Description
Brand NEW. Package listing: 5867a *1pcs The electronic tube TB3/750 - （ 5867A ） is a direct heating thorium tungsten carbide cathode and glass triode. The anode cooling method is natural cooling, with a maximum anode dissipation power of 350W, a maximum operating frequency of 50MHz, and an output power of 1.2KW. This tube can be used for power amplification or oscillation in industrial heating equipment. 电参数 Electrical parameters 灯丝电压 Filament voltage……………………………………5V 灯丝电流 Filament current……………………………………14.5A 最大瞬时灯丝电流 Maximum instantaneous filament current………………………21A 放大系数 Amplification factor……………………………………25 跨导（ Ia=2A) Transconductance………………………………5mA/V 极间电容 Interpolar capacitance 阳极 — 栅极 Anode Grid……………………………6.2pF 阴极 — 栅极 Cathode Grid……………………………7.5pF 阳极 — 阴极 Anode Grid……………………………0.5pF 机械性能 Mechanical performance 质量 Weight ………………………………………About 0.23Kg 安装方式 Installation method ……………… 垂直 , 阳极引出端向上 Vertical, with the anode outlet facing upward 冷却方式 Cooling method…………………………………… 自然冷却 Natural cooling 最小风量 Minimum air volume ……………………………………25m³/min 管壳最高温度 Maximum temperature of the shell………………………………225 ℃ 阳极封接处最高温度 Highest temperature at the anode sealing………………………220 ℃ 芯柱封接处最高温度 Highest temperature at the sealing point of the core column………180 ℃ 极限运用值 Extreme operating value 最大阳极直流电压 Maximum anode DC voltage………………… 4KV 最大栅极直流负偏压 Maximum gate DC negative bias………………………—500V 最大阳极直流电流 Maximum anode DC current…………………………400mA 最大阳极耗散功率 Maximum anode dissipation power…………………………350W 最大栅极耗散功率 Maximum gate dissipation power…………………………30W 典型工作状态 : 丙类电报 Typical working state: Class C telegraphy 灯丝电压 Filament voltage……………………………………5V 阳极直流电压 Anode DC voltage………………………………4KV 栅极直流电压 Gate DC voltage………………………………-350V 阳极直流电流 Anode DC current………………………………380mA 栅极直流电流 Gate DC current………………………………80mA 阳极输出功率 Anode output power………………………………1.2KW Note: Natural cooling can generally be used when working under matching loads, but the equipment must have good ventilation inside. If forced air cooling is required when working under nonmatching loads, high positive pressure, and high frequency conditions, air should be supplied from the bottom to the top of the electronic tube through a socket.
