Hybrid Integrated Circuit-Other Electronic Hybrids-design Pcb Board

- Jan 05, 2017-

Hybrid Integrated Circuit-Other Electronic

Hybrids-design Pcb Board

Other electronic hybrids

In the early days of telephones, separate modules containing transformers and resistors were called hybrids or hybrid coils; they have been replaced by semiconductor integrated circuits.

In the early days of transistors the term hybrid circuit was used to describe circuits with both transistors and vacuum tubes; e.g., an audio amplifier with transistors used for voltage amplification followed by a vacuum tube power output stage, as suitable power transistors were not available. This usage, and the devices, are obsolete, however amplifiers that use a tube preamplifier stage coupled with a solid state output stage are still in production, and are called hybrid amplifiers in reference to this.

Steps in manufacturing Solid Logic Technology hybrid wafers used in the IBM System/360 and other IBM computers of the mid-1960s. The process starts with a blank ceramic wafer 1/2 inch square. Circuits are laid down first, followed by resistive material. The circuits are metalized and the resistors trimmed to the desired value. Then discrete transistors and diodes are added and the package encapsulated. Display at the Computer History Museum.


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