Includes the top 50 most frequently accessed documents for this publication according to the usage statistics for the month of

• ### A High Sensitivity Ultrasonic Microphone

Publication Year: 1959, Page(s):64 - 69
Cited by:  Papers (1)
| | PDF (2090 KB)

The use of ultrasonic signal transmission for remote control of television receivers has acquired great practical utility. In such a system the microphone is an important component since it determines the required gain and, to some extent, the maximum attainable sensitivity. View full abstract»

• ### The Traveling-Wave VHF Television Transmitting Antenna

Publication Year: 1957, Page(s):49 - 58
Cited by:  Papers (1)
| | PDF (6463 KB)

A new simple and rugged television antenna has been developed for vhf high channels. The antenna utilizes pairs of slot radiators cut longitudinally in a vertical pipe. In each pair the slots are fed in opposite phase, and the pairs are displaced one-quarter wavelength from each other along the pole. Every other pair is in one vertical plane and the remaining pairs in another perpendicular to this... View full abstract»

• ### Characterization of RF Transistors For AM/FM Radio Applications

Publication Year: 1962, Page(s):56 - 62
Cited by:  Papers (1)
| | PDF (2773 KB)

First Page of the Article
View full abstract»

• ### Audio Applications of a Sheet-Beam Deflection Tube

Publication Year: 1959, Page(s):3 - 7
| | PDF (1017 KB)

A number of unusual audio circuits has been developed which make use of a sheet-beam tube, type 6AR8. The 6AR8 tube is a miniature doubleplate sheet-beam tube which incorporates a pair of balanced deflectors to direct the electron beam to either of the two plates and a control grid to vary the intensity of the beam. View full abstract»

• ### A Stereo Tone Arm for Tracking at 2 grams on a Record Changer

Publication Year: 1962, Page(s):79 - 81
| | PDF (1473 KB)

It has long been recognized that very low tracking forces in phonograph pickups will minimize wear of the record and styli. Another advantage of low tracking force is the reduction in wavelength loss. Two factors tend to place a limit on the minimum tracking force which can be used. One is the mechanical impedance of the pickup and the other is the stability of the pickup-tone arm system when subj... View full abstract»

• ### Stereophonic Frequency Test Record for Automatic Pickup Testing

Publication Year: 1962, Page(s):70 - 73
| | PDF (900 KB)

Since phonograph pickup characteristics are usually related to a specific test record, the recent entry into this field of the CBS STR-100 stereophonic test record is a matter of fundamental importance. The salient feature of this record is the frequency sweep bands which will yield continuous response data that can be automatically plotted by a level recorder. View full abstract»

• ### Television Wireless Remote Control

Publication Year: 1959, Page(s):76 - 80
| | PDF (954 KB)

First Page of the Article
View full abstract»

• ### Circuit Aspects of Parametric Amplifiers

Publication Year: 1959, Page(s):75 - 82
Cited by:  Papers (28)
| | PDF (936 KB)

Parametric amplifiers are distinguished from most active networks in that power is taken directly from an a-c source and that the phase of this source is significant in the amplification process. As a consequence of the harmonic spectrum produced by the interaction of the power source (pump) and the nonlinear element, the introduction of a small signal generates a pair of sidebands about each harm... View full abstract»

• ### Transistor Feedback Preamplifiers

Publication Year: 1957, Page(s):35 - 39
| | PDF (770 KB)

First Page of the Article
View full abstract»

• ### A New Age Circuit

Publication Year: 1959, Page(s):5 - 9
Cited by:  Papers (1)
| | PDF (757 KB)

First Page of the Article
View full abstract»

• ### Automatic gain control of transistor amplifiers

Publication Year: 1955, Page(s):1 - 15
| | PDF (1450 KB)

Due to the dependence of transistor small signal parameters on the dc operating point, the gain of a transistor amplifier is function of the emitter current Ie and of the collector voltage Vc. An analysis of the variation of the series-parallel transistor parameters hij with the operating point shows that the gain decreases with decreasing Ie or decreasing Vc in the region of small values of Ie an... View full abstract»

• ### Design of an AM/FM Transistorized Receiver

Publication Year: 1960, Page(s):72 - 78
| | PDF (1118 KB)

When designing an integrated AM/FM receiver, two major problems that have to be considered are: 1. The transistors employed have to perform efficiently at both AM and FM frequencies. 2. The performance of the transistor should not be appreciably affected, when switching from AM to FM operation. Until recently the application of transistors in radio receivers had to be restricted to medium and low ... View full abstract»

• ### The Video Processing Circuits of an all Transistor Television Receiver

Publication Year: 1960, Page(s):25 - 32
Cited by:  Papers (2)
| | PDF (1381 KB)

This paper describes the circuits which process the detected video signal and extract from it the various sub-signals required by the receiver. The transistor requirements for these circuits are discussed and recommended transistors and circuits are shown. Performance data and design considerations are included to enable the circuit designer to choose the particular features which are applicable f... View full abstract»

• ### The Practical Aspects of the Color Subcarrier Synchronization Problem

Publication Year: 1955, Page(s):44 - 51
| | PDF (953 KB)

In NTSC color television, a burst of reference carrier is transmitted at the end of each horizontal scanning line. The fundamental frequency component of this burst is being used in the color receiver to recover the chroma information of the transmitted signal in two synchronous detectors. The color subcarrier synchronization problem then consists of regenerating at the receiver the fundamental fr... View full abstract»

• ### A New Self-Oscillating Frequency Converter

Publication Year: 1955, Page(s):29 - 35
| | PDF (957 KB)

First Page of the Article
View full abstract»

Publication Year: 1962, Page(s):50 - 59
Cited by:  Papers (1)
| | PDF (1497 KB)

The design of a broadcast receiver requires consideration of the type of antenna to be used such that the best performance of the system is maintained. In the past, the use of a built-in air loop antenna was common in the design of home receivers and some portables. However, the effectiveness of this type of antenna decreases with its decrease in dimensions. Today, with the widespread use of trans... View full abstract»

• ### A One Tube Crystal Filter Reference Generator for Color TV Receivers

Publication Year: 1957, Page(s):2 - 7
Cited by:  Papers (1)  |  Patents (3)
| | PDF (1258 KB)

First Page of the Article
View full abstract»

• ### Detection of Asymmetric Sideband Signals in the Presence of Noise

Publication Year: 1959, Page(s):46 - 75
Cited by:  Patents (7)
| | PDF (3821 KB)

The first part of this paper analyzes three methods of detection of signals contaminated by fluctuation noise: (1) Linear Envelope Detectors (2) Product Detectors (3) Exalted Carrier Detectors. A new ratio, the video-to-noise-error ratio'' is proposed for a more adequate quantitative evaluation of detector performance. Its use is justified by a large number of theoretical curves and experimental... View full abstract»

• ### Minimizing the Effect of Cutoff in TV Vertical Oscillators

Publication Year: 1958, Page(s):52 - 62
Cited by:  Papers (1)
| | PDF (1941 KB)

The vertical oscillator of a TV set, whether a multivibrator or a blocking oscillator, can be very dependent upon the cutoff characteristic of the tube. It can affect the speed or frequency of the oscillator, the linearity and the synchronizing characteristic. There are several classes of cutoff current of the tube, namely that which is controlled by the grid voltage and that which is uncontrolled... View full abstract»