THE DESIGN AND DEVELOPMENT OF A FIVE WATT NUVISTOR TRIODE.
Final development rept. for 24 Jun 63-24 Mar 65,
RADIO CORP OF AMERICA SOMERVILLE N J ELECTRONIC COMPONENTS AND DEVICES
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The report covers the design and development of two nuvistor triodes having a plate dissipation capability of 5-6 watts. The two developmental types are identical in electrical characteristics but differ in envelope and terminal construction. One version, the A15512A, has a coaxial cathode terminal and the other, the A15526, has a leaded base similar to conventional nuvistors. Both types are designed for application on pulsed or cw Class C amplifiers, oscillators, or frequency multipliers at frequencies up to 1.2 Gcs. Power output of a cw amplifier at 1.2 Gcs with a plate input of 10 watts is about 4.4 watts. Under pulsed amplifier operation at 1.0 Gcs, 0.025 duty factor, 5 micro sec. pulse duration, and 4.8 watts average plate input power, the peak output power is about 105 watts. Both types have an amplification factor of 100 and a transconductance of 19,000 micro mhos at a plate voltage of 200 volts, a plate current of 15.5 ma., and a cathode resistance of 68 ohms. It is believed that both types, the A15512A and the A15526, have met the objective specifications of the contract. Author