6N2 pushes 6P13P single-ended tube power amplifier circuit diagram

The power supply circuit of this unit adopts 5A full bridge rectification. After the mains voltage is transformed, rectified and filtered by C5, R8 and C6, it is further filtered by VT, R9, C7 and C8 to supply the required working voltage of the 6P13P anode. The DC 210V voltage is filtered by R7, C3, C9, and supplied to the 6P13P screen. The other way is filtered by C9, and R4 is stepped down to supply the required operating voltage of 6N2. It should be noted that due to the large capacity of the filter capacitor, the bleeder resistor (R10) must be set. Otherwise, even if the power is cut off, it may still be shocked to touch the high voltage terminal. The transistor VT in the filter circuit can be selected from NGN high-voltage triode of model 13005 or other types of display tubes (requires withstand voltage above 600V); the addition of VT can effectively improve the signal-to-noise ratio.

Machine installation and commissioning begins with the power circuit. Since the filament current of the 6P13P is large, the wire diameter of the filament winding of the power transformer cannot be too thin.