DE641603C - Receiver with loss compensation, in which the control voltage is taken from the anode of the receiving rectifier - Google Patents
Receiver with loss compensation, in which the control voltage is taken from the anode of the receiving rectifierInfo
- Publication number
- DE641603C DE641603C DET40095D DET0040095D DE641603C DE 641603 C DE641603 C DE 641603C DE T40095 D DET40095 D DE T40095D DE T0040095 D DET0040095 D DE T0040095D DE 641603 C DE641603 C DE 641603C
- Authority
- DE
- Germany
- Prior art keywords
- anode
- control voltage
- receiver
- voltage
- rectifier
- 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
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
- H03G3/20—Automatic control
- H03G3/22—Automatic control in amplifiers having discharge tubes
Description
Bei hochwertigen Empfangsgeräten ist es wünschenswert, zum Zwecke des Ausgleichs der Lautstärkeschwankungen eine Fadingregulierung einzubauen. Derartige Anordnungen sind bekannt und beruhen darauf, daß beim Steigen der Hochfrequenzspann'ung am Gleichrichtergitter der Anodenstnom des Gleichrichters ansteigt und seme Anodenspannung infolge des erhöhten SpanmmgsabfallesWith high quality receiving equipment it is desirable for the purpose of compensation to incorporate a fading regulation of the volume fluctuations. Such arrangements are known and are based on the fact that when the high frequency voltage increases Rectifier grid the anode voltage of the rectifier increases and its anode voltage due to the increased voltage drop
to am Anodenwiderstand abfällt. Die an der Anode des Gleichrichters auftretenden Spannungsänderungen werden zur Regelung der Gitter vorspannung der Ho chfrequenzr Öhren benutzt.to drops at the anode resistor. The voltage changes occurring at the anode of the rectifier are used to regulate the grid bias of the high frequency tubes used.
Damit an das Gitter der geregelten Röhre nicht die Anodenspannung der Gleichrichterröhre gelangt, hat man bisher entweder eine Kompensationsbatterie eingeschaltet oder den Kathoden der geregelten Röhre ein gegenüber der Kathode des Gleichrichters positives Potential gegeben. Das erste Verfahren ist umständlich, und das zweite Verfahren hat ■■■■■ den Nachteil, daß entweder die Anodenspannung der geregelten Röhre gering ist oder daß eine besonders hohe Gesamtanodenspannung vorgesehen sein muß.So that the anode voltage of the rectifier tube is not applied to the grid of the regulated tube reached, you have either switched on a compensation battery or the The cathode of the regulated tube is positive compared to the cathode of the rectifier Given potential. The first method is cumbersome and the second method has ■■■■■ the disadvantage that either the anode voltage the regulated tube is low or that a particularly high total anode voltage must be provided.
Nach der Erfindung wird' ein Empfänger mit Schwundausgleich, bei dem die Regelspannung an der Anode des Empfangsgleichrichters abgenommen wird und die Kathoden der zu regelnden Röhren ein gegenüber den übrigen Kathoden positives Potential erhalten,, in der Weise verbessert, daß die Regelspannung von einem zwischen der Anode der Gleichrichterröhre und dem negativen Pol der Anodenspannungsquelle liegenden zusätzlichen Potentiometer abgenommen wird. Hierdurch wird erreichtj daß zur Erzielung einer negativen Gittervorspannung der geregelten Röhren deren Kathoden weniger stark in ihrem Potential angehoben zu werden brauchen.According to the invention 'a receiver with fading compensation, in which the control voltage is removed at the anode of the receiving rectifier and the cathodes of the tubes to be controlled are opposite the remaining cathodes receive positive potential, in such a way that the control voltage is improved of an additional one lying between the anode of the rectifier tube and the negative pole of the anode voltage source Potentiometer is removed. This achieves that to achieve a negative grid bias of the regulated tubes whose cathodes are less strong in need to be raised to their potential.
In der Abbildung ist ein Ausführungsbeispiel für die Erfindung dargestellt.In the figure, an embodiment of the invention is shown.
Parallel zur Gleichrichterröhre 1 befindet sich ein aus den hochohmigen Widerständen 2 und 3 bestehender hoebjohmiger Spannungsteiler. Ein Teil der Spannung, die an der Gleichrichterröhre liegt, wird zum Gitter der Hochfrequenzverstärkerröhre 4 geführt. Da dieses dadurch positiv vorgespannt sein würde, ist es notwendig, eine negative Kompensationsspannung einzuführen. Dieses wird in an sich bekannter Weise dadurch erreicht, daß die emittierende Schicht der indirekt geheizten Kathode der Hochfrequenzverstärkerröhre von einem aus den Widerständen 5 und 6 bestehenden Potentiometer, welchesIn parallel with the rectifier tube 1 there is one of the high-resistance resistors 2 and 3 existing hoebjohmiger voltage divider. Part of the voltage that is applied to the rectifier tube is fed to the grid of the high-frequency amplifier tube 4. Since this would be biased positively, it is necessary to use a negative compensation voltage to introduce. This is achieved in a manner known per se in that the emitting layer of the indirectly heated Cathode of the high frequency amplifier tube from a potentiometer consisting of resistors 5 and 6, which
Von dem Patentsucher ist als der Erfinder angegeben worden:The patent seeker stated as the inventor:
Dr-Ing. Guido Anders in Berlin.Dr-Ing. Guido Anders in Berlin.
parallel zur Gleichspannungsquelle liegt, eine positive Vorspannung erhält, die jedoch wegen des erfindungsgemäß angeschalteten Potentiometers 2, 3 geringer als bei den bekannteii-Schaltungen ist.is parallel to the DC voltage source, receives a positive bias, but because of of the potentiometer 2, 3 connected according to the invention less than in the case of the known circuits is.
Damit zwischen emittierender Schicht und· Heizfaden keine, unter Umständen für die Röhre schädliche größere Spannung besteht, ist es zweckmäßig, durch Aufbringen einerSo that there is no between the emitting layer and the filament, possibly for the If there is a detrimental greater tension in the tube, it is expedient by applying a
ίο besonderen Heizwicklung auf den Netztransformator diese Gefahr zu beseitigen.ίο special heating winding on the mains transformer to eliminate this danger.
Um eine intensivere Regulierung zu erreichen, kann auch die Gittervorspannung der Zwischenfrequenzverstärkerröhre zugleich mit der Gittervorspannung der ersten Hochfrequenzröhre beeinflußt werden.In order to achieve a more intensive regulation, the grid pre-tensioning can also be used of the intermediate frequency amplifier tube at the same time as the grid bias of the first high frequency tube to be influenced.
Der Einfluß verschiedener Röhrenexemplare macht sich im wesentlichen nur bei der Gleichrichterröhre bemerkbar. Diese Röhre muß zur Erzielung der günstigsten Gittervorspannungen der zu regelnden Röhren einen bestimmten Anodenstromwert haben. Dieser wird zur Einstellung der Gittervorspannung durch das Potentiometer o. dgl. erzielt.The influence of different tube specimens is essentially only evident in the rectifier tube noticeable. This tube must have a certain value in order to achieve the most favorable grid pre-tension of the tubes to be controlled Have anode current value. This is achieved by means of the potentiometer or the like for setting the grid bias.
Claims (3)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DET41698D DE653428C (en) | 1932-01-22 | Receiver with loss compensation | |
| DET40095D DE641603C (en) | 1932-01-22 | 1932-01-22 | Receiver with loss compensation, in which the control voltage is taken from the anode of the receiving rectifier |
| FR746254D FR746254A (en) | 1932-01-22 | 1932-11-23 | Improvements to methods of mounting indirect heating lamps, including a fading compensation device |
| FR44034D FR44034E (en) | 1932-01-22 | 1933-10-04 | Improvements to methods of mounting indirect heating lamps incorporating a fading compensation device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DET41698D DE653428C (en) | 1932-01-22 | Receiver with loss compensation | |
| DET40095D DE641603C (en) | 1932-01-22 | 1932-01-22 | Receiver with loss compensation, in which the control voltage is taken from the anode of the receiving rectifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE641603C true DE641603C (en) | 1937-02-06 |
Family
ID=34712161
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DET41698D Expired DE653428C (en) | 1932-01-22 | Receiver with loss compensation | |
| DET40095D Expired DE641603C (en) | 1932-01-22 | 1932-01-22 | Receiver with loss compensation, in which the control voltage is taken from the anode of the receiving rectifier |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DET41698D Expired DE653428C (en) | 1932-01-22 | Receiver with loss compensation |
Country Status (1)
| Country | Link |
|---|---|
| DE (2) | DE641603C (en) |
-
0
- DE DET41698D patent/DE653428C/en not_active Expired
-
1932
- 1932-01-22 DE DET40095D patent/DE641603C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE653428C (en) | 1937-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE641603C (en) | Receiver with loss compensation, in which the control voltage is taken from the anode of the receiving rectifier | |
| DE2204453B2 (en) | X-RAY DIAGNOSTIC APPARATUS WITH AN IMAGE AMPLIFIER TELEVISION CHAIN AND A CONTROL CIRCUIT ADJUSTING THE DOSE PERFORMANCE ACCORDING TO THE PATIENT | |
| DE916542C (en) | Voltage and current regulator | |
| AT146911B (en) | Circuit arrangement for regulating the transmission rate. | |
| AT135815B (en) | Receiving circuit for indirectly heated tubes with an arrangement for fading regulation. | |
| DE905617C (en) | Method for amplifying weak direct currents | |
| DE589696C (en) | Procedure for avoiding the distortion factor in modulated tube transmitters by compensating for the distortion by means of rectified, modulated high frequency | |
| DE716233C (en) | Device for regulating the direct current power of arc rectifiers with control electrodes | |
| DE851517C (en) | Arrangement to compensate for mains voltage fluctuations in tube regulators in the manner of direct current amplifiers | |
| DE551703C (en) | Device for smoothing the pulsations of a direct current generated from an alternating voltage by means of rectifier tubes | |
| DE652261C (en) | Back-coupled amplifier circuit | |
| DE970543C (en) | Arrangement for automatic gain control with the help of a pilot voltage | |
| AT137625B (en) | Process for the temporary reduction of the total voltage of two or more rectifier groups connected in series, especially for radio broadcasters. | |
| DE844923C (en) | Feedback DC amplifier | |
| AT147324B (en) | Arrangement for push-pull modulation of a high frequency generator. | |
| DE898457C (en) | Method for one-button contrast control in television receivers | |
| DE931120C (en) | Method and device for generating a measuring or regulating voltage by logarithmic deformation of an alternating voltage | |
| DE749646C (en) | Modulation arrangement with series connection of the modulating tubes and the modulated high-frequency tubes | |
| DE562304C (en) | Circuit for eliminating the humming noises caused by AC mains heating in receiver tubes | |
| DE579926C (en) | Feedback tube generator with double grid tubes for generating vibrations of the second kind | |
| AT144198B (en) | Amplifier circuit with feedback. | |
| DE675600C (en) | Arrangement for the magnetic deflection of cathode rays | |
| DE760203C (en) | Modulation arrangement | |
| DE1129601B (en) | Voltage or current regulator for alternating current with a transmission system and electron tubes or transistors connected in opposition in parallel as actuators | |
| DE728730C (en) | Stabilization of magnetron transmitters |