US1917697A - Tube transmitter circuit arrangement - Google Patents
Tube transmitter circuit arrangement Download PDFInfo
- Publication number
- US1917697A US1917697A US366582A US36658229A US1917697A US 1917697 A US1917697 A US 1917697A US 366582 A US366582 A US 366582A US 36658229 A US36658229 A US 36658229A US 1917697 A US1917697 A US 1917697A
- Authority
- US
- United States
- Prior art keywords
- circuit arrangement
- transmitter circuit
- tube
- tube transmitter
- condenser
- 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 - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/10—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being vacuum tube
Definitions
- This invention reates to thermionic devices and in particular to devices used in short wave communication.
- An object of this invention is to provide a thermionic generator which will not radiate waves at frequencies other than the desired frequency.
- Another object of this invention is to provide a novel thermionic signaling device in which means is provided to obviate the necessity of maintaining symmetrical capacity to ground effect between the circuits or portions thereof.
- Figure 1 shows one circuit arrangement of a thermionic device arranged in accordance with the present invention
- Figure 2 shows a modification of the arrangement shown in Figure 1.
- Another simple means according to the invention consists in connecting the currentsupply choke-coil D not directly with'Cg, but with a distinct condenser 0 which as a matter of fact, passes only the small radio frequency current leaking off by way of D so that the direct current lead A is really united with a point which has no radio fre quency potential. to ground.
- This circuit arrangement is illustrated in Figure 2. Choking and damping of lead A will then no longer be necessary.
- the identical scheme may be adopted when the oscillation circuit .with the condenser lead (potential divider) is connected in the grid circuit of the tube.
- Signaling means comprising, a thermionic tube device having acathode and cold electrodes, an oscillation circuit comprising a capacity and an inductance connected in parallel, means connecting adjacent ends of said capacity and said inductance to a cold electrode, means for applying direct current potential to said cold electrode including a choke coil connected at one end to a point intermediate the terminals of said inductance, capacitive means for connecting a point intermediate the terminals of said parallelcapacity to said cathode, and capacitive means for connecting the free end of said choke coil to said cathode, said last named capacitive means and connection being entirely separate from said first named capacitive connecting means.
Landscapes
- Transmitters (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE314534X | 1928-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1917697A true US1917697A (en) | 1933-07-11 |
Family
ID=6146447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US366582A Expired - Lifetime US1917697A (en) | 1928-06-30 | 1929-05-28 | Tube transmitter circuit arrangement |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1917697A (xx) |
| BE (1) | BE361596A (xx) |
| GB (1) | GB314534A (xx) |
| NL (1) | NL26645C (xx) |
-
0
- BE BE361596D patent/BE361596A/xx unknown
- NL NL26645D patent/NL26645C/xx active
-
1929
- 1929-05-28 US US366582A patent/US1917697A/en not_active Expired - Lifetime
- 1929-06-25 GB GB19493/29A patent/GB314534A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB314534A (en) | 1930-04-10 |
| BE361596A (xx) | |
| NL26645C (xx) |
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