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300B/C+ DOME型

300B/C+ DOME型

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  • 商品货号:tu753
    商品库存: 300
  • 商品品牌:Full Music 全真
    商品重量:2.000千克
  • 上架时间:2010-12-30
    商品点击数:623
  • 本店售价:¥1660.00元
    用户评价: comment rank 5
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详细参数请点击查看PDF文件:TJ FullMusic 300B/C+.pdf  (4.13 M)

Classification-Dome-type or Aubergine-type bulb of glass, a white ceramic base with four-prong bayonet gold pins , oxide coated filamentary, carbon plate triode.
Application-Audio frequency amplifier where power outputs of approximately 22.5watts or less is required at relatively low plate voltages.
Dimensions-Dimensions, outline diagrams of the tube and bases, and the arrangement of electrode connections to the base terminals are shown in Figures 1, 2 .

Nominal operating conditions and parameters

Filament voltage................................................5 V
Nominal filament current.................................2.4A
Plate voltage......................................................400V
Grid voltage....................................................-70 V
Plate current......................................................120 mA
Amplification factor...........................................3.85
Grid to plate transconductance .....................8.5mA/V
Grid current........................................................0.05 μA
Plate resistance...............................................450 ohm
Load resistance...............................................2.0 k

*Alternating-current filament supply or Direct-current filament supply.
**Alternating-current filament supply is used. The grid and plate returns should be connected to a center tap on the secondary of the filament transformer.
***Direct-current filament supply is used. The grid and platter returns are connected to the negative end of the filament.

Characteristics-Average characteristics

Figure 3 . shown typical curves of plate currents of grid voltage for several values of plate voltages. It is alternating-current filament supply.

Fig.3

Limiting Operation Conditions for Safe Nor-nor simultaneous ratings

Maximum plate voltage.........................450 V
Maximum plate dissipation..................80 W

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