NL25668C - - Google Patents
Info
- Publication number
- NL25668C NL25668C NL25668DA NL25668C NL 25668 C NL25668 C NL 25668C NL 25668D A NL25668D A NL 25668DA NL 25668 C NL25668 C NL 25668C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B15/00—Suppression or limitation of noise or interference
- H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
- H04B15/04—Reducing interference from electric apparatus by means located at or near the interfering apparatus the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder
- H04B15/06—Reducing interference from electric apparatus by means located at or near the interfering apparatus the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder by local oscillators of receivers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/06—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes
- H03D7/08—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between the same two electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Superheterodyne Receivers (AREA)
- Optical Communication System (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US178476A US1820809A (en) | 1927-03-25 | 1927-03-25 | Electrical system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL25668C true NL25668C (en) |
Family
ID=22652687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL25668D NL25668C (en) | 1927-03-25 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1820809A (en) |
| DE (1) | DE510108C (en) |
| FR (1) | FR654193A (en) |
| NL (1) | NL25668C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE739095C (en) * | 1932-04-16 | 1944-01-19 | Opta Radio Ag | Mixing tube circuit for overlay receiver |
| NL88017C (en) * | 1949-02-16 | |||
| DE967593C (en) * | 1953-12-25 | 1957-11-28 | Max Braun Fa | Additive triode mixer for very high frequencies |
| DE1013332B (en) * | 1956-05-18 | 1957-08-08 | Telefunken Gmbh | Neutralization circuit for a self-oscillating mixer, e.g. in television receivers with channel switches |
| DE1022272B (en) * | 1956-12-19 | 1958-01-09 | Telefunken Gmbh | Self-oscillating mixer with triode for high frequencies, especially for TV bands in the decimeter wave range |
-
0
- NL NL25668D patent/NL25668C/xx active
-
1927
- 1927-03-25 US US178476A patent/US1820809A/en not_active Expired - Lifetime
-
1928
- 1928-03-23 DE DEI33909D patent/DE510108C/en not_active Expired
- 1928-03-24 FR FR654193D patent/FR654193A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE510108C (en) | 1930-10-16 |
| US1820809A (en) | 1931-08-25 |
| FR654193A (en) | 1929-04-03 |