There are 3 230 volts in the power supply of the gall machine, I don t know where to connect?

The main cost of the gall machine is the output transformer and the power transformer, a few hundred yuan of the gall machine can also be made, the problem is that the power is very small, generally a few W of output power, this is because the efficiency of the gall machine is very low, you can count the single-ended gall machine power consumption of 250W, the output is about 8W*2,. And when it comes to this brand's gall machine, I have seen it again, in fact, it is the gall pre-level collocation set successfully put the post-stage, which is theoretically called the combination of gallstones, not a pure gall machine. Because the post-stage uses integrated circuit power amplifier, the cost is very low, and there is no need to output cattle, and the power efficiency is relatively high, so a relatively small power transformer is used.

But the sound is quite different from that of a pure gall machine. In addition, I have disassembled some low-cost gall machines, which are actually pure stone machines, and the few tubes inserted on them are actually just connected to the filament and used for decoration.

It is easy to tell whether it is a real gall machine, if it is claimed to be a pure gall machine, see if there is an output transformer, and the volume is relatively large. If not, the transistor or set is successfully released. As mentioned earlier, the gall machine that only connects the filament can still work normally when the tube is removed, so there is no way to talk about the gall machine.

Tube power amplifiers are fascinated by many enthusiasts because of their charming timbre, and different bile ducts will have different sound performance. However, some friends believe that the failure rate of the tube power amplifier is high, and it is troublesome to use and maintain. In fact, many problems are caused by the lack of understanding of the working principle of the tube amplifier at the beginning of the burning.

For a few typical problems, a brief explanation, I hope it can be helpful for the first fever.

1.How to choose a tube power amplifier for initial burning.

In fact, if you understand his basic working principle, such as the advantages and disadvantages of single-ended Class A amplifier circuits and push-pull Class A and B amplifier circuits, timbre direction, and style characteristics. Believe that you have a general goal and direction in mind, but there is one thing: the law is correct in the vast majority of cases.

There is no so-called "high-performance ** ratio" equipment, it is all relative. It is the result of horizontal comparison, you can't go to vertical comparison, the pursuit of so-called cost-effective equipment. In general, in terms of domestic gall machines.

If there are three secondary high-voltage transformers with equal voltages, test them with the following methods first, and use two groups with larger currents. Find an incandescent bulb with as little wattage as possible (the light in the refrigerator will do), and then weld the bulb to the secondary high-voltage end of the transformer, after power-on, test the voltage to see what the voltage drop is, compare the three groups, choose two groups with a lower voltage drop, as the full-wave rectification secondary high voltage, and the other group is idle. If the pressure drop is not obvious, you can increase the wattage of the bulb and test again.

If there is a three-way 230V, I don't know where to connect, then you look at the manual, it will generally have a circuit prompt, and then the circuit diagram will follow his sniping.

In this case, it depends on the specific situation, generally there is a zero line, a fire line and a bottom line, so.

Because if there is no wiring, it is because there is no built-in one, and you can go and buy one by yourself.

You put this voltage at 220 volts, depending on which way you need to connect it?

In this case, the easiest way is to pick it up according to his specific situation, there is no problem at all, and it can achieve a very good use effect.