Overpower Compensation for Current-Mode Supplies
Sep 1, 2004
A current-mode power supply works by observing the peak current circulating in an inductance. By adjusting the peak current setpoint at which the power...
Magnetic Solutions: Solving Inrush at the Source
Apr 1, 2004
A simple approach based on original research attacks inrush currents at the source - the power transformer. The use of special core materials and transformer design/construction techniques overcomes the limitations of common inrush control solutions....
PPTC Offers New Option for Circuit Protection
Jul 1, 2003
Polymeric positive temperature coefficient (PPTC) devices that are rated for line voltages of 120Vac and 240Vac provide cost-effective alternatives for circuit protection....
Varistors: Ideal Solution to Surge Protection
May 1, 2003
If you're looking for a surge protection device that delivers high levels of performance while addressing pressures to reduce product size and component count, then voltage dependent resistor or varistor technologies might be the ideal solution....
Multiple Protection Devices Guard Against Transients
Sep 1, 2002
Several devices are available to suppress transients that occur in power electronic systems. By employing the appropriate devices, the suppression system can protect the entire power system against transients on ac and dc lines....
Minimizing Transients with RC Circuits
Mar 1, 2002
Difficulties are associated with meeting the regulation needs of modern microprocessors during the very fast and large transient current changes they...
Selenium Suppressors Outperform MOV Cousins
May 1, 2001
Used as a semiconductor in rectifiers and suppressors for many years, selenium occurs naturally on the earth. Its popularity as a rectifier is fading in favor of its silicon equivalent....
Thermally Protected MOVs Resist Overvoltage Failures
Apr 1, 2001
Metal-oxide varistors are the most widely used device for protecting sensitive electronics from damaging overvoltage transients. To date, most...
