NEW! High Power Semiconductor Crowbar Protector for AC Power Line Applications

AC power line disturbances are the cause of many equipment failures. The damage can be as elusive as occasional data loss or as dramatic as the destruction of a power supply, LED Lightings, Industrial system and consumer equipment such as ovens or refrigerators and television sets.

Power line disturbances go by many names—transients, surges, spikes, glitches, etc. But regardless of the specific name, an understanding of their characteristics and the operation of the various protection components available is necessary to design an effective protection circuit… Read More

NEW! TVS Diode Protection for VFDs/IGBT Inverters

In virtually all industrial control systems, variable frequency drives (VFDs)/inverters are commonly installed at the front end of motors in order to regulate speed and save energy. Based on differing input voltage requirements, inverters are often categorized as low voltage (110V, 220V, 380V, etc.), medium voltage (690V, 1140V, 2300V, etc.), or high voltage (3kV, 3.3kV, 6kV, 6.6kV, 10kV, etc.).

Because VFDs/inverters are critical components in providing power, their operation, performance, and reliability are crucial to maintaining uninterrupted power. This application note focuses on TVS Diodes that can help ensure the reliability and operation of a VFD, even under adverse conditions… Read More

NEW! Are you safe with Drones in the sky? Designing Reliable Drones using Proper Circuit Protection

No doubt “pilot losing control” is behind many drone incidents and crashes. But what’s behind that “loss of control?” After all, even small recreational drones depend on a host of subsystems – GPS, receiver antennae, WiFi I/O ports and electronic speed controllers – to stay in the air. Lose one and that UAV becomes a UFO pretty quickly… Read More

NEW! Magnetic Sensing in Dishwashers

Dishwashers are one of the most improved appliances for the kitchen over the last few years. Upgrades include more thorough cleaning/washing cycles while still lowering water usage and energy consumption. Like many modern appliances, dishwasher microprocessor based controllers allow the use of a variety of sensors to ensure precision cleaning, safe, and energy-efficient operation. Littelfuse’s magnetic sensor products help make these appliances as reliable and efficient as ever…. Read More

NEW! Magnetic Sensing in Clothes Dryers

Clothes dryers have had a history of being energy inefficient ranked only behind the refrigerators and freezers. Like many modern appliances, clothes dryer designed with microprocessor based controllers allow the use of a variety of sensors to ensure proper, safe, and energy-efficient operation. Littelfuse’s magnetic sensor products help make these appliances as reliable as ever…. Read More

NEW! Sensing in Oven/Stoves and Range Hood

The kitchen is said to be the most important room of a home, while cooking is the center and focal point when using the kitchen. The design of ranges, which includes the stove and cook top have improved with better cooking features and efficiencies. Electric ranges are the most popular while gas controlled ovens are also available. Like many modern appliances, gas and electric ranges are usually equipped with microprocessor controls. A range uses a variety of sensors to ensure proper, safe, and energy-efficient operation and reliability.…. Read More

NEW! Position and Level Sensing in Refrigerators and Freezers

Appliances like refrigerators, freezers, and wine coolers traditionally consume significant amounts of energy, thus not being very environmental-friendly. Like many modern appliances, refrigerator and freezer microprocessor based controllers allow the use of a variety of sensors to ensure proper, safe, and energy-efficient operation. Littelfuse’s magnetic sensor products help make these appliances as reliable as ever.…. Read More

UPDATED! Position and Level Sensing in Washing Machines

A most integral appliance in any home is a washing machine. Washing machines have helped made the chore of cleaning clothes quite effortless. Like many modern appliances, washing machines today use a variety of sensors to ensure proper, safe, and energy-efficient operation. Littelfuse’s magnetic sensor products help make these appliances as reliable and efficient as ever… Read More
Automotive Circuit Protection using Littelfuse Automotive TVS Diodes

GR-1089 Issue 6 Review

This summary provides a review of some of the changes in GR-1089 when Issue 6 was released. Many small individual tables are used to focus on the ESD, surge, and power fault testing per specific application types. The reader is advised to review the official GR-1089 Issue 6 document to insure a comprehensive understanding of all requirements defined in this Ericsson (formerly Telcordia) document. This summary is merely a succinct overview of limited sections of the original GR-1089…. Read More
Automotive Circuit Protection using Littelfuse Automotive TVS Diodes

Thyristor Applications in 2-Wheeler and All-Terrain Vehicles (ATVs)

Most engine-powered vehicles and equipment use an alternator (electrical generator) to convert the mechanical energy produced by the engine into electrical energy in the form of AC current. A rectifier then converts this AC current into a DC current suitable for recharging the battery or directly driving electrically powered components; in all-terrain vehicles, these components include accessories like head lamps and handle warmers. The system’s regulator prevents the battery from overcharging by limiting the current feed when the battery voltage exceeds a preset value…. Read More

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