GB609258A - Improvements in or relating to circuits for correcting the phase of electrical oscillations - Google Patents
Improvements in or relating to circuits for correcting the phase of electrical oscillationsInfo
- Publication number
- GB609258A GB609258A GB739546A GB739546A GB609258A GB 609258 A GB609258 A GB 609258A GB 739546 A GB739546 A GB 739546A GB 739546 A GB739546 A GB 739546A GB 609258 A GB609258 A GB 609258A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phase
- value
- constant
- inductive
- deviation
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
- H03H7/1758—Series LC in shunt or branch path
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0115—Frequency selective two-port networks comprising only inductors and capacitors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1708—Comprising bridging elements, i.e. elements in a series path without own reference to ground and spanning branching nodes of another series path
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
- H03H7/1766—Parallel LC in series path
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
609,258. Impedance networks. WHITE, E. L. C., and WATTON, W. L. March 9, 1946, No. 7395. [Class 40 (viii)] A bridged-T network is designed to neutralize phase - distortion, particularly that due to band-pass filters in television receivers, in which the frequency characteristic of the phase delay deviates from linearity skew-symmetrically, i.e. is an odd function of the frequency-deviation. The elements have the values shown in Fig. 1, where Z1, Z2 are impedances and c is a constant, the characteristic impedance R having a constant value -(Z1Z2). The case in which Z1 is inductive and Z2 capacitive, Fig. 3, (not shown), is worked out in the Specification and it is shown that for small deviations dp from a value po of the pulsatance, which is such that Z1-c=jr and that the phase delay is (- #) for all frequencies, there is a constant time delay (corresponding to a term 4#c.dp/po in the phase-deviation) together with a phasedelay proportional to (dp/po)<3>, which constitutes a correcting term, together with higher powers which are negligible. Equivalent lattice networks are given in Figs. 2, 4 (not shown). The phase characteristic depends on the value of c, which must be greater than unity unless Z1 is inductive, in which case negative mutual inductance can be introduced if necessary. Specification 342,307 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB739546A GB609258A (en) | 1946-03-09 | 1946-03-09 | Improvements in or relating to circuits for correcting the phase of electrical oscillations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB739546A GB609258A (en) | 1946-03-09 | 1946-03-09 | Improvements in or relating to circuits for correcting the phase of electrical oscillations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB609258A true GB609258A (en) | 1948-09-28 |
Family
ID=9832288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB739546A Expired GB609258A (en) | 1946-03-09 | 1946-03-09 | Improvements in or relating to circuits for correcting the phase of electrical oscillations |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB609258A (en) |
-
1946
- 1946-03-09 GB GB739546A patent/GB609258A/en not_active Expired
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