Projection engineering (Jan 1932-Mar 1933)

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ARCTURU ANNOUNCES a line of TRANSMITTING TUBES, POWER AMPLIFIERS and MERCURY VAPOR RECTIFIERS Arcturus has built into these new products the same superior qualities of construction and performance which have established Arcturus as the name for dependability and quality in the receiving tube field. The two tubes of the series now ready for distribution are Mercury Vapor Rectifier No. E-766 and the heavy duty type Mercury Vapor Rectifier No. E-772. IMPORTANT POINTS OF SUPERIORITY 1. Rugged construction. 3. Special oxide coated filament — emission is distributed evenly over entire length of filament. 3. Uniform output voltage variation over wide range of current drain. 4. Constant output for hundreds of hours on intermittent life tests. Write for details of the new Arcturus Mercury Vapor Rectifier Tubes Nos. E-766 and E-772. Arcturus Radio Tube Company, Newark, New Jersey. *E-766 (Upper) Filament Voltage 2}/t Volts Filament Current ..... 5 Amperes Maximum Peak Inverse Voltage 7500 Volts Maximum Peak Plate Current 0. 6 Amperes Approximate Tube Voltage Drop 12 Volts * Interchangeable with *66 types **E-772 (Lower) Filament Voltage 5 Volts Filament Current .... 10 Amperes Maximum Peak Inverse Voltage 7500 Volts Maximum Peak Plate Current 2y% Amperes Approximate Tube Voltage Drop 10 Volts **lnterchangeable ujith '72 types ARCTURUS Quality Tubes for Transmitting, Receiving and Industrial Uses s