Two single-ended courage to make the salary enthusiasts ----- Vacuum Tube amplifier

Two single-ended courses suitable for worker enthusiasts, Vacuum Tube Amplifier Keywords: two single-ended courses suitable for worker enthusiasts Introduce two single-ended aspirations that are suitable for worker enthusiasts The author is amateur radio enthusiast, especially for the sound. More than ten years ago, it began to assemble the platiring, assembled the asharging of tubes using 6P14, 6P3.807, EL34, Fu-50, 845, 2A3, using homemade aluminum casing, floral wood board, manufactured chassis also Look, especially the listening, feeling that the professional machine is not divided. The following circuit has been analyzed in many books, and it will not be one more here. 1. Use Fu-7 (Ou Bun Model 807) amplifier The price is inexpensive, there is a quite quantity on the market, with its single-ended amplifier, high frequency delicate, low frequency effort, elastic, and vocal performance is quite transparent. This circuit is only pushed with one 6N9P bile duct, which is connected to SRPP circuitry, and the final power amplification pipe is used for FU-7, and its circuit is very simple, as shown in Figure 1. 2.845 single-ended amplifier It is in today's burning. The 845 tube of the bile king is a low internal blocking straight power triode. The maximum feature of the tube is that the internal resistance is low, the screen is excellent, the screen consumption is large, and its production single-ended amplifier is enough Appreciate any type of music. The total feeling of this machine is very good, the intensity of its amplifier, the transparency of the tone, the sound area, the wide range of zona, especially when the universal scene is quite good (the circuit is shown in Figure 2). Amateur enthusiasts make this machine to pay attention to a few questions: 1) 845 The filament is preferably DC power supply, rectifying the silicon bridge above 30A, facing the casing, easy to heat dissipation. 2) High-pressure rectification should be reasonably used in ceramic brackets, high pressure to avoid fire, leakage. I am assembled, listening for more than a year, quite satisfied, is very satisfactory, the quantity is maximized, the ear is about 15cm away from the speaker, and any communication sound is heard. If the sub-bile duct 848 is used to use the Fu-50 tube (see Figure 3), the voltage is 410V, and there is a considerable manifestation. If the push tube is used to switch 6P3P, it is better to listen to the EL34, and its high frequency is more delicate, and the sound field is also broad. The FU-50 courage is assembled in this figure, regardless of the low frequency, the sound field is open, and the power supply circuit is shown in Figure 4 than the other bile duct assembly.

Our other product:

Professional lightning protection system for Tower	Professional FM Radio Station Equipment Package	FMUSER FU-1000C 1000W FM Transmitter With USB Audio Input Interface
FMUSER 200W FM Radio Broadcasting Package	Hotel IPTV Solution	FMUSER FSN-1000T V5.0 1KW FM Radio Broadcast Transmitter