GB1093643A - Dielectric amplifier using non-linear capacitors - Google Patents
Dielectric amplifier using non-linear capacitorsInfo
- Publication number
- GB1093643A GB1093643A GB1492165A GB1492165A GB1093643A GB 1093643 A GB1093643 A GB 1093643A GB 1492165 A GB1492165 A GB 1492165A GB 1492165 A GB1492165 A GB 1492165A GB 1093643 A GB1093643 A GB 1093643A
- Authority
- GB
- United Kingdom
- Prior art keywords
- input
- rectifier
- circuit
- amplifier
- linear
- 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
- H03F—AMPLIFIERS
- H03F11/00—Dielectric amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Networks Using Active Elements (AREA)
- Electrophonic Musical Instruments (AREA)
- Amplifiers (AREA)
Abstract
1,093,643. Dielectric amplifiers. CESKOSLOVENSK‡ AKADEMIE V•D. April 8, 1965 [April 8, 1964], No. 14921/65. Heading H3B. A differential amplifier using non-linear capacitors consists of two parallel-connected branches, each containing a coupling capacitor, C v1 and C v2 , Fig. 1, a non-linear capacitor C N1 , C N2 , and a load impedance Z 1 , Z 2 , there being an alternating current source G connected across the branches, and the two inputs being connected respectively through low-pass filters F 1 , F 2 , to the junctions a, b, between a coupling capacitor and a non-linear capacitor; the output is taken from the junctions e, f, each between a non-linear capacitor and a load impedance, and a rectifier U is connected between these junctions. The A.C. from the source G appears at the points e, f as a pulsed voltage, the size and shape of which (Fig. 2b, 2d, not shown), depends upon the D.C. bias applied to the non-linear capacitors by the input signals at a, b. The output of the amplifier is the result of subtracting the two signals at e, f (Fig. 2e, not shown), and the unidirectional voltage produced by the rectifier U is then proportional to the difference between the two input signals. The rectifier U may be a diode, Fig. 1, a rectifying circuit (Fig. 3, not shown), or a transformer and a bridge rectifier (Fig. 4, not shown). Alternatively, the load impedances may be constituted by the two halves of a centre-tapped transformer primary (Fig. 5, not shown), of which the secondary drives a rectifier circuit. The sensitivity and stability of the amplifier is improved by including one positive voltage feedback circuit (Fig. 6, not shown), connected to the input filter F 2 . The input capacity of an input (e.g. input 1) is increased by a positive feedback circuit (Fig. 7, not shown), connected to the junction g of two capacitors C<SP>1</SP>V 1 and C<SP>11</SP>V 1 which together constitute one coupling capacity C V1 . The linearity of the amplifier may be increased by a negative current feedback circuit wherein the input terminal H (Fig. 7, not shown), is connected to a point h in the transformer secondary circuit instead of to the point d in the primary circuit.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CS203364 | 1964-04-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1093643A true GB1093643A (en) | 1967-12-06 |
Family
ID=5356237
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1492165A Expired GB1093643A (en) | 1964-04-08 | 1965-04-08 | Dielectric amplifier using non-linear capacitors |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1229148B (en) |
GB (1) | GB1093643A (en) |
NL (1) | NL6504384A (en) |
-
1965
- 1965-04-02 DE DEC35502A patent/DE1229148B/en active Pending
- 1965-04-06 NL NL6504384A patent/NL6504384A/xx unknown
- 1965-04-08 GB GB1492165A patent/GB1093643A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1229148B (en) | 1966-11-24 |
NL6504384A (en) | 1965-10-11 |
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