App note from Vishay going back to the fundamentals of humble fixed resistors. Link here (PDF) In the shadow of microelectronics, passive components such as discrete resistors would seem to have fallen out of the field of view in electronics. Yet, it is the rare circuit that can do without resistors. And a look at […]
Tag Archives: vishay
App note: Design guidelines for schottky rectifiers
App note from Vishay about schottky rectifiers, choosing the right one for power efficiency and cost. Link here (PDF) Schottky rectifiers have been used in the power supply industry for approximately 15 years. During this time, significant fiction as well as fact has been associated with this type of rectifier. The primary assets of Schottky […]
App note: Diodes for bootstrap and desaturation functions
App note from Vishay on their ultra fast recovery diodes as demanded by newer high switching frequency and high voltage MOSFETs and IGBTs as applied in DC/DC converters and inverter circuits. Link here (PDF) This application note describes the basic operating principles of bootstrap and desaturation circuits commonly used with high voltage IC drivers and […]
App note: Energy harvesting – Eliminating battery replacements for IoT nodes with 196 HVC ENYCAP™
App note from Vishay demonstrating a circuit to power IoT sensors with energy storage capacitors. Link here (PDF) The V-harvester board is a photovoltaic (PV) harvesting backup demonstration circuit. It is a sophisticated stand-alone board charged using TEMD5080X01 micro PV cells or with micro USB. The input power goes into an e-peas low power AEM10941 […]
App note: Optical isolator for I2C Bus System
App note from Vishay on galvanically isolating I2C bus by optocoupler. Link here (PDF) The I2C bus, also known as inter-IC bus, is a bidirectional, two-wire, multi-user bus. It was developed by Philips Semiconductors to connect microcontrollers, EEPROMs, A/D and D/A converters, I/O interfaces, and other peripherals. For optical isolation between master and slave, an […]
App note: Optocoupler as optical isolator for RS-232 Bus System
Using optocoupler for galvanic isolation of RS-232 Bus introduced in this app note from Vishay. Link here (PDF) The RS-232 bus is a serial, single-ended bus system with a data transfer rate up to 115.2 kBd. The application areas are computer to computer or computer to peripheral devices communication, like a printer, mouse, and so […]
App note: Design considerations on Solid-State Relays in DC configuration
Solid-state relays uses app note by Vishay in DC application with resistive, capacitive and inductive loads. Link here (PDF) A solid-state relay (SSR) is an electronic switching device in semiconductor technology. An SSR has a high efficient GaAlAs infrared emitter on the input which is optically coupled to the high performance MOSFETs at the output. […]
App note: How to calculate power losses in Gen 5 diodes
App note from Vishay which focuses on the diode’s losses present during the forward and reverse condition. Link here (PDF) In the forward condition, diodes carry the current while showing the lowest resistance at the current flow (ON state) and the lowest possible voltage anode to cathode. In the reverse condition, the voltage anode to […]
App note: NTC Thermistors
App note from Vishay on their NTC thermistors, guiding you on the selection process to its application circuits. Link here (PDF)
App note: MBA/SMA 0204 with special weldable / solderable termination wires for automotive applications
App note from Vishay about their resistors with special wire termination which are used in automotive application such as sensors for engine knock , crankshaft and liquid level. Link here (PDF) As the electronic contents in automobiles are growing, there is increasing demand of electronic assemblies, such as sensors, to meet specific application requirements. The […]
App note: Conductive plastic technology
App note about conductive plastic used on motion transducers from Vishay. Link here (PDF) The polymer film track has a conductive plastic paste laid upon it. This paste includes an inert filler of carbon black which constitutes the basis of Vishay SFERNICE’s technology for manufacturing precision potentiometers. The resistive track obtained can be used: • […]
App note: AC film capacitors in connection with the mains (≤ 60 Hz)
Suppressing EMI from mains and getting power in-series with a capacitor are just the two main function of these front line capacitors and is discussed in this app note from Vishay. Link here (PDF) Because of the high energy availability and the severe environment of surge voltages and pulses, applications of capacitors in connection with […]
App note: Understanding dual terminator resistor networks
App note from Vishay about the dual terminator resistor network and how to check its internal resistor values. Link here (PDF) One of the least understood resistor network schematics in the industry today is the dual-resistor terminator schematic shown in the 8-pin SIP and in the 16-pin DIP configuration. This schematic shows up in both […]
App note: Power inductors 101
App note from Vishay about how modern power inductors are made and their performance. Link here (PDF) Power inductors are typically used for energy storage in DC/DC converters or high current noise filter applications, including motor speed control, adjustable lighting, DC power conditioning, and more. Power inductors can be divided further into two groups – […]
App note: Vishay load dump TVS series for 24 V powertrains
App note from Vishay on the changes to the load dump test condition and defines the maximum surge suppressing capability for Vishay load dump TVS series in these conditions. Link here (PDF) As more trucks and buses are built with complex electrical systems, load dump protection is becoming an important safety feature for vehicles with […]
App note: Voltage proof test for metalized film capacitors
App note from Vishay about self recovery of metalized film caps. Link here (PDF) Voltage proof tests, also called “high pot” tests, are used to check if a capacitor has a breakdown failure mode occurring at a certain test voltage. The detection of breakdown is done by a current detection, specified if exceeding a certain […]
App note: Pulse load handling for fixed linear resistors
Technical note from Vishay about linear resistor handling pulsed currents. Link here (PDF) The power and thermal behavior of fixed linear resistors are mostly based on DC or RMS loads, but pulse loads, like single energy pulse or a continuous flow of pulses, become more and more an important factor in professional electronics.
App note: Pulse capabilities for thick film power resistors
Another app note from Vishay on their thick film power resistors on pulsed application. Link here (PDF) Vishay Sfernice offers a wide range of thick film power resistors. Our resistors are able to dissipate from 5 W up to 1100 W with a large range of ohmic values (10 mOhm up to 1 MOhm). The […]
App note: How to Use an SiC Diode in a PFC Circuit
App note from Vishay on using the SiC’s diode no switching loss on PFC circuit. Link here (PDF) An SiC diode is the optimal choice for power factor correction (PFC) in continuous conduction mode (CCM) because its particular reverse recovery characteristics reduce switching losses to almost zero. The selection criteria for an SiC diode are […]
App note: Optocouplers in on-board chargers and battery monitoring systems
App note from Vishay on how optocouplers play a role on safety for Electric vehicles. Link here (PDF) The number of electric vehicles on the roads is steadily growing, increasing the need for safe and reliable battery systems and high efficiency battery chargers. Modern electric vehicles use battery systems with voltages up to 1000 V […]