Hybrid circuit mfr. with screen printing - has insulating layer applied to magnetic core acting as carrier for final winding sections

摘要

The hybrid circuit is formed using an insulating substrate onto which initial sections (F) of a conductor winding are applied via screen printing using a conductive paste. These sections (F) each have a contact zone (KF1,KF2) at either end and are partially covered by an insulating layer (Is1) to which a magnetic core (MK) is then attached via adhesive. The core (MK) is covered by a second insulating layer (Is2) simultaneously acting as a carrier for the remaining sections (A) of the winding, these sections (A) brought into contact with the initial sections (F) carried by the substrate (Su) via a final screen printing process. The circuit provides a variable inductance coil for use in a frequency filter.