Editing Two-port network (section)

===History===
The {{mvar|h}}-parameters were initially called ''series-parallel parameters''.  The term ''hybrid'' to describe these parameters was coined by D. A. Alsberg in 1953 in "Transistor metrology".<ref>56 IRE 28.S2, p. 1543</ref>  In 1954 a joint committee of the [[Institute of Radio Engineers|IRE]] and the [[AIEE]] adopted the term {{mvar|h}}-''parameters'' and recommended that these become the standard method of testing and characterising transistors because they were "peculiarly adaptable to the physical characteristics of transistors".<ref>AIEE-IRE committee report, p. 725</ref>  In 1956, the recommendation became an issued standard; 56 IRE 28.S2.  Following the merge of these two organisations as the [[IEEE]], the standard became Std 218-1956 and was reaffirmed in 1980, but has now been withdrawn.<ref>IEEE Std 218-1956</ref>