Henry P. Hall: Difference between revisions
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! Literature link | ! Literature link | ||
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| [[1206-B]] || Unit Amplifier || 1953-11 | | [[1206-B]] || Unit Amplifier || 1953-11 GE | ||
|- | |- | ||
| [[1212-P2]] || One-Megacycle Filter || 1956-01 | | [[1212-P2]] || One-Megacycle Filter || 1956-01 GE | ||
|- | |- | ||
| [[1232-P2]] || Preamplifier || 1967-02 | | [[1232-P2]] || Preamplifier || 1967-02 GE | ||
|- | |- | ||
| [[1265-A]] || Adjustable DC Power Supply || [https://www.ietlabs.com/pdf/GR_Experimenters/1962/GenRad_Experimenter_May_1962.pdf 1962-05] | | [[1265-A]] || Adjustable DC Power Supply || [https://www.ietlabs.com/pdf/GR_Experimenters/1962/GenRad_Experimenter_May_1962.pdf 1962-05 GE] | ||
|- | |- | ||
| [[1417]] || Four-Terminal Capacitance Standard || 1978 catalog | | [[1417]] || Four-Terminal Capacitance Standard || [http://www.ietlabs.com/pdf/GR_Catalog/GenRad_Cat-1978.pdf 1978 catalog] | ||
|- | |- | ||
| [[1426]] || Four-Terminal Capacitance Standard || 1968-01 | | [[1426]] || Four-Terminal Capacitance Standard || 1968-01 GE | ||
|- | |- | ||
| [[1433]] || Decade Resistors || 1968-11 | | [[1433]] || Decade Resistors || 1968-11 GE | ||
|- | |- | ||
| [[1434]] || Decade Resistors || 1965-10 | | [[1434]] || Decade Resistors || 1965-10 GE | ||
|- | |- | ||
| [[1455]] || Decade Voltage Dividers || 1967-04 | | [[1455]] || Decade Voltage Dividers || 1967-04 GE | ||
|- | |- | ||
| [[1605]] || Impedance Comparator || 1954-04 | | [[1605]] || Impedance Comparator || 1954-04 GE | ||
|- | |- | ||
| [[1608]] || Impedance Bridge || 1962-03 | | [[1608]] || Impedance Bridge || 1962-03 GE | ||
|- | |- | ||
| [[1613-A]] || Capacitance Bridge || 1958-02 | | [[1613-A]] || Capacitance Bridge || 1958-02 GE | ||
|- | |- | ||
| [[1617-A]] || Capacitance Bridge || [https://www.ietlabs.com/pdf/GR_Experimenters/1966/GenRad_Experimenter_June_1966.pdf 1966-06] | | [[1617-A]] || Capacitance Bridge || [https://www.ietlabs.com/pdf/GR_Experimenters/1966/GenRad_Experimenter_June_1966.pdf 1966-06 GE] | ||
|- | |- | ||
| [[1633]] || Incremental Inductance Bridge || 1962-05 | | [[1633]] || Incremental Inductance Bridge || 1962-05 GE | ||
|- | |- | ||
| [[1644]] || Megohm Bridge || 1964-07 | | [[1644]] || Megohm Bridge || 1964-07 GE | ||
|- | |- | ||
| [[1650-A]] || Impedance Bridge || [https://archive.org/details/sim_general-radio-experimenter_1959-03_33_3 1959-03] | | [[1650-A]] || Impedance Bridge || [https://archive.org/details/sim_general-radio-experimenter_1959-03_33_3 1959-03 GE] | ||
|- | |- | ||
| [[1656]] || Impedance Bridge || 1970-03 | | [[1656]] || Impedance Bridge || 1970-03 GE | ||
|- | |- | ||
| [[ | | [[1657]] || Digibridge || 1976 | ||
|- | |- | ||
| [[ | | [[1658]] || Digibridge || 1976 | ||
|- | |- | ||
| [[1864-A]] || Megohmmeter || [https://www.ietlabs.com/pdf/GR_Experimenters/1969/GenRad_Experimenter_March-April_1969.pdf 1969-03] | | [[1666]] || Resistance Bridge || 1972 Autumn GR Today | ||
|- | |||
| [[1685]] || Digital Impedance Meter || 1973 | |||
|- | |||
| [[1686]] || Digital Capacitance Meter || | |||
|- | |||
| [[1687]] || 1 MHz Digibridge || | |||
|- | |||
| [[1688]] || Precision LC Digibridge || | |||
|- | |||
| [[1689]] || Precision Digibridge || | |||
|- | |||
| [[1862-C]] || Megohmmeter || 1963-07 GE | |||
|- | |||
| [[1863-A]] || Megohmmeter || [https://www.ietlabs.com/pdf/GR_Experimenters/1969/GenRad_Experimenter_March-April_1969.pdf 1969-03 GE] | |||
|- | |||
| [[1864-A]] || Megohmmeter || [https://www.ietlabs.com/pdf/GR_Experimenters/1969/GenRad_Experimenter_March-April_1969.pdf 1969-03 GE] | |||
|- | |- | ||
|} | |} | ||
[[Category:General Radio people]] | [[Category:General Radio people]] | ||
Revision as of 00:08, 19 December 2023
Henry Parsons Hall (June 28, 1928 - July 17, 2023) graduated from Williams College in 1949 and MIT in 1952 before joining General Radio as a co-op student in 1949.
He then worked for close to forty years for the same company until his retirement from GenRad in 1993 as a staff scientist.
He is credited with the design of the Digibridge instrument and invented the Orthonull mechanism (see 1650-A).
Hall was a Life Fellow of the IEEE and one of only three General Radio Fellows.
please expand bio
Links
- IET Labs Application Note, Henry Hall: Father of the Digibridge
- A New System for Measuring the Inductance of Iron-Core Coils. GenRad Experimenter Vol.36 No.5, May 1962 (1630-A, 1633-A)
- The Measurement of Electrolytic Capacitors. GenRad Experimenter Vol.40 No.6, June 1966 (1617-A)
Patents
- US Patent 2872639, Henry P Hall, Electrical bridge and method. Filed Oct. 10, 1956; Granted Feb. 3, 1959 (describing the Orthonull feature)
- US Patent 4342089, Henry P Hall, Method of and apparatus for automatic measurement of circuit parameters with microprocessor calculation techniques. Filed Dec 12, 1979; Granted July 27, 1982 (→ 1657)
- please extend list of patents
Instruments
| Instrument | Description | Literature link |
|---|---|---|
| 1206-B | Unit Amplifier | 1953-11 GE |
| 1212-P2 | One-Megacycle Filter | 1956-01 GE |
| 1232-P2 | Preamplifier | 1967-02 GE |
| 1265-A | Adjustable DC Power Supply | 1962-05 GE |
| 1417 | Four-Terminal Capacitance Standard | 1978 catalog |
| 1426 | Four-Terminal Capacitance Standard | 1968-01 GE |
| 1433 | Decade Resistors | 1968-11 GE |
| 1434 | Decade Resistors | 1965-10 GE |
| 1455 | Decade Voltage Dividers | 1967-04 GE |
| 1605 | Impedance Comparator | 1954-04 GE |
| 1608 | Impedance Bridge | 1962-03 GE |
| 1613-A | Capacitance Bridge | 1958-02 GE |
| 1617-A | Capacitance Bridge | 1966-06 GE |
| 1633 | Incremental Inductance Bridge | 1962-05 GE |
| 1644 | Megohm Bridge | 1964-07 GE |
| 1650-A | Impedance Bridge | 1959-03 GE |
| 1656 | Impedance Bridge | 1970-03 GE |
| 1657 | Digibridge | 1976 |
| 1658 | Digibridge | 1976 |
| 1666 | Resistance Bridge | 1972 Autumn GR Today |
| 1685 | Digital Impedance Meter | 1973 |
| 1686 | Digital Capacitance Meter | |
| 1687 | 1 MHz Digibridge | |
| 1688 | Precision LC Digibridge | |
| 1689 | Precision Digibridge | |
| 1862-C | Megohmmeter | 1963-07 GE |
| 1863-A | Megohmmeter | 1969-03 GE |
| 1864-A | Megohmmeter | 1969-03 GE |