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274A/n DOME/茄型 网屏

274A/n DOME/茄型 网屏

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  • 商品货号:tu761
    商品库存: 300
  • 商品品牌:Full Music 全真
    商品重量:250克
  • 上架时间:2010-12-30
    商品点击数:667
  • 本店售价:¥650.00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 274A/n.pdf  (10.41 M)

Classification- Dome-type or Aubergine-type bulb of glass, a white ceramic base with four-prong bayonet golden pins, oxide coated filamentary, Solid plate or mesh plate twin diode.

Application -It is designed to supply direct current up to 112 miliamperes from an alternating current soure.

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 and 3.

Nominal operating conditions and parameters
Filament voltage* ………………………………………………………… 5.0V
Nominal filament current ………………………………………………    2A

Choke-Input filter
RiM-S Alternating voltage prelate ………………………………………   550V
Tolal rectified current ………………………………………………………112mA

Condenser-Input Filter
RiM-S Alternating voltage prelate …………………………………………450V
Tolal rectified current ……………………………………………………… 98mA

*Alternating-current filament supply or Direct-current filament supply.

Characteristics-Average characteristics
The current-voltage characteristic of a single diode untie of the 274A /B tube is shown in Figure 4. Direct-voltage output characteristics are given in Figures 5 and 6. The characteristics of figure 5 are for a choke-input filter such as is shown in circuit A and those of Figure 7 are for a condenser-input filter such as is shown in circuit B.

Limiting Operation Conditions for Safe Nor simultaneous ratings

Choke-input filter:
1 Max. R-M-S alternating Voltage per plate ………………………… 550 V
1 Max Total Rectified Current …………………………………………140 mA
2 Max. R-M-S Alternating Voltage per plate ………………………… 660V
2 Max. Total Rectified Current …………………………………………120mA

Condenser-input Filter:
1 Max.R-M-S Alternating Voltage per plate ………………………… 450V
1 Max. Total Rectified Current ………………………………………   105mA

*4uF.Maximum filter input capacitance

 

 

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