Circuit & System Protection


Latest Articles

Silicon temperature sensor is small and fast
4 June 2003, Electrocomp
Temperature sensing has in the past predominantly been the domain of PTC thermistors. Infineon Technologies says that its KT-Series silicon temperature sensor is a cost-competitive alternative. The ...

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Lever fuse terminal in compact design
4 June 2003, Phoenix Contact
The ST 4-HESI spring cage fuse terminal from Phoenix Contact has a lever that takes glass tube micro-fuses measuring 5 x 20 mm. It is suitable for protecting devices and for use in I&C circuits. The power ...

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600 V PPTC resettable fuses
21 May 2003
Bourns has introduced a new line of 600 V overcurrent protection products designed to protect telecom networks. Equipment such as modems, cable modems, fax machines, set-top boxes, point of sale and ...

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Complete range for overcurrent protection
21 May 2003, Electrocomp
EPCOS offers one of the world's largest range of PTC thermistors for overcurrent protection. Both leaded components for rated voltages from 6 to 1000 V and a wide variety of SMDs are available. A new ...

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Gas discharge tubes provide high level of protection
7 May 2003
The PBAX and CXP protectors from Citel use a gas discharge tube to protect electronic and electrical equipment from lightning surges. The gas discharge tube is placed in parallel on the line. It is ...

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Protection for 100 Base-T networks
7 May 2003, Surge Technology
The locally-designed and manufactured NET-Protector surge protection modules from Surge Technology are said to be only 1U in height with a depth of 80 mm. The units are designed specifically for 19" rack ...

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Self-hold thermostat
7 May 2003, Electrocomp, Conferences & Events
A snap-action, self-hold thermostat for motor and appliance applications, Pepi's Model JS opens the circuit in a fault condition, and an internal heat source holds it open until power is removed and the ...

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Extremely thin bimetal protector
23 April 2003, Electrocomp, Security Services & Risk Management
Pepi's snap action Model S thermal protector is said to be the thinnest type of control of its kind. Equipped with gold diffused contacts for use in low voltage/low current applications, the bimetallic ...

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USB2.0-compatible low profile chip common mode choke coils
9 April 2003
Murata has introduced a new series of chip common mode choke coils. The DLP11 series provide high levels of EMI noise suppression in high-speed differential mode signal transmission lines such as USB2.0. ...

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Conductive silicones
9 April 2003, RF Design
Rogers' EC-2000 series conductive silicones are said to be the industry's first electrically conductive EMI/RFI shielding material available in wide, continuous rolls. These products are among the thinnest, ...

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Creep action thermostats
9 April 2003, Electrocomp
Pepi's Models C and CR creep action thermostat/thermal protectors with conductive bimetal construction have low internal resistance and are available with gold diffused contacts for use in low voltage/low ...

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Wideband RF lightning protector with DC-feed
9 April 2003
Kathrein Grintek Antennas has long been one of the leading suppliers of antennas as well as active and passive RF devices to the local telecommunications industry and has, over the years, won lucrative ...

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High surge current bipolar surge arrester
9 April 2003
P100 is a Citel glass metal bipolar surge arrester characterised by its very high surge current capability (100 kA in 8/20 µs waveform) and an overcurrent that withstands 100 A r.m.s. It is mainly designed ...

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Miniature and sub-miniature fuses
9 April 2003, Actum Electronics
ELU offers a wide range of 5x20 mm and 6x32 mm glass and ceramic fuses with international approvals such as SEMKO, VDE, SEV, BEAB, IMQ, UL and CSA. The company also has fuseholders for many different ...

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Gas discharge tubes
9 April 2003, Information Security
Gas discharge tube components are made of two or three electrodes in an enclosure filled with a (non-radioactive) rare gas at a controlled pressure. The enclosure is a ceramic tube with its ends closed ...

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DIN rail surge protector for telephone/data line
9 April 2003
Citel's DL module is designed to protect telephone and data lines. The surge protection function, based on a gas discharge tube/diode combination, is for one pair and is pluggable for fast and easy maintenance ...

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Battery protector
9 April 2003, Electrocomp
A snap-action thermal protector suitable for use on 120/240/277 V a.c. loads is available with a variety of bimetallic elements that vary the circuit breaker characteristics of the device. Ideal for use ...

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ISDN line protectors
9 April 2003, Surge Technology, News & Events
The Copa DPL10F range of line protectors from Surge Technology is designed for protecting 10-wire telephone lines, 10 Base-T, ISDN and 12-60 V signal lines. The devices provide 10 kA (8/20) protection ...

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Pluggable protective switch for terminal blocks
9 April 2003, Phoenix Contact, Security Services & Risk Management
The TCP thermal cut-out protector from Phoenix Contact combines the protective mechanism of a safety fuse with the advantages of an automatic cut-out, providing effective overload protection to electrical ...

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Quarter-wave protective devices
9 April 2003, News & Events
Citel's PRC protectors use 'quarter-wave' technology. The quarter-wave stub and other mechanical elements are carefully designed according to the operating frequency band to realise a band filter (narrowband ...

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