Tag Archives: voltage

Bourns is offering IEC-grade surge protection for ac or dc power rails with four DIN rail mount device series. 1270 series AC surge protection to IEC/EN 61643-11 Class I + Class II / T1+T2 1280 series the same, plus a thermal disconnector “that eliminates the need for up-stream over-current protection”, said Bourns. 1430 series DC surge protection to IEC/EN 61643-31 ...

I was digging around in the LM311 (and LM111, LM211) comparator data sheet, and came across this unusual voltage reference (diag right). It consists of an npn cascsode pair of transistors, the top one connected (collector to base) as a diode, and the two bases tied together. I have no idea how this works, and am going slightly bonkers trying ...

STMicroelectronics has introduced a precision digital current, voltage and power monitor with a an I3C bus interface. Called TSC1641, it has two 16bit ΣΔ converters at its inputs, allowing simultaneous measurement of current (LSB=2.5µV) and voltage (LSB=2mV). The measured voltage can be anywhere from 0 to 60V (65V abs max), and the two current terminals sense with either polarity across ...

Melexis is claiming 1% accuracy over temperature and life for its latest galvanically-isolated Hall effect current sensor. “MLX91230 guarantees this accuracy not only for thermal drift but also lifetime drift and linearity errors,” according to the company. The 8pin SOIC device is AEC-Q100 and ASIL compliant, supporting system integration up to ISO 26262 ASIL D functional safety requirements. Current measurement ...

Ditronix has released the an IoT power monitor board for mains and solar energy, and a software development kit to go with it. Called ‘IPEC’, it provides three phase (3P3W, Y or Δ), split-phase, or three-channel single phase monitoring, and has an expansion ports that can be configured for DAC, PWM, MPPT (peak power tracking) or I2C outputs. “The board ...

Panasonic has introduced an insulated electric screwdriver for use on live circuits. Called EYED11SA “the typical red and yellow design has been established to easily identify tools that are particularly insulated and the right choice for working on machinery or devices that cannot be easily or entirely separated from electric circuits”, according to the company. It is 145mm long and ...

Bourns has released its highest current carrying bi-directional transient voltage suppressor diode series in surface-mount DFN packaging (17 x 15 x 2.5mm in this case). Model PTVS20-015C-H is capable of handling 20kA surges. “The diode meets IEC 61000-4-2 Level 4 ESD protection requirements. It also assists in meeting IEC 61000-4-5 8/20 μs current surge requirements for lightning protection and is ...

At Electronica in Munich today, Power Integrations announced a family of digitally controllable, off-line constant-voltage constant-current zero voltage switching (CV CC ZVS) fly-back ICs for compact power adaptors. Called InnoSwitch4-Pro, they have integrated 750V GaN (gallium nitride) primary switches, handle up to 220W, and switch at up to 140kHz with planar transformers. 10mV/step and 30mA/step output adjustment is supported through ...

I have been asked to demonstrate some electrical things to a GCSE student. One of the things on the syllabus is potential difference, and another is EMF – electromotive force. I had always assumed that they were two sides of the same coin, possibly using language created from two different directions during the Dark Ages of Electricity. Also, I may ...

Vishay has introduced three series of 24V surface-mount transient voltage suppressors (TVS) that offer peak pulse power dissipation equivalent to the 7kW of conventional TVS at 10/1000μs in SMC (DO-214AB) packaging and 10/10,000 μs in DO-218AB, it said. The bidirectional devices work over -55 to +175°C for automotive, telecom and industrial applications. With 24V maximum clamping, XMC7K24CA series offers 180A peak ...