 | This articleneeds additional citations forverification. Please helpimprove this article byadding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Werner Jacobi" – news ·newspapers ·books ·scholar ·JSTOR(February 2021) (Learn how and when to remove this message) |
Werner Jacobi | |
|---|---|
| Born | (1904-03-31)31 March 1904 |
| Died | ca. 3 May 1985(1985-05-03) (aged 81) Munich (uncertain) |
| Occupation(s) | physicist, inventor |
| Known for | development of first known integrated transistor amplifier |
Werner Jacobi (31 March 1904 – probably 3 May 1985) was a German physicist and inventor.
Jacobi studiedmechanical engineering at theTechnical University of Munich and thenphysics at theUniversity of Munich. In hisdissertation, initially supervised byWilhelm Wien and after Wien's death byEduard Rüchardt, he dealt with the charges of the mercury atoms in the canal jet (German:Ladungen der Quecksilberatome im Kanalstrahl).[1] With this work he was awarded aDoctorate of Philosophy.
On November 4, 1929, Jacobi joinedSiemens & Halske AG. He worked at the Siemens tube factory in Berlin, where he became head of the laboratory in 1934 and quickly rose further, becoming chief engineer in 1937 and authorized representative in 1938. Shortly after his appointment to the authorized signatory in 1941, he was transferred to theWernerwerk für Funktechnik inVienna, where he became department director in 1944. In 1949, he briefly worked in theWernerwerk für Radiotechnik, then went to the Wernerwerk inErlangen. One of the most important of his more than 100 inventions, the "semiconductor amplifier", which he registered for apatent on April 15, 1949, was invented during this period.[2] This circuit, consisting of fivetransistors on asemiconductor serving as a carrier material, may be the firstintegrated circuit designated. However, it remained largely unknown and was not used commercially.
From 1946 to 1956 Jacobi played a key role in setting up the Siemens tube factories and then became the overall manager of the tube works. After he was appointed general representative in 1962, he retired in 1969. Up until his 68th birthday, he was available to the management of the building elements division for questions, then he left the company entirely.
TheTechnical University of Vienna awarded him the title ofhonorary doctorate[3] of the technical sciences “in recognition of his special achievements as a scientist and inventor in the field of electronic components and of electronic circuit technology."
The British electronics engineerGeoffrey Dummer is also often referred to as the inventor of the IC, although he only published his work three years after the Siemens patent application was filed.
{{cite web}}: CS1 maint: bot: original URL status unknown (link).