Changsha Shuguang Audio Ltd.

Changsha Shuguang Audio Ltd.

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Products

Shuguang 845C (replacing 845 845B 845M ) new vacuum tube

Shuguang 845C (replacing 845 845B 845M ) new vacuum tube
Product name:Shuguang 845C (replacing 845 845B 845M ) new vacuum tube
Item:SG-845C
Price:$95.15
Details:
About this tube 
     The auction is for one tube.  Shuguang tube 845, 845B,845C and 845M can be exchangable for use .They are closely matched and tested for noise.       
   
      

845C


Straight heating thorium-tungsten cathode tridoes 845C can be used to amplify the power of A1 series and AB1 series. 845C is the same with UV-845, 845 and can be exchanged each other.

 

filament heating
Uf …………………………10 V
If……………………………3.25 A

limit rating
plate voltage……………………1250 V
plate dissipation power………………75 W
maximum message input power………150 W
anticathodemaximumcurrent………………120 mA

capacitance between poles
input capacitance……………………6 PF
output capacitance……………………4.5 PF
transroute capacitance……………………14.5 PF

static state parameter:
Ua………………………1250 V
-Ug………………………200 V
Ia………………………80 mA
Gm ………………………3 mA/V
ri ………………………1.7 kΩ
μ………………………5
RL…………………………3.4 kΩ
üg(pk)……………………69 V
Pout………………………15 W

commend working state(reference value)
single tube A1 amplify
Ua……………………………1000 1000 1250 V
-Ug …………………………145 155 209 V
RL……………………………6 9 16 kΩ
Ia……………………………90 65 52 Ma
üg(pk)………………………- 110 148 V
ri……………………………1.7 1.9 2.1 kΩ
Gm……………………………3.1 - - mA/V
Pout…………………………24 21 24 W
Dtot…………………………5 - - %

 

driving AB1 amplify
Ua……………………………800 1000 1000 1250 V
-Ug……………………………125 170 175 225 V
RL……………………………4.5 4.6 4.6 6.6 kΩ
Ia……………………………80 70 40 40 mA
üg(pk)……………………177 240 - - V
Ia(max.sig)……………170 230 230 240 mA
Pout…………………………40 75 75 115 W

 

 

 

 

 
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