By Topic

Magnetic Deflection of Kinescopes

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
Schlesinger, Kurt ; Columbia Broadcasting System, Inc., New York 22, N.Y.

This paper investigates some basic principles in the operation of systems for magnetic deflection of television tubes. In the first part, the energy of the deflecting field is calculated for various deflection angles and beam voltages. It is found that sweep amplifiers are preferably operated with a positive rate of change of plate current. This causes a considerable plate-voltage drop, for which expressions are given. The efficiency of sweep generators is discussed and a method is indicated to determine the power dissipation in the sweep output amplifier. The second part deals with the transients during the retrace and their elimination. A theory is given for resistance damping. Practical results are presented for a special method of damping by secondary emission within the sweep amplifier. In part three, some basic forms of sweep distortion are discussed and means for their correction are indicated. Two characteristic distortions are found to be due to the resistive components of either the tube or the load. These distortions are of opposite sign. Nonlinearity of the tube characteristic is found equivalent to an emphasis of low-frequency components in the spectrum of a sawtooth wave. The fourth part describes a sweep circuit of improved efficiency. This circuit operates with power feedback and uses a diode as switching element. Flyback energy is rectified and the resulting direct-current power added to the plate power supply.

Published in:

Proceedings of the IRE  (Volume:35 ,  Issue: 8 )