US1943730A - Radio frequency short wave receiver - Google Patents

Radio frequency short wave receiver Download PDF

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Publication number
US1943730A
US1943730A US610799A US61079932A US1943730A US 1943730 A US1943730 A US 1943730A US 610799 A US610799 A US 610799A US 61079932 A US61079932 A US 61079932A US 1943730 A US1943730 A US 1943730A
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United States
Prior art keywords
circuit
short wave
tube
control electrode
coupled
Prior art date
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Expired - Lifetime
Application number
US610799A
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English (en)
Inventor
Hermanspann Paul
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefunken AG
Original Assignee
Telefunken AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Telefunken AG filed Critical Telefunken AG
Application granted granted Critical
Publication of US1943730A publication Critical patent/US1943730A/en
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D11/00—Super-regenerative demodulator circuits
    • H03D11/02—Super-regenerative demodulator circuits for amplitude-modulated oscillations
    • 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
    • H04B1/163—Special arrangements for the reduction of the damping of resonant circuits of receivers

Definitions

  • the super-regenerative tube 8 (pendulous tube 8) is connected to act as the oscillator for the ultra-audible pendulous frequency.
  • the audion tube is fed with the pendulous potential by way of the coupling coil 6.
  • Both the audio tube i, and tube 8 are of the indirectly heated type, and they receive their filament energy from the heating winding 9 of the network transformer 10.
  • the plate potential of tube 3 is supplied from the winding 11 of the network transformer 10 by 5 way of rectifier 12. For the filtering of the plate potential of this tube, two condensers l3 and 14 each of 4 mid.
  • FIG. 2 One embodiment disclosing the chance of using the rectifier tube at the same time for the purpose of producing the pendulous frequency is shown in Figure 2.
  • antenna so 1 by means of the coil 2 is coupled to the receiver circuit 3 tuned to an ultra short wave.
  • the voltage arising across the terminals of the receiving circuit is impressed upon the grid of the tube 4 connected to act as an audion.
  • the plate circuit of this tube consists of the tickler coil 5, the coupler coil 6 and af. transformer 18.
  • a circuit 17 tuned to the pendulous frequency, said circuit 17 being excited through regeneration by way of coil 6.
  • the denotations for the circuit elements of the power pack are the same as in Figure 1.
  • the rectifier tube a may, of course, be supplied also with direct current plate potential.
  • network supply for the set and the operation of the latter become particularly simple when the audion tube is not supplied with a direct current plate, in line with what is shown in the drawing. If the plate of the rectifier is fed with a direct current potential then the pendulous or periodic potential may be supplied also to the grid.
  • a super-regenerative ultra short wave circuit adapted to function on waves below ten meters comprising an electron discharge device having an anode and a control electrode, a source of alternating current for eiiecting the energization of the electrodes of said device, an input circuit coupled to said control electrode, a ieed-bacl connection from said anode to said input circuit,
  • an oscillatory circuit and an output circuit both being coupled to said feed-back connection.
  • a super-regenerative ultra short wave circuit adapted to function on waves below ten meters comprising an indirectly heated electron discharge device having an anode and a control electrode, a source of alternating current for effecting the energization of the electrodes of said device, an antenna coupled to said control electrode, a feed-back connection from said anode to said control electrode, an oscillatory circuit coupled to one of said electrodes, and an audio frequency utilization circuit coupled to said feed-back connection.
  • a super-regenerative ultra short wave circuit adapted to function on waves below ten meters comprising an indirectly heated electron discharge device having an anode and a control electrode, a source of alternating current for effecting the energization of the electrodes of said device, an antenna inductively coupled to said control electrode, a feed-back connection from said anode to said control electrode and inductively coupled thereto, an oscillatory circuit coupled to one of said electrodes, and an audio frequency utilization circuit inductively coupled to said feed-back connection.
  • a super-regenerative ultra short wave circuit adapted to function on waves below ten meters comprising an indirectly heated electron discharge device having an anode and a control electrode, a source of alternating current for effecting the energization of the electrodes of said device, an input circuit coupled to said control electrode, a feed-back connection from said anode to said input circuit, and an oscillating audion circuit arranged to generate super-audible frequencies whose output is coupled to said feed back connection, and a utilization circuit separately coupled to said feed-back connection.
  • a super-regenerative ultra short Wave circuit adapted to function on waves below ten meters comprising an indirectly heated electron discharge device having an anode and a control electrode, a source of alternating current for eliecting the energization of the electrodes of said device, an input circuit coupled to said control electrode, a feed-back connection from said anode to said input circuit, an oscillatory circuit comprising ind ance and capacity in parallel relationship in circuit both with said feed-back connection and said control electrode, and an output circuit coupled to said iced-back connection.
  • a super-regenerative ultra short wave circuit adapted to function on waves below ten meters comprising an indirectly heated electron discharge device having an anode and a control electrode, a source of alternating current for efiecting the enei "ization of the electrodes of said device, an antenna cicuit coupled to said control electrode, feed-back connection from said anode to said input circuit, said feed-back connection being coupled to said source through an impedance network and a r ctifier tube, said rectifier tube being in circuit with a transformer across said sou cc of alternating current supply, impedance network being arranged to smooth out the current from said rectifier tube, an oscillatory circuit comprising an inductance and a capacity in parallel relationship in circuit with said control electrode and inductively coupled to said connection, and an audio ire quency utilisation circuit separately coupled to said feed-back connection.
  • a super-regenerative radio receiving circuit comprising electron discharge device having a cathode, an anode and a control electrode, an
  • a super-regenerative radio receiving circuit comprising an electron discharge device having a cathode, an anode a control electrode, an input circuit coupled to said cathode and control electrode, a feed back connection from said anode to said input circuit, said feed back connection conductively extending to through two inductance coils, an audio frequency output circuit coupled to one inductance coil, and a super-audible oscillatory circuit coupled to the other coil.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Rectifiers (AREA)
  • Amplifiers (AREA)
  • Circuits Of Receivers In General (AREA)
US610799A 1931-05-13 1932-05-12 Radio frequency short wave receiver Expired - Lifetime US1943730A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES98682D DE612824C (de) 1931-05-13 1931-05-13 Roehrenempfangsschaltung mit Rueckkopplung

Publications (1)

Publication Number Publication Date
US1943730A true US1943730A (en) 1934-01-16

Family

ID=7521648

Family Applications (1)

Application Number Title Priority Date Filing Date
US610799A Expired - Lifetime US1943730A (en) 1931-05-13 1932-05-12 Radio frequency short wave receiver

Country Status (6)

Country Link
US (1) US1943730A (enrdf_load_html_response)
AT (1) AT134506B (enrdf_load_html_response)
BE (1) BE388463A (enrdf_load_html_response)
CH (1) CH166616A (enrdf_load_html_response)
DE (1) DE612824C (enrdf_load_html_response)
FR (1) FR735166A (enrdf_load_html_response)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1002794B (de) * 1954-03-26 1957-02-21 Philips Nv Gegengekoppelter Transistorverstaerker

Also Published As

Publication number Publication date
CH166616A (de) 1934-01-15
FR735166A (fr) 1932-11-04
DE612824C (de) 1935-05-06
BE388463A (enrdf_load_html_response)
AT134506B (de) 1933-08-25

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