GB365011A - Improvements in or relating to thermionic amplifiers - Google Patents
Improvements in or relating to thermionic amplifiersInfo
- Publication number
- GB365011A GB365011A GB18390/31A GB1839031A GB365011A GB 365011 A GB365011 A GB 365011A GB 18390/31 A GB18390/31 A GB 18390/31A GB 1839031 A GB1839031 A GB 1839031A GB 365011 A GB365011 A GB 365011A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- plate
- grid
- rectifier
- voltage
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/1607—Supply circuits
- H04B1/1623—Supply circuits using tubes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/42—Modifications of amplifiers to extend the bandwidth
- H03F1/48—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers
- H03F1/50—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers with tubes only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/22—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with tubes only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Air Bags (AREA)
Abstract
365,011. Valve amplifying and detecting circuits. BREY, H. W. K. DE, 93, Willem de Zwijgerlaan, The Hague. June 25, 1931, No. 18390. Convention date, July 11, 1930. [Class 40 (v).] In a direct-coupled valve amplifier (plate of first valve connected directly to grid of second valve), two separate sources of plate voltage are employed, the main source serving to supply both valves whilst the auxiliary source supplies additional plate voltage to the first valve only. As shown in the Figure, the first valve I is of t h e screen-grid type, and its plate is connected directly to the grid of the triode valve II, the plate circuit of the valve I including a high resistance 1. The second valve has its plate voltage supplied by a transformer 4, rectifier 6, and smoothing circuit 7, 8. An auxiliary source of plate voltage comprising transformer 3, rectifier 5, and smoothing circuit 11, 12, 12<1> creates a D.C. voltage at the points C, D which is added to that supplied by the other rectifier across the points D, E, and is applied across the cathode and plate of the first valve I. The common lead D of the two rectifying-systems is connected to the cathode of the second valve II. Thus the rectifier 6 supplies the heavy current required by the output valve, whilst the two rectifiers 5, 6 connected in series supply a higher voltage, but only a slight current, as required by the first valve I. An additional smoothing circuit 9, 9<1>, 10, 10<1> is included in the lead to the first valve. Grid bias for the valve I is provided by a resistance 13 in the cathode lead, and the screen grid is polarized by a connection to the lead D through a resistance 19. A single transformer may replace the separate units 3, 4 ; and the smoothing elements 7, 9, 91 may be connected in parallel, Fig. 3 (not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL365011X | 1930-07-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB365011A true GB365011A (en) | 1932-01-14 |
Family
ID=19785468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB18390/31A Expired GB365011A (en) | 1930-07-11 | 1931-06-25 | Improvements in or relating to thermionic amplifiers |
Country Status (5)
Country | Link |
---|---|
US (1) | US1986554A (en) |
DE (1) | DE619231C (en) |
FR (1) | FR719189A (en) |
GB (1) | GB365011A (en) |
NL (1) | NL31404C (en) |
-
0
- NL NL31404D patent/NL31404C/xx active
-
1930
- 1930-11-23 DE DE1930619231D patent/DE619231C/en not_active Expired
-
1931
- 1931-06-25 GB GB18390/31A patent/GB365011A/en not_active Expired
- 1931-06-26 FR FR719189D patent/FR719189A/en not_active Expired
- 1931-07-03 US US548664A patent/US1986554A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US1986554A (en) | 1935-01-01 |
FR719189A (en) | 1932-02-02 |
NL31404C (en) | |
DE619231C (en) | 1935-09-27 |
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