JRC_NSD-51_维修维护电器原理图手册_PE1ABR

8122Power TubeLinear Beam Power TubeCoaxial-Electrode StructureCeramic Metal SealsFull Ratings up to 500 MHzForced-Air Cooled380 Watts PEP Output at 30 MHz AB570 Watts PEP Output at 30 MHz AB2300 Watts CW Output at 470 MHzMatched Pair AvailableBURLE-8122 is a very small,low-cost,forced-air-The three grid-No.1 leads to separate pinscooled beam power tube designed for use as an RFaccommodate a split-input circuit for distributedpower amplifier,oscillator,regulator,distributedamplifier service.amplifier,or linear RF power amplifier in mobile orfixed equipment.The BURLE 8122/V1 is the designation for a matchedpair of Type 8122 Beam Power Tubes for use inThe 8122 features a light-weight,cantilever-supportedequipments not having individual bias adjustment.Thiscylindrical electrode structure within a ceramic-metalpair is matched to assure balanced operation within aenvelope.This construction provides a very sturdybias range of 28 to 40 volts,so that each tube will havetube and permits high-temperature operation.an approximately equal anode current during zero-signal and signal operation.Such matching alsoThe terminal arrangement of the 8122 facilitates useassures efficient,full system operation and givesof the tube with tank circuits of the coaxial or striplineoptimum life expectancy.type.Effective isolation of the output circuit from theinput circuit is provided at the higher frequencies byGeneral Datathe low-inductance ring terminal for grid-No.2.A base-Electrical:pin termination for grid-No.2 is also available forHeater,for Unipotential Cathode:operation of the 8122 at the lower frequencies.Voltage(AC or DC)'13.5±.10%voltsCurrent at 13.5 volts1.3AThe tripod arrangement of both the cathode and theMinimum heating time60grid-No.1 leads not only simplifies construction,butMu-Factor.Grid No.2 to Grid No.1enhances electrical characteristics.The three cathodefor Anode Volts =450.Grid-No.2leads reduce the inductance path to RF ground andVolts =325,and Anode Amperes =1.212reduce the input admittance at high frequencies.Direct Interelectrode Capacitances:2Grid No.to anode.…0.15max.pFGrid No.1 to cathode.16.3This data sheet gives application informationAnode to cathode...0.01pFunique to the BURLE 8122.It is to be used inGrid No.1 to grid No 2..........23.3conjunction with the publication,"ApplicationGrid No.2 to anode.7.0Guide for BURLE Power Tubes,TP-105",forGrid No.2 to cathode.2.7Fgeneral application information.Cathode to heater.…3.3BURLE