Circuit & System Protection


Latest Articles

Power inlet combines line-filter and circuit breaker
3 November 2004, Retron
Schurter's series EF11 power entry module combines an appliance inlet, according to IEC/EN 60320-1, and 2-pole circuit breaker for equipment. Unlike popular fused modules, the circuit breaker provides ...

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Snubber series for IGBTs
3 November 2004, Electrocomp
Epcos has considerably extended its line of snubber capacitors for IGBTs and now covers the voltage range from 850 to 2000 V d.c. and the capacitance range from 47 nF to 2,5 μF. The components are available ...

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Firewire-compliant hot-swap controllers
3 November 2004, CST Electronics, Electrocomp
Maxim has introduced what it claims are the industry's first fully integrated hot-swap controllers for IEEE1394 (FireWire) applications, allowing safe insertion and removal of IEEE1394 peripherals from ...

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EMI filter for 48 V power input
20 October 2004, Electronic Industry Supplies
The 48 V d.c. power input for telecommunications applications is the main target of Spectrum Control's newly developed series of EMI-filters. Complementing the company's existing comprehensive range of ...

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Lead-free fuseholder style circuit breaker
20 October 2004, Retron, Integrated Solutions, Government and Parastatal (Industry)
Fuseholder style circuit breakers are ideal substitutes for panel fuses where inrush currents cause nuisance trips, or ageing of the fusing element overtime. Resetting the circuit can avoid unnecessary ...

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BGA-packaged surface mount optocoupler has small footprint
22 September 2004, Altron Arrow
Said to be the first single-channel optocoupler with a transistor output, housed in a BGA (ball grid array) package, is available from Fairchild Semiconductor. The FODB100 microcoupler is designed for ...

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Copper beryllium fingerstock gaskets ease EMI problems
25 August 2004
For minimising electromagnetic interference (EMI) problems where enclosure doors, cabinets and boxes are concerned, Laird Technologies can supply copper beryllium fingerstock gaskets. These act as conductive ...

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High power transient suppressor replaces many diodes
11 August 2004, Altron Arrow
For more efficient electrical and electronic device protection against destructive higher power transient voltages, Littelfuse offers the AK series high current silicon transient suppressor. The AK series ...

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Photocouplers
14 July 2004
ECE's EPC series photocoupler features 3750 V input/output voltage isolation (2500 V isolation for SO-package). It has a low drive power requirement (TTL/CMOS compatible) and generates no EMI/RFI. High ...

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SST oscillators said to be a better solution to expensive EMI problems
14 July 2004, Altron Arrow
A new range of spread spectrum technology (SST) oscillators that can provide a low-cost means of reducing EMI radiation in electronic systems and are manufactured as drop-in replacements for standard ...

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Effects of corrosion on EMI gasket performance
14 July 2004
Corrosion is the natural oxidation of metal. Corrosion in metals (except the noble group) may appear in several distinct forms but corrosion is most prevalent in a salt water environment. Metals occur ...

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MLV with nickel barrier termination improves solderability
14 July 2004, Altron Arrow
Answering growing concerns about manufacturing yields for PCBs populated with increasingly smaller components, Littelfuse has introduced a nickel barrier termination option for its complete line of 0402 ...

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Hybrid choke eliminates two extra components
14 July 2004, Information Security, Products & Solutions
Murata developed a device to suppress conducted and radiated disturbance with using one component instead of the usual three. The company's hybrid choke coil (HCC) is both a common mode and a differential ...

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Selecting temperature sensors for system measurement and protection
14 July 2004, CST Electronics
A number of technologies are available for designers who need to measure temperature within a system. Thermistors, thermocouples, RTDs, and temperature sensor ICs each have advantages and disadvantages ...

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Micro-shock detector
14 July 2004
A highly sensitive shock sensor for protection of display cases, safes, equipment vibration, vending machine drop detection and a whole range of similar functions is available from Murata. The PKS1-4B1 ...

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Choke coils have low differential impedance
14 July 2004, Products & Solutions
With a volume of only 1,025 mm3, Murata's new common mode choke coils (CMCCs) for noise suppression in high-speed signal lines are said to be the smallest in the industry. As products get smaller and ...

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DC noise suppression block filters
14 July 2004
Noise suppression in high current DC lines is said to be easier with Murata's latest 15 A low DC resistance block filter. This filter is designed specifically for the suppression of noise in large screen ...

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Four-channel surge protection module
14 July 2004, Centurion Micro Electronics, Surveillance
Most factories today are facing increasingly complex wiring systems with high voltages. Interference from these high voltage wires can cause serious damage to control systems. The result of such a surge ...

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Dual temperature sensor and fan controller
14 July 2004, CST Electronics
Maxim's MAX6678 is a dual temperature sensor and fan controller that offers remote temperature sensing up to 145°C and automatic adjustment of two cooling fans to minimise noise and improve efficiency. ...

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Capacitors protect against mains overvoltages
30 June 2004
Wima now offers RFI capacitors with polypropylene dielectric in addition to the metallised paper series. The Wima MKP-X2 and Wima MKP-Y2 series are available with capacitance values from 1000 pF through ...

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