Circuit & System Protection


Latest Articles

Fused shuttered outlet type 4719
25 September 2002, Retron
Schurter's new type 4719 offers what is believed to be the world's first fused shuttered outlet. It is a highly compact module with the advantage of an integrated fuseholder and neon indicator to save ...

Read more...
Overtemperature protection for semiconductors
10 September 2002
Over-heating of power transistors, diodes, ICs and circuits can be prevented with a new 0603-sized chip from Murata. Murata's PTC thermistor has a 1,6 x 0,8 mm footprint and is under 1,0 mm high. Nominal ...

Read more...
How to improve insertion loss performance of surface mount Pi-filters
14 August 2002, TRX Electronics
One of the reasons a surface mount EMI filter does not give as good an insertion loss as panel mount types at high frequencies (100 MHz to 1 GHz), is that the interference (EMI) on the track leading to ...

Read more...
Resettable fuse rated to 33 V
14 August 2002
Bourns has launched a series of 33 V polymeric positive temperature coefficient (PPTC) fuses. The MF-SM100/33V, SM150/33V and SM185/33V provide overcurrent protection and offer design flexibility for ...

Read more...
Devices keep automotive voltages under control
17 July 2002, Electrocomp
In addition to the existing AUTO series of disk varistors for automotive voltages of 12 and 24 V, EPCOS has now developed the 42 V PowerNet series for the future 42 V automotive power supply system. They ...

Read more...
The complexities of board-level shielding
19 June 2002
When measuring shielding effectiveness, designers must take all issues into account. The last five years or so has seen an increase in the use of the board-level shield, thanks to cost and size constraints ...

Read more...
Quad USB 2.0 data line protection device
5 June 2002
The industry's first 4-line protection device to meet the stringent USB 2.0 requirements for high-speed data lines used in computing has been announced by ON Semiconductor. Claimed to deliver a line-to-line ...

Read more...
PC board fuseholders
5 June 2002, Actum
Developed specifically for use on PCBs, Pudenz's FLR type fuseholders are a logical answer to reduced space availability due to ever-increasing product miniaturisation. The advantage over existing G-type ...

Read more...
Single and dual EMI filters with ESD protection
8 May 2002
On Semiconductor's NZF220TT1, NZF220DFT1 are low-pass filters that eliminate or reduce high frequency signal or high-speed transients from the main signal. They offer transient overvoltage protection ...

Read more...
Surge arresters with pluggable 40 kA protection
8 May 2002, Surge Technology
Surge Technology's locally-manufactured DEHNguard-T lightning surge arresters are DIN-rail mounted and can withstand surge currents of up to 40 kA. The pluggable units consist of a base section which, ...

Read more...
Why not all transient voltage surge suppressors are the same
24 April 2002
Research indicates that up to 80% of voltage surges come from internal sources such as motors, fluorescent lights, photocopies and other switching devices

Read more...
Comparison of technologies used in surge protection devices
24 April 2002
The solutions employed to protect low voltage networks against transient overvoltages induced by lightning strikes - surge protection devices (SPDs) - are now widely spread. However, the choice between ...

Read more...
Lightning surge protectors
24 April 2002
A new lightning surge protector from Webb Industries has been introduced to protect sensitive equipment. The PolyPhaser DSX-D surge protector is designed to work from 0,8 to 2,2 GHz and is fully weatherised. ...

Read more...
Miniature multilayer varistors
24 April 2002
BCcomponents has extended its popular range of varistors when it launched the new smaller 0603 size multilayer varistor (MLV). This MLV is designed for surge suppression applications and electrostatic ...

Read more...
Dual element transient voltage suppressors
24 April 2002
Offering design engineers the ultimate in high density circuit protection, AVX introduced a dual-element 0405 MultiGuard multilayer ceramic TVS array. This line of surface mount chips offer the equivalent ...

Read more...
First lead-free resettable fuses in the industry
24 April 2002, Electrocomp
Bourns expanded its Multifuse product line with the release of a range of lead-free polymeric positive temperature coefficient (PPTC) battery strap devices designed for the protection of all types of ...

Read more...
Feedthrough caps for EMI suppression
24 April 2002
AVX manufactures a series of miniature ceramic chip components that combine capacitor and inductor elements in a single distributed constant circuit filter. Designated the W2H/W3H Series, these surface ...

Read more...
Internationally-approved fuses
24 April 2002, Actum
In its modern factory, using sophisticated, specially developed precision equipment, ELU produces fuses and fuseholders which conform to various DIN-SEMKO-VDE-UL and CSA specifications. ELU components ...

Read more...
Battery strap resettable fuses
24 April 2002, Electrocomp
Bourns is offering Multifuse polymeric positive temperature coefficient (PPTC) strap components designed to enhance the safety and performance of rechargeable battery packs. The Multifuse product line ...

Read more...
Tiny high-current beads
24 April 2002
Murata's 0603 sized ferrite beads can suppress noise on power supply lines in high performance digital equipment. As the number of peripherals that can be connected together by systems like USB increases, ...

Read more...



<< First   < Previous   Page 50 of 54   Next >   Last >>







While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.




© Technews Publishing (Pty) Ltd | All Rights Reserved