GB531187A - Control systems for radio receivers or other electric wave apparatus - Google Patents
Control systems for radio receivers or other electric wave apparatusInfo
- Publication number
- GB531187A GB531187A GB18960/39A GB1896039A GB531187A GB 531187 A GB531187 A GB 531187A GB 18960/39 A GB18960/39 A GB 18960/39A GB 1896039 A GB1896039 A GB 1896039A GB 531187 A GB531187 A GB 531187A
- Authority
- GB
- United Kingdom
- Prior art keywords
- control
- switch
- impulses
- impulse
- motor
- 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
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
- H03J5/14—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings operated by auxiliary power
- H03J5/146—Settings desired by a switch controlled together with the tuning member and which stops the control as soon as a desired position is reached
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/15—Intermittent grip type mechanical movement
- Y10T74/1526—Oscillation or reciprocation to intermittent unidirectional motion
- Y10T74/1553—Lever actuator
- Y10T74/1555—Rotary driven element
Landscapes
- Control Of Stepping Motors (AREA)
- Selective Calling Equipment (AREA)
Abstract
531,187. Electric control systems. PHILCO RADIO & TELEVISION CORPORATION. June 29, 1939, No. 18960. Convention date, July 20, 1938. [Class 40 (i)] [Also in Group XXXIX] A control system for a wireless receiver or other electric wave apparatus utilizes impulses one of which has controllable duration whereas the others are of fixed duration. The invention is desscribed in connection with distant inductive control of a wireless receiver in which certain impulse trains which include a long impulse of variable duration control a motor to drive the volume control in accordance with the duration of the impulse.and other regular impulse trains select tuning positions to which the tuner of the receiver is driven bv the motor. The transmitter, Fig. 2, comprises a tuned oscillator 13 keyed by a dial impulse transmitter 11 of ordinary type except that the finger plate has a projection 21 engagable by a press button 22 to prolong the last impulse (make) for any desired period. The filament circuit of the valve is made at contacts 18 when the dial is offnormal. The signals are transmitted inductively by means of coil 17. The receiver, Fig. 7, comprises coil 6, amplifying and rectifying valves 44, 46, 50, 61 which actuate the stepping magnet 69 of a switch 66, 67 which in its earlier positions controls increase or decrease of volume in accordance with the duration of a final impulse, and in its later positions marks contacts associated with a motor-driven tuning-control device of the gapped segment type. The tuning condenser 108, combined volume control potentiometer 40 and on-off switch 38, and muting contacts 112 are indicated in the small dotted rectangle. The power supply for the control system is connected up over a two-way switch 39 which if in the right-hand position, is effective only if the receiver switch 38 is on, but if 39 is in the left-hand position, the control system is energized independently of the receiver switch which may then be remotely controlled. The impulses which may be of 400 kc. are amplified at 44, 46 and rectified by valve 50 which is direct coupled to a further amplifier 60 having the stepping magnet in its anode circuit. Volume control increase or decrease is effected by sending two or three impulses, the last of which is prolonged in accordance with the volume desired. The first contact of wiper 70 is left blank for a purpose described later but this wiper, over contacts 2 and 3, energizes a circuit for motor 91 to drive the volume control potentiometer in one direction or the other, the on-off switch 38 being operated in one extreme position. In the first 3 positions of wiper 71, the prohibitive bias on valve 82 is removed and release magnet 75 in its anode circuit is operated but is not effective until the stepping magnet is released on termination of the prolonged impulse. The time constant of the grid circuit of valve 82 is such that the prohibitive bias is not removed during 3 short impulses, bias being obtained from the negative lead of the centre-point-grounded supply transformer secondary 27. In the case where energization of the control circuits is dependent on the receiver switch 38, the release arrangements function due to the charge on the smoothing condensers after switch 38 is open. Timing control. In response to 4 to 10 impulses, wiper 70 energizes the motor 91 over contacts such as 4c and wiper 71 energizes a clutch magnet 105 which gears the motor shaft to the tuning control shaft 107. The bias control circuit of valve 82 now passes over closed off-normal contacts 87 of the stepping switch and contacts 89 opened when the motor is running so that prohibitive bias is not removed until sometime after the motor is stopped whereupon the stepping switch is released. Minimizing the effects of disturbing impulses. The control signal receiving arrangements in addition to the sharply tuned signal frequency circuits are protected from operation by interfering impulses by (1) a filter 62, 65 having a time constant such that high pulse frequencies are attenuated (2) a blank first contact of the stepping switch which renders isolated single impulses ineffective (3) the feature that the prohibitive bias on the release control valve 82 is removed on long impulses and (4) condenser 121 at the power plug which is in addition to the usual filter at the receiver power supply equipment 35. Specification 531,190, [Group XXXIX], is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US220356A US2357237A (en) | 1938-07-20 | 1938-07-20 | Remote control system for radio receivers and the like |
Publications (1)
Publication Number | Publication Date |
---|---|
GB531187A true GB531187A (en) | 1940-12-31 |
Family
ID=22823226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB18960/39A Expired GB531187A (en) | 1938-07-20 | 1939-06-29 | Control systems for radio receivers or other electric wave apparatus |
Country Status (2)
Country | Link |
---|---|
US (1) | US2357237A (en) |
GB (1) | GB531187A (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2452878A (en) * | 1944-02-08 | 1948-11-02 | Colonial Radio Corp | Automatic tuning control circuit |
US2520631A (en) * | 1944-05-29 | 1950-08-29 | Frauenshuh Thomas Eugene | Radio tuning system |
US2582270A (en) * | 1945-01-12 | 1952-01-15 | Collins Radio Co | Control apparatus |
US2683869A (en) * | 1945-09-21 | 1954-07-13 | William C Norris | Automatic communication system |
US2604531A (en) * | 1946-12-21 | 1952-07-22 | Wurlitzer Co | Impulse remote control system |
US2903575A (en) * | 1955-05-06 | 1959-09-08 | Zenith Radio Corp | Control system |
US3183444A (en) * | 1960-03-22 | 1965-05-11 | Zenith Radio Corp | Remote control system |
US3678392A (en) * | 1970-10-12 | 1972-07-18 | Whirlpool Co | Tv remote control system |
KR102088173B1 (en) * | 2012-12-24 | 2020-03-12 | 삼성전자 주식회사 | Electronic device and control method for the same |
-
1938
- 1938-07-20 US US220356A patent/US2357237A/en not_active Expired - Lifetime
-
1939
- 1939-06-29 GB GB18960/39A patent/GB531187A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2357237A (en) | 1944-08-29 |
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