GB539596A - Arrangement of amplifier for producing negative admittance - Google Patents
Arrangement of amplifier for producing negative admittanceInfo
- Publication number
- GB539596A GB539596A GB8450/40A GB845040A GB539596A GB 539596 A GB539596 A GB 539596A GB 8450/40 A GB8450/40 A GB 8450/40A GB 845040 A GB845040 A GB 845040A GB 539596 A GB539596 A GB 539596A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bridge
- amplifier
- parallel
- diagonal
- regenerative feedback
- 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
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D1/00—Demodulation of amplitude-modulated oscillations
- H03D1/08—Demodulation of amplitude-modulated oscillations by means of non-linear two-pole elements
- H03D1/10—Demodulation of amplitude-modulated oscillations by means of non-linear two-pole elements of diodes
- H03D1/12—Demodulation of amplitude-modulated oscillations by means of non-linear two-pole elements of diodes with provision for equalising ac and dc loads
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Amplifiers (AREA)
Abstract
539,596. Thermionic valve circuits. STANDARD TELEPHONES & CABLES, Ltd. May 10, 1940. No. 8450. Convention date, June 30, 1939. [Class 40 (v)] A negative admittance is presented to an external circuit by arranging an amplifier with a bridge in parallel with the output with the input taken from across the opposite diagonal of the bridge and the external circuit constituting one of the arms of the bridge. Fig. 1 shows a diode detector 1 with a direct current load 3 having resistance 4 and condenser 5 in parallel to form the alternating. current load. The detector load with resistances N, P, Q forms a bridge with the input to amplifier t 1 across one diagonal and regenerative feedback applied to the other diagonal. In a modification Fig. 2 regenerative feedback is applied by a potentiometer formed by the detector load and resistance P<SP>1</SP> while a parallel potentiometer M<SP>1</SP>, N<SP>1</SP> gives regenerative feedback.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US282055A US2287280A (en) | 1939-06-30 | 1939-06-30 | Detection arrangement and negative impedance for same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB539596A true GB539596A (en) | 1941-09-17 |
Family
ID=23079913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8450/40A Expired GB539596A (en) | 1939-06-30 | 1940-05-10 | Arrangement of amplifier for producing negative admittance |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2287280A (en) |
| GB (1) | GB539596A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2424847A (en) * | 1943-10-04 | 1947-07-29 | Zenith Radio Corp | Amplifier circuit |
| US2426680A (en) * | 1944-01-13 | 1947-09-02 | Zenith Radio Corp | Control for discharge devices |
| NL192904A (en) * | 1954-03-22 | |||
| CN110768637B (en) * | 2018-07-27 | 2023-08-01 | 宏碁股份有限公司 | Signal gain control method and electronic device |
-
1939
- 1939-06-30 US US282055A patent/US2287280A/en not_active Expired - Lifetime
-
1940
- 1940-05-10 GB GB8450/40A patent/GB539596A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2287280A (en) | 1942-06-23 |
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