Seized information:
The flash filament is the bottom of the tube when the power is on, it will shine, to make the tube more quickly into the state.
The tube is very common in the European tube.

A flash filament appears at the beginning of the use of a semiconductor rectifier.
Semiconductor rectifier to the first filament preheating, after the high pressure
As the cathode in the heating is not enough time to add high pressure to cathode poisoning, affecting the life,
This improved electronic tube has been made on devices that require high stability,
The main function is to make the cathode of an electron tube warm up quickly, protect the cathode, and prevent it from poisoning,
Improve the life and stability of these tubes can be synchronized with the filament and high voltage.
Because it is early tube, also used in medical equipment industry, * *, are we now understand the sound tube
Performance may be better than the general.

Flash lamp is a kind of special manufacturing process. It is common in Europe and America.
(used in aviation, ships, radar, etc.),
Its main purpose is to make the pipe to work quickly,
And then go into the norm. Its working principle is similar to the CRT monitor degaussing resistance.

Authoritative statement, the flash lamp is also called "explosion of fireworks",
The main function is to protect the cathode, to prevent poisoning, so that the tube quickly into the working state,
The general sound tube marker, choice of tube preferably flash filament tube
The flash lamp is a high tube with long life.

Flash lamp filament refers to the moment when electric power is applied light is very bright, the duration of one second or so,
And then slowly down to the normal brightness, so that the filament can quickly heat,
Not that kind of plate ignition flash, flash filament is only a name for it, called fast fast hot filament can be bright filament,
As for the manufacture of the filament of course is special, it is cold when the resistance is low, the thermal resistance is relatively large,
Therefore, the power supply of the cold state is larger, and the heating and lighting are larger, and the resistance value is increased after the heating of the filament,
Current will be reduced to the normal, the brightness is also common as the.

. The flash light part of the "flash lamp" is not the filament itself, but a small piece of spiral "flash" in series between the bottom of the tube and the filament ".
This "flash wire" is made of special metal, which is a kind of cold resistance and high heat resistance. At room temperature, the "flash" resistance is larger than the series resistance of the filament,
So in the boot instant it will shine. With the increase of temperature, the "flash" resistance is reduced to less than the filament resistance,
Of course, the filament is bright and "flash" off the.
To prove this point, as long as the multimeter is used to contrast the same type of "foot filament resistance wire with no flash glance" "flash wire" of the pipe, the former is much larger than the latter.