A transformer filter arrangement (30) for passing signals at a fundamental frequency and suppressing signals at one or more interfering frequencies is disclosed. It comprises a transformer (100) having a first winding (110) and a second winding (120), wherein the first winding (110) has a first end (112a) and a second end (122b) and the second winding (120) has a first end (122a) and a second end (122b). It further comprises one or more capacitors (130a-e). For each capacitor (130a-c) of a first set of at least one capacitor of the one or more capacitors (130a-e), the capacitor (130a-c) is connected between a pair of taps (a1, a2; b1, b2; c1, c2) of the first winding (110), wherein each tap (a1, a2, b1, b2, c1, c2) of the pair of taps (a1, a2; b1, b2; c1, c2) is located between the first end (112a) and the second end (112b) of the first winding (110), and the capacitor (130a-c), together with an inductive sub segment (140a-c) of the first winding (110), which is connected in parallel with the capacitor (130a-c) between the pair of taps (a1, a2; b1, b2; c1, c2), forms a parallel LC circuit which is tuned to resonate at one of said interfering frequencies for suppressing signals at said one of the interfering frequencies. A corresponding integrated circuit, a corresponding radio receiver circuit, a corresponding radio transmitter circuit, and a corresponding radio communication apparatus are also disclosed.

A magnetic coil module includes: a first magnetic core; a second magnetic core; plural enameled wires wound on the first magnetic core to form a transformer and wound on the second magnetic core to form a common mode choke, the transformer being electrically connected to the common mode choke to form a signal transmission channel, the transformer including a center tap, the center tap including a tinned portion for forming a mechanical and electrical connection with tin; and an insulative member coated on the tinned portion to enable the magnetic coil module to withstand high voltage shock of 3KV and above.

An electronics assembly includes a plurality of planar conductive metal sheets including a first conductive metal sheet, a second conductive metal sheet attached and electrically coupled to the first metal sheet, and a third conductive metal sheet attached and electrically coupled to the second metal sheet. The second metal sheet is located between the first and third conductive metal sheets. Air gaps are defined in the plurality of planar conductive metal sheets to form metal traces that define electrically isolated conductive paths from an outer surface of the first conductive metal sheet to an outer surface of the third conductive metal sheet in a multilevel conductive wiring network. The multilevel conductive wiring network can be attached and electrically coupled to a microchip and to one or more capacitors to form a power converter.

A method and device for reducing electrical consumption in an AC electric circuit with an AC device and at least one energy saving device that includes a) An electromagnetic induction Voigt filter, dry type; b) A harmonics Snubber/Cyber network filter; c) Linear phase FIR notch filters; d) Surge suppression device; e) A surge suppression device with EMP Faraday filters; f) Active atomic resonance filter; g) Harmonic surge filter; h) High efficiency magnetic transformer with a coil core and three distinct wire windings for creating a transformer, at least one the wires has different conductive contents from the others.