GB735915A - Improvements in or relating to alternating current bridges - Google Patents
Improvements in or relating to alternating current bridgesInfo
- Publication number
- GB735915A GB735915A GB976253A GB976253A GB735915A GB 735915 A GB735915 A GB 735915A GB 976253 A GB976253 A GB 976253A GB 976253 A GB976253 A GB 976253A GB 735915 A GB735915 A GB 735915A
- Authority
- GB
- United Kingdom
- Prior art keywords
- admittance
- transformer
- standard
- transfer
- variable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R17/00—Measuring arrangements involving comparison with a reference value, e.g. bridge
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
735,915. Measuring bridges; transfer impedance and admittance measurements. WAYNE KERR LABORATORIES, Ltd., and CALVERT, R. April 2, 1954 [April 10, 1953], No. 9762/53. Class 37. In an A.C. bridge circuit for measuring the transfer admittance of a network given by I=YE where Y is the required admittance, E the input voltage and I the output current at fixed or variable frequencies, an A.C. energized input transformer 10 has a variably tapped secondary 12 energizing the unknown network 15 whose output current energizes the variably tapped primary 17 of output transformer 18; and also a variably tapped secondary 23 which is connected directly to an intermediately variable tap 21 of a second primary 22 of transformer 18, and also connected to a standard variable resistance 24 and a standard variable capacitance 25 the free ends of which are selectively connectible over switches 26, 27 to either end of the primary 22. The secondary of transformer 18 is connected to an unbalance detector and the standard variables are adjusted separately until the output is zero, when the transfer admittance of the network is equivalent to the transfer admittance of the standard variables combined with regard to the phase quadrant in which each is connected by switches 26, 27, multiplied by a factor dependent on the tapping positions of windings 12, 17 and 13, 22. The standard variable capacitance is replaceable by a corresponding variable inductance switched in phase opposition thereto, and the system is applicable to the determination of transfer impedance by energizing winding 17 not from the output current of the unknown network but from the current flowing thereto from winding 12.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB976253A GB735915A (en) | 1953-04-10 | 1953-04-10 | Improvements in or relating to alternating current bridges |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB976253A GB735915A (en) | 1953-04-10 | 1953-04-10 | Improvements in or relating to alternating current bridges |
Publications (1)
Publication Number | Publication Date |
---|---|
GB735915A true GB735915A (en) | 1955-08-31 |
Family
ID=9878294
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB976253A Expired GB735915A (en) | 1953-04-10 | 1953-04-10 | Improvements in or relating to alternating current bridges |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB735915A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1074150B (en) * | 1960-01-28 | Telefunken G.M.B.H., Berlin | Arrangement for measuring the transmission conductance of active quadrupoles in the high-frequency range with the aid of a measuring bridge, in particular for measuring the feedback conductance of HF transistors in a frequency range of 10-250 MHz |
-
1953
- 1953-04-10 GB GB976253A patent/GB735915A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1074150B (en) * | 1960-01-28 | Telefunken G.M.B.H., Berlin | Arrangement for measuring the transmission conductance of active quadrupoles in the high-frequency range with the aid of a measuring bridge, in particular for measuring the feedback conductance of HF transistors in a frequency range of 10-250 MHz |
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