Changsha Shuguang Audio Ltd.

Changsha Shuguang Audio Ltd.

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Products

Shuguang 807 new Hi-Fi tubes

Shuguang 807 new Hi-Fi tubes Shuguang 807 new Hi-Fi tubes
Product name:Shuguang 807 new Hi-Fi tubes
Item:SG- 807
Price:$19.99
Details:

 

about this tube 
     The auction is for one tube and they can be closely  matched.They are brand new tubes with excellent quality.

 

807(FU-7)


Beam power tube 807's anticathode limit dissipation power is 25W. In sending equipment, it is output grade. In audio frequency amplifier, it amplifies A1,AB1 and AB2.
807 is the same with UY-807, and can be exchanged each other.


heater heating
UH …………………………6.3 V
IH…………………………0.9 A

limit rating
plate voltage……………………600 V
second grid voltage………………300 V
plate dissipation power………………25 W
second grid dissipation power…………3.5 W
maximum cathode current………………120 mA
heater voltage between cathodes……………±135 V
working frequency……………………60 MC
first grid resistance
when it is fixup partial voltage………………0.1 MΩ
when it is self-partial voltage………………0.1 MΩ

capacitance between poles
input capacitance……………………12 PF
output capacitance……………………7 PF
transroute capacitance……………………0.2 PF

static state parameter
Ua…………………………300 V
Ug2…………………………250 V
-Ug1…………………………12.5 V
Ia……………………………83 mA
Ig2…………………………8 mA
ri……………………………24 kΩ
Gm…………………………6.5 mA/V
Pout………………………6.5 W
Dtot………………………6 %

commend working state(reference value)
single tube A1 amplify(fixuppartial voltage)
Ua(b)……………………300 500 V
Ug2……………………250 200 V
-Ug1……………………12.5 14.5 V
Ia……………………………83 50 mA
Ig2…………………………8 1.6 mA
ri……………………………24 39 kΩ
Gm…………………………6.5 5.7 mA/V
RL…………………………3 6 kΩ
Pout………………………6.4 11.5 W
Dtot………………………6 12 %

 

 

single tube A1 amplify(auto-partial voltage)
Ua(b)……………………300 500 V
Ug2……………………250 200 V
Rk……………………140 280 Ω
Ia……………………………83 50 mA
Ig2…………………………8 1.6 mA
ri……………………………24 39 kΩ
Gm…………………………6.5 5.7 mA/V
RL…………………………3 6 kΩ
Pout………………………6.4 11.5 W
Dtot………………………6 12 %

 

 

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