Chopper is a power conversion technique in electric power control, which essentially involves pulse-width modulation of direct current. Its waveform resembles a chopping action, hence the name "chopper."
Clamping circuits are sometimes used in IGBT drive circuits. The main purpose is to protect IGBT devices and prevent operating parameters from exceeding the limit parameters of the collector or gate. Today we summarize the precautions for the design and use of Vce and Vge clamping circuits. Vce clamp circuit The purpose of the Vce […]
There is a small device that is rarely heard of in everyday life, but is indispensable in almost any place with electricity – the IGBT, the CPU of the electronic power industry. From consumer electronics, such as the Bluetooth headphones we use, laptop power adapters, and household frequency converters, to the frequency converters in elevators, […]
Called UCC5880-Q1, it is in pre-production and the full data sheet has not yet been made public. One novel feature that has been revealed is that the device has two parallel high-side drivers and two parallel low-side drivers for the following gate. In each case, one driver of a pair can deliver up to 5A […]
“The portfolio of discrete and integrated power stage devices provides designers with the necessary flexibility to meet their specific needs for industrial applications complying with JEDEC standards JESD47 and JESD22,” said the company. Available in DSO-20-85, DSO-20-87, HSOF-8-3, LSON-81- and TSON-8 packaging, Rds(on) values range from 42 to 340mΩ max. In the half-bridges, two GaN […]
Due to its structural characteristics, resistance has lead inductance and distributed capacitance. When working at low frequencies, the resistance component plays a major role, and the reactance component can be ignored. But when the operating frequency increases, the reactance component cannot be ignored. At this time, the resistance value of the resistor working in the […]
There are many applications of electric bridges. The general application is Wheatstone single-arm electric bridges. The resistance of each arm is used to judge the size of the physical quantity by the degree of imbalance of the bridge (bridge current or voltage), such as strain gauges and so on. contents 1. What is a single […]
The feeder line is the signal line connecting the early TV and outdoor antenna, and its flat line is generally two-wire. It is also a term in the distribution network. It can refer to a branch connected to any distribution network node. It can be a feed-in branch or a feed-out branch. contents 1. What […]
The light sensor can be used to detect a variety of physical quantities, such as sound field, electric field, pressure, vibration, temperature, acceleration, etc., and can also complete detection tasks that are difficult to complete in existing detection tasks. In a small space, in a strong electromagnetic interference and high-voltage environment, fiber optic sensors have […]
Polarization refers to the phenomenon where things are polarized under certain conditions, causing their properties to deviate from their original state. Of course, electrode polarization occurs between the two electrodes (that is, the positive and negative electrodes, or the anode and cathode) of the electrolytic cell or battery. Let the positive charge accumulate around one […]
