Pub Date : 1961-07-01DOI: 10.1109/TBTR2.1961.4503157
S. Talesnick, S. Yando
A new solid-state display device utilizing certain unique properties of piezoelectric and electroluminescent materials is described and the principles of operation are reviewed. The device requires only four properly timed electrical inputs to produce a spot of light at any selected point on the display panel. The timing relationships are derived and a system capable of producing the required drive signals is described. Oscilloscope patterns are generated on the panel by a point-by-point plot of suitably processed X-and Y-input signals.
{"title":"A Solid State Oscilloscope Display","authors":"S. Talesnick, S. Yando","doi":"10.1109/TBTR2.1961.4503157","DOIUrl":"https://doi.org/10.1109/TBTR2.1961.4503157","url":null,"abstract":"A new solid-state display device utilizing certain unique properties of piezoelectric and electroluminescent materials is described and the principles of operation are reviewed. The device requires only four properly timed electrical inputs to produce a spot of light at any selected point on the display panel. The timing relationships are derived and a system capable of producing the required drive signals is described. Oscilloscope patterns are generated on the panel by a point-by-point plot of suitably processed X-and Y-input signals.","PeriodicalId":136909,"journal":{"name":"Ire Transactions on Broadcast and Television Receivers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116629298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1961-07-01DOI: 10.1109/TBTR2.1961.4503159
A. Devries
From the FM discriminator in the receiver we derive the composite signal containing a low frequency audio signal, a modulated subcarrier and a pilot signal related to the subcarrier. The stereophonic signal demodulator can operate on the composite signal in such fashion as to produce directly a left and right stereophonic signal.
{"title":"Design of Stereophonic Receiver for a Stereo System in the FM Band using an AM Subcarrier","authors":"A. Devries","doi":"10.1109/TBTR2.1961.4503159","DOIUrl":"https://doi.org/10.1109/TBTR2.1961.4503159","url":null,"abstract":"From the FM discriminator in the receiver we derive the composite signal containing a low frequency audio signal, a modulated subcarrier and a pilot signal related to the subcarrier. The stereophonic signal demodulator can operate on the composite signal in such fashion as to produce directly a left and right stereophonic signal.","PeriodicalId":136909,"journal":{"name":"Ire Transactions on Broadcast and Television Receivers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122921463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1961-07-01DOI: 10.1109/TBTR2.1961.4503148
Harold J. Benzuly
The operation of and design approaches to mechanical and piezoelectric electric wave filters are discussed. The literature is reviewed and typical values for resonator and filter characteristics are presented.
{"title":"Some Considerations in the Application of Mechanical and Piezoelectric Filters","authors":"Harold J. Benzuly","doi":"10.1109/TBTR2.1961.4503148","DOIUrl":"https://doi.org/10.1109/TBTR2.1961.4503148","url":null,"abstract":"The operation of and design approaches to mechanical and piezoelectric electric wave filters are discussed. The literature is reviewed and typical values for resonator and filter characteristics are presented.","PeriodicalId":136909,"journal":{"name":"Ire Transactions on Broadcast and Television Receivers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131437544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1961-07-01DOI: 10.1109/TBTR2.1961.4503153
T. F. Gossard, W. G. Delp, J. F. Stolte
A brief review of the performance requirements and other factors influencing the design of VHF television tuners is presented, including some of the unforeseen problems encountered during development of a new design. The basic electrical similarity between tuners of different manufacturers is pointed out, which suggests that significant design improvement might best be obtained by concentrating attention on mechanical rather than electrical factors. Development of a new compact tuner was begun with maximum use of molded plastic parts, reduction of the number of mechanical parts, and suitability for automatic production techniques as the main design objectives. A final design was completed and the tuner is now in production. A description of the novel features of this tuner indicates how the design objectives were reached and greater product uniformity and lower costs realized.
{"title":"A New Compact VHF TV Tuner","authors":"T. F. Gossard, W. G. Delp, J. F. Stolte","doi":"10.1109/TBTR2.1961.4503153","DOIUrl":"https://doi.org/10.1109/TBTR2.1961.4503153","url":null,"abstract":"A brief review of the performance requirements and other factors influencing the design of VHF television tuners is presented, including some of the unforeseen problems encountered during development of a new design. The basic electrical similarity between tuners of different manufacturers is pointed out, which suggests that significant design improvement might best be obtained by concentrating attention on mechanical rather than electrical factors. Development of a new compact tuner was begun with maximum use of molded plastic parts, reduction of the number of mechanical parts, and suitability for automatic production techniques as the main design objectives. A final design was completed and the tuner is now in production. A description of the novel features of this tuner indicates how the design objectives were reached and greater product uniformity and lower costs realized.","PeriodicalId":136909,"journal":{"name":"Ire Transactions on Broadcast and Television Receivers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116762034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1961-07-01DOI: 10.1109/TBTR2.1961.4503149
E. Boden
{"title":"A Second Progress Report on TV-Receiver Reliability","authors":"E. Boden","doi":"10.1109/TBTR2.1961.4503149","DOIUrl":"https://doi.org/10.1109/TBTR2.1961.4503149","url":null,"abstract":"","PeriodicalId":136909,"journal":{"name":"Ire Transactions on Broadcast and Television Receivers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121103283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1961-07-01DOI: 10.1109/TBTR2.1961.4503155
E. Aupperle, T. W. Butler
The capability of rapid frequency selection coupled with crystal controlled tuning accuracy are the salient features of this solid-state receiver. The heart of the system is a discrete local oscillator. It consists of an electronically tuned oscillator which is phase-locked to a selected harmonic of a master crystal. Since there are no mechanical adjustments necessary, the receiver can be built in a small, light-weight package.
{"title":"A Precision-Tuned Receiver Employing Solid-State Tuning Elements","authors":"E. Aupperle, T. W. Butler","doi":"10.1109/TBTR2.1961.4503155","DOIUrl":"https://doi.org/10.1109/TBTR2.1961.4503155","url":null,"abstract":"The capability of rapid frequency selection coupled with crystal controlled tuning accuracy are the salient features of this solid-state receiver. The heart of the system is a discrete local oscillator. It consists of an electronically tuned oscillator which is phase-locked to a selected harmonic of a master crystal. Since there are no mechanical adjustments necessary, the receiver can be built in a small, light-weight package.","PeriodicalId":136909,"journal":{"name":"Ire Transactions on Broadcast and Television Receivers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126907276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1961-07-01DOI: 10.1109/TBTR2.1961.4503152
L. A. Weldon
This paper describes a unique method for specifying the gain control characteristics of high frequency transistors over their entire AGC range. The forward gain control characteristics of transistors can be measured by means of a curve tracer to permit the specification, within published limits, of the high frequency power gain versus collector to emitter voltage curve. While this report describes the specification of forward gain control characteristics the system can also be used for reverse gain control specifications.
{"title":"A Complete Specification of the Gain Control Characteristics of RF And IF Transistors","authors":"L. A. Weldon","doi":"10.1109/TBTR2.1961.4503152","DOIUrl":"https://doi.org/10.1109/TBTR2.1961.4503152","url":null,"abstract":"This paper describes a unique method for specifying the gain control characteristics of high frequency transistors over their entire AGC range. The forward gain control characteristics of transistors can be measured by means of a curve tracer to permit the specification, within published limits, of the high frequency power gain versus collector to emitter voltage curve. While this report describes the specification of forward gain control characteristics the system can also be used for reverse gain control specifications.","PeriodicalId":136909,"journal":{"name":"Ire Transactions on Broadcast and Television Receivers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133582226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1961-07-01DOI: 10.1109/TBTR2.1961.4503161
H. Kleinman, C. Wheatley
The development of a new type of power transistor has made possible the construction of ultra-high-performance audio-frequency amplifiers which can equal the performance of the finest vacuum-tube amplifiers available. The design, construction, and performance characteristics of such an amplifier, using RCA drift-field power transistors, is discussed. The amplifier is capable of providing a power output of 50 watts at less than one-half per cent distortion from 20 cycles to 20,000 cycles. Also discussed are a five-watt class A amplifier and a 15-watt-per-channel stereo amplifier which combine high performance with economy.
{"title":"An Ultra-Low-Distortion Transistorized Power Amplifier","authors":"H. Kleinman, C. Wheatley","doi":"10.1109/TBTR2.1961.4503161","DOIUrl":"https://doi.org/10.1109/TBTR2.1961.4503161","url":null,"abstract":"The development of a new type of power transistor has made possible the construction of ultra-high-performance audio-frequency amplifiers which can equal the performance of the finest vacuum-tube amplifiers available. The design, construction, and performance characteristics of such an amplifier, using RCA drift-field power transistors, is discussed. The amplifier is capable of providing a power output of 50 watts at less than one-half per cent distortion from 20 cycles to 20,000 cycles. Also discussed are a five-watt class A amplifier and a 15-watt-per-channel stereo amplifier which combine high performance with economy.","PeriodicalId":136909,"journal":{"name":"Ire Transactions on Broadcast and Television Receivers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114440001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1961-07-01DOI: 10.1109/TBTR2.1961.4503158
A. Csicsatka, R. Linz
A flat phase linear IF pass band should be designed into a high fidelity stereo tuner. A vector analysis of a tuner exhibiting an equivalent 5 usec. deemphasis in its output voltage vs. frequency characteristics shows that the major cause of poor stereo performance is related to the level differences of the L + R and L - R channels. A simple adjustment of the L + R level control in the synchronous oscillator stereophonic adapter circuit described can correct this difference.
{"title":"Factors Affecting Overall Performance of FM Stereophonic Receivers","authors":"A. Csicsatka, R. Linz","doi":"10.1109/TBTR2.1961.4503158","DOIUrl":"https://doi.org/10.1109/TBTR2.1961.4503158","url":null,"abstract":"A flat phase linear IF pass band should be designed into a high fidelity stereo tuner. A vector analysis of a tuner exhibiting an equivalent 5 usec. deemphasis in its output voltage vs. frequency characteristics shows that the major cause of poor stereo performance is related to the level differences of the L + R and L - R channels. A simple adjustment of the L + R level control in the synchronous oscillator stereophonic adapter circuit described can correct this difference.","PeriodicalId":136909,"journal":{"name":"Ire Transactions on Broadcast and Television Receivers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121462490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1961-07-01DOI: 10.1109/tbtr2.1961.4503151
S. Lutz
Now that the first demonstrations of satellite-relayed transoceanic television may occur within two years, what is the probable future of satellite broadcasting? This study examines problems of broadcasting via satellites directly to home television receivers, compared with those of relaying to earth-terminals and rebroadcasting locally. The former eventually may be possible, but would require high-power, highly engineered satellites and would involve other problems, which are discussed here. Direct FM audio broadcasting may be less difficult but also less spectacular and rewarding.
{"title":"Satellite Broadcasting","authors":"S. Lutz","doi":"10.1109/tbtr2.1961.4503151","DOIUrl":"https://doi.org/10.1109/tbtr2.1961.4503151","url":null,"abstract":"Now that the first demonstrations of satellite-relayed transoceanic television may occur within two years, what is the probable future of satellite broadcasting? This study examines problems of broadcasting via satellites directly to home television receivers, compared with those of relaying to earth-terminals and rebroadcasting locally. The former eventually may be possible, but would require high-power, highly engineered satellites and would involve other problems, which are discussed here. Direct FM audio broadcasting may be less difficult but also less spectacular and rewarding.","PeriodicalId":136909,"journal":{"name":"Ire Transactions on Broadcast and Television Receivers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1961-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129011398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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