Rainer Dangschat

Experience in Europe with Selenium High Voltage Triplers for Color TV Sets

For more than a year now many leading European manufacturers have been using the particularly economic voltage tripler circuit in their production receivers instead of the more conventional circuit with high voltage rectifier and shunt regulator tubes. The tripler circuit is described in detail. Also covered are the various aspects governing the design of an associated flyback transformer and high voltage tripler unit. The advantages and disadvantages of selenium/ silicon rectifiers and ceramic/metallized Mylar r capacitors are discussed. The problems involved in selecting suitable encapsulating material are dealt with. Specific characteristics of the deflection circuit with high voltage multiplication are explained. Other possibilities of voltage multiplication employing the doubler or quadrupler are briefly described. Finally details are provided of experience so far accrued in the laboratory, production lines and in the field.