Printed circuit board
Videos
A printed circuit board, also known as a printed wiring board, is a laminated sandwich structure of conductive and insulating layers, each with a pattern of traces, planes and other features etched fr
Printed circuit board of a DVD player
Part of a 1984 Sinclair ZX Spectrum computer board, a printed circuit board, showing the conductive traces, the through-hole paths to the other surface, vias connecting traces on both sides, and some electronic components mounted using through-hole mounting
Proximity fuze Mark 53 production line 1944
Through-hole (leaded) resistors on a paper tape. When mounted to a PCB, the resistors are removed from the tape and their leads are trimmed to required length.
Distributed-element filter
Videos
A distributed-element filter is an electronic filter in which capacitance, inductance, and resistance are not localised in discrete capacitors, inductors, and resistors as they are in conventional fil
Figure 1. A circuit featuring many of the filter structures described in this article. The operating frequency of the filters is around 11 gigahertz (GHz). Further details below.
The PCB inside a 20GHz Agilent N9344C spectrum analyser showing various microstrip distributed-element filter technology elements
Figure 2. A parallel-coupled lines filter in microstrip construction
A microstrip low pass filter implemented with bowtie stubs inside a 20 GHz Agilent N9344C spectrum analyser