GB741913A - Improvements in or relating to additive mixing circuits - Google Patents
Improvements in or relating to additive mixing circuitsInfo
- Publication number
- GB741913A GB741913A GB30314/53A GB3031453A GB741913A GB 741913 A GB741913 A GB 741913A GB 30314/53 A GB30314/53 A GB 30314/53A GB 3031453 A GB3031453 A GB 3031453A GB 741913 A GB741913 A GB 741913A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anode
- valve
- circuit
- triode
- frequency
- 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
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Abstract
741,913. Frequency changing circuits. TELE FUNKEN GES., [formerly TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE]. Nov. 3, 1953 [Nov. 3, 1952], No. 30314/53. Class 40 (6). A frequency changer comprises a triode valve arranged to oscillate and to additively mix the oscillations produced with an incoming signal, the anode of the triode being connected to the cathode of a grounded grid stage having an output circuit from which oscillations are derived having a frequency different from that of the oscillator and the signal. Valve 4 has a feed-back circuit 21, 22, 23, to cause it to oscillate and an input signal is applied to the zero potential point of the circuit. The anode of the valve is connected to a further triode valve 8 having an intermediate frequency output circuit connected to its anode. The oscillator tuned circuit may alternatively be connected between grid and cathode and coupled by a coil to the anode (Fig. 1, not shown) and the two valves may be connected in parallel with respect to the D.C. supply instead of in series (Fig.s 2 and 4, not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE741913X | 1952-11-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB741913A true GB741913A (en) | 1955-12-14 |
Family
ID=6645271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30314/53A Expired GB741913A (en) | 1952-11-03 | 1953-11-03 | Improvements in or relating to additive mixing circuits |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR1085742A (en) |
| GB (1) | GB741913A (en) |
| NL (1) | NL182180B (en) |
-
0
- NL NLAANVRAGE7512229,A patent/NL182180B/en unknown
-
1953
- 1953-10-29 FR FR1085742D patent/FR1085742A/en not_active Expired
- 1953-11-03 GB GB30314/53A patent/GB741913A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL182180B (en) | |
| FR1085742A (en) | 1955-02-07 |
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