Harold Stephen Black American Inventor
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Harold Stephen Black is a member of the following lists: 1983 deaths, 1898 births and American inventors.
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Details
| First Name |
Harold
|
| Middle Name |
Stephen
|
| Last Name |
Black
|
| Birthday |
14th April, 1898
|
| Birthplace |
Leominster, Massachusetts
|
| Died |
11th December, 1983
|
| Place of Death |
Summit, New Jersey
|
| Zodiac Sign |
Aries
|
| Nationality |
American
|
| Occupation |
Inventor
|
Harold Stephen Black (April 14, 1898 – December 11, 1983) was an American electrical engineer, who revolutionized the field of applied electronics by discovering the negative feedback amplifier in 1927. To some, his discovery is considered the most important breakthrough of the twentieth century in the field of electronics, since it has a wide area of application. This is because all electronic devices (vacuum tubes, bipolar transistors and MOS transistors) are inherently nonlinear, but they can be made substantially linear with the application of negative feedback. Negative feedback works by sacrificing gain for higher linearity (or in other words, smaller distortion/intermodulation). By sacrificing gain, it also has an additional effect of increasing the bandwidth of the amplifier. However, a negative feedback amplifier can be unstable such that it may oscillate. Once the stability problem is solved, the negative feedback amplifier is extremely useful in the field of electronics. Black published a famous paper, Stabilized feedback amplifiers, in 1934.
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