A surge or transient protection circuit is described which operates in an immediate fail-safe mode of failure. If an incoming transient exceeds the transient absorption capacity of the circuit, precision fast-blow fuses are immediately opened to remove current from the load to prevent damage to the equipment connected to the transient suppression circuit and to indicate to the user that the transient suppression abilities of this circuit have been damaged. The transient suppression circuit uses silicon transient voltage suppressor components to absorb the fast-rising edge of transients and also uses slower-acting MOV transient absorption devices for the bulk of the overvoltage transient power. Upon short-circuit failure of any of the suppressor components, the excessive current draw produced thereby results in blowing of the fast-blow fuses.

Surge protection device

The present invention relates to a passive electronic component architecture employed in conjunction with various dielectric and combinations of dielectric materials to provide one or more differential and common mode filters for the suppression of electromagnetic emissions and surge protection. The architecture allows single or multiple components to be assembled within a single package such as an integrated circuit or connector. The component's architecture is dielectric independent and provides for integration of various electrical characteristics within a single component to perform the functions of filtering, decoupling, fusing and surge suppression, alone or in combination.

Paired multi-layered dielectric independent passive component architecture resulting in differential and common mode filtering with surge protection in one integrated package

The utilization of clusters of two or more metal oxide varistors (MOVs) connected in parallel for suppressing surges and transients Particular embodiments are disclosed for both grounded and ungrounded power systems Also disclosed are two-stage and multi-stage uni-directional and bi-directional suppressors Uni-directional means that the suppressor is intended to be placed between a source and a load for the purpose-of preventing voltage surges and transients from being propagated from the source into the load Bi-directional suppressors are intended to be placed between a source and a load and provide suppression in both directions simultaneously

Voltage surge suppression power circuits

The present invention relates to a multi-functional energy conditioner having architecture employed in conjunction with various dielectric and combinations of dielectric materials to provide one or more differential and common mode filters for the suppression of electromagnetic emissions and surge protection. The architecture allows single or multiple components to be assembled within a single package such as an integrated circuit or connector. The component's architecture is dielectric independent and provides for integration of various electrical characteristics within a single component to perform the functions of filtering, decoupling, fusing and surge suppression.

Multi-functional energy conditioner

A fuse and filter arrangement having to a polymer fuse apparatus that provides bypass fuse protection. A polymer bypass fuse includes of an electrical conductor wherein a portion of the conductor is surrounded by an internal electrode, which is then surrounded by a layer of polymeric positive temperature coefficient (PTC) material, which is then surrounded by a conductive material similar to that of the internal electrode. The fuse and filter arrangement includes a plurality of in-line and bypass fuses combined with a differential and common mode filter, which itself consists of a plurality of common ground conductive plates maintaining first and second electrode plates between the various conductive plates, all of which are surrounded by a material having predetermined electrical characteristics to provide fail safe filter and circuit protection.

Polymer fuse and filter apparatus

A power line filter suppresses or dissipates and clamps short rise time high voltage transients carried by power transmission lines and provides continuous protection against continuous type induced noise The power line filter includes one or more modules connected to either direct current or alternating current power lines to protect sensitive electrical equipment from the transients and continuous noise The module used with a direct current power line includes a continuous suppressor connected between a source and load, and a selenium surge suppressor and a metal oxide varistor connected in parallel across the source The module used with an alternating current power line includes a continuous suppressor connected between the source and the load, and a selenium surge suppressor and a gas tube connected in parallel across the source The module used with the alternating current power line can also include a metal oxide varistor also connected in parallel across the source The alternating current power line filter modules can be connected to single phase, two-phase or three-phase wye and delta power systems The power line filter module provides instantaneous reaction to noise transients and a broad range of energy dissipation or shunting capability along with protection from continuous type noise

George H. Warren

Papers

Power line filter for transient and continuous noise suppression