comprised of a low-noise, CMOS PGA (gains 1 to 32), a ΔΣ modulator, followed by a programmable digital filter. The flexible analog frontend (AFE) incorporates two sensor-excitation current sources suitable for direct RTD measurement. A single-cycle settling digital filter maximizes multipleinput conversion throughput, while providing 130-dB rejection of 50-Hz and 60-Hz line cycle interference. The ADS1262 is pin and functional compatible. These devices are available in a 28-pin TSSOP package and are fully s

  Switched reluctance motor is a type of speed-regulating motor developed after DC motor and brushless DC motor. Product power levels range from several watts to hundreds of kilowatts, and are widely used in household appliances, aviation, aerospace, electronics, machinery, and electric vehicles. The switched reluctance motor (SRM) used in the switched reluctance motor speed control system is the part that realizes the electromechanical energy conversion in the SRD, and it is also the main sign that SRD is different from other motor drive systems. SRM series double salient pole variable reluctance motor, the salient poles of the stator and rotor are laminated by ordinary silicon steel sheets. The rotor has neither windings nor permanent magnets. Concentrated windings are wound on the stator poles. The two diametrically opposed windings are connected together, which is called "one-phase". SR motors can be designed with a variety of different phase numbers. The stator and rotor

A synchronous motor is an AC motor that generates torque by the interaction of the excitation magnetic field supplied by a direct current and the rotating magnetic field of the armature, and rotates at a synchronous speed.) is an AC motor that generates torque by the interaction of the DC-powered excitation magnetic field and the rotating magnetic field of the armature, which rotates at a synchronous speed. A synchronous motor is an AC motor that generates torque by the interaction of the excitation magnetic field supplied by a direct current and the rotating magnetic field of the armature, and rotates at a synchronous speed.) is an AC motor that generates torque by the interaction of the DC-powered excitation magnetic field and the rotating magnetic field of the armature, which rotates at a synchronous speed. An AC motor in which the rotation of the rotor is the same as the rotation of the stator's rotating magnetic field. The rotor speed n, the number of magnetic pole pairs p, a

Clamp means jamming the position. In circuit, is means controlling the voltage. Clamp Diode is a kind of diode that is used to limit the potential of a certain point in the circuit, controlling the input voltage to a peak value to a predetermined voltage, without changing the signal. The working principlealso the unidirectional conductivity of the diode. What is the principle of  clamping diodes ? To understand this question, you must first understand clampping circuit. A circuit that can fix a certain part of the input and output signal waveform at a selected level is called a clamp circuit. If you want to change the clamp level, you can connect a DC potential in the circuit. If you want to clamp the bottom of the pulse, you can reverse the diode on the side. The following figure shows the input signal clamping circuit of a typical integrated operational amplifier block. The clampping diode protection circuit is consisted of two diodes in  reverse series . Only one diode can be turned

  SMD Resistor  or  Chip Fixed Resistor  is one of the metal glass glaze  resistors . It is a resistor made by mixing metal powder and glass glaze powder and printing on the substrate by the screen printing method. It is resistant to humidity and high temperature with a low-temperature coefficient. SMD Resistor can greatly save the cost of circuit space and make the design more refined. SMD is the abbreviation of Surface Mounted Devices, which is a special kind of SMT (Surface Mount Technology) element device. SMD resistors are usually called chip resistors. For more information about SMD resistors, find out here