Fullmusic Premium 274B/Q 274BQ Rectifier Vacuum Tube Replace 5U4G GZ34 274B Tubes For Vintage Hifi Audio DIY (one pairs)

Introduction:
The Q series is an upgraded version of the CNE Tianwang series. The response of the CNE Tianwang series has been detached. As an upgraded version of the Q series, it will naturally strive for excellence and satisfy your higher sense of listening.

Q series product features:
1. Currently available varieties are 2A3 / Q, 300B / Q, 274B / Q, 845 / Q
2. The anode base material is selected from 0.2-0.3mm (the inherent resonance frequency is slightly higher) special metal material to ensure the characteristics of beautiful and full sound in the middle and high frequency bands, taking into account the sound demand of the high, medium and low frequency bands.
3. The alternating sound source signal of the grid will not induce excess electrical signals inside the anode, which reduces the noise physically.
4. The special coating on the anode surface can continue to increase the vacuum degree in the tube during use, reducing the chance of collision between electrons and residual gas, and achieving the purpose of reducing noise again.
5. The increase of vacuum in the tube can also prolong the service life of the tube.
6. The special coating on the anode surface can increase the anode heat radiation ability and enhance the anode's resistance to overcurrent.





Features: It is a dome-shaped or eggplant-shaped glass bulb, four-legged bakelite gold-plated seat, solid, mesh plate electrode, direct thermal oxide cathode double diode.
Uses: used for full-wave rectification power supply, rectified current up to 112mA.

Standard working status and parameters:
Filament voltage * ……………………………………………………………… 5.0V
Filament current …………………………………………………………………… 2.0A

L-C filter
R-M-S AC plate voltage ....................................... 550V
Total rectified current .................................................................. 112mA
C-L-C filter
R-M-S AC plate voltage …………………………………… 450V
Total rectified current .................................................................. 98mA
* AC or DC power supply.

Limit working value:
LC input filter
1. The maximum AC voltage of each anode of R-M-S …………………… 550V
Maximum rectified current …………………………………… 140mA
2. The maximum AC voltage of each anode of R-M-S …………………… 660V
Maximum rectified current .............................. 120mA
C-L-C input filter
R-M-S Maximum AC voltage of each anode ... 450V
Maximum rectified current ...................................................... 105mA
Note: The input capacitor of the filter should be less than 4μF.