High Frequency interference signal spectrum analysis

　　Frequency of power of the output signal and the output oscillating tube itself, so its poor stability of the fundamental frequency will be with the cabinet temperature and operating conditions (output power adjustment and the workpiece size, thickness, etc.) fluctuate, though variation only a few tenths of a megahertz, it may be by an individual channel interfering signals transferred to the adjacent channel.

　　Prevent and mitigate the high frequency interference measures:

　　Build factories in good shielding system, with 0.3 galvanized sheet or a small wire mesh shielding purposes around the 50mm iron pipe into the ground 2-3 meters every two meters hit a mesh of the shield with iron pipe connection, so that high-frequency signal is not easy to radiate out from the factory, played overall shielding effect. Racks and enclosures will be good high frequency grounding, strengthening the body shielding, radiation is recommended to reduce body width 50mm × 50mm or more, the length is not less than 2m of angle iron into the ground as grounding, then more than 10mm2 copper wire rack to high frequency and the shell is connected with the grounding. Connection should be as short as possible, do not circle, try to avoid turning, so you can enhance the body part of the high-frequency shielding to reduce interference signals radiated intensity. If the car (room) room at more than one frequency machine, preferably each frequency (or two adjacent) are buried in the machine next to a nearby ground.

　　Adjust the position and direction of frequency:

　　If the housing wall hanging cables, high frequency best to set away from the end of the cable. In addition, ordinary type high frequency tube chassis in two directions at right angles to success is to use galvanized steel galvanized angle iron rack fixed to the shield, the radiation is weak, should be based on these two directions toward the cable or near the TV users. Good grounding cable networks, selecting the best location for the cable near high-frequency amplifier and strand must be grounded in order to strengthen its shield capabilities. Cables hanging in a high-frequency machine housing wall, to choose in the reinforced concrete structures (such as ring beams, cement more and floor) outside the test, not to vote on the brick wall outside, so that the cables exposed to radiation weaker.

　　Adjust the amplifier or cable position:

　　When the amplifier close to the entrance when the cable away from the high-frequency (10m or less), the amplifier can be moved forward, to export the cable near high frequency, because here the television signal level is high, help to increase television signal and intrusive interference level difference, or adjust the trunk cable, so a little far away from the high frequency machine point.

　　Cable connector to ensure reliable:

　　The connection between the amplifier as far as possible through-type connector, connector lines to do ordinary norms, reliability, special attention should be waterproof joints, causing water to avoid joint outer conductor braid mold off, leading to poor shielding string into the interfering signals.

　　Only two meters with high frequency within close range of users, the measures can be taken:

　　1 to ensure or enhance the user signal level of each channel to ensure user entry level is not less than 65dB, as up to 75 ~ 80dB.

　　2 inside without user boxes, home line directly connected to a TV with plug and, if more than one is the TV is using sealed splitter or splitter directly connected to a TV.

　　3 users cables must be laid indoors Qualified or four shielded cable, disable inferior cable less than 10m away from the high-frequency machine user is best to use aluminum cable households.

　　4 Indoor TV as much as possible without plastic injection pressure plug line.

　　5 good plugs, try not to plastic injection pressure plug wire (its internal easy desoldering and easy to find), the use of hand-crafted four shielded cable plugs.

　　6 users fault complaints received, the first for a new plug wire to try, if the problem is resolved, then the user plug cord cut redo, otherwise then check the indoor cables and connectors, and even outdoor cable connector.

　　Working Principle is the dielectric material under the effect of high-frequency electromagnetic hit live positively charged molecules, so that the dielectric material positively charged molecular high-speed movement, the friction generates heat, so welding.

　　A. electrical power output of the local oscillator generated Duty Cycle 27.12MHZ 40.68MHZ, in line with international standards for industrial band, various control devices special electronic circuit, to avoid improper operation, can the fastest time of welding products, improve product Yield;

　　B. sensitive spark protection device, when a spark occurs, it can automatically cut off the high-cycle loop, so that reduces damage parts and objects, when the current is too high, automatically cut off the pressure to ensure oscillation tubes and rectifier;

　　Edit this paragraph structure composed of high-frequency systems (including high-frequency electrical boxes, high frequency gantry frame), automatic sliding desktop workbench systems, dedicated vertical template, high frequency nose guard, 10T hydraulic system components; adopt a set of automatic sliding desktop high frequency welding / cutting device, feeding through both sides of the workpiece material sliding platen automatically placed in the work place for high-frequency welding / cutting process and other processes, and then through the automatic sliding platen to finish processing the products from the high-frequency work bits sent, thus completing a full flow; while the operator by continuing slide beat raw product placement, high frequency, both sides of the automatic sliding Taiwan beat by job efficiently automate welding / cutting operation. The user can freely set the operating time, typically 7.5 seconds a job beat.

　　Edit this paragraph stable performance characteristics Duty Cycle

　　High Frequency strict accordance with international "radio interference committee" (CISPR) requirements, the use of industrial band 27.12/40.68MHZ, and the design cycle stabilizer and frequency magnetic leakage suppressor, minimal interference of external devices.

　　Particularly strong efforts

　　High Frequency machine uses low-loss coaxial resonator, the output waveform good, high quality factor, particularly strong efforts, welding quickly.

　　Oscillating current stop setting

　　Spark suppression

　　High frequency machine has a high sensitivity spark suppression circuit, accurate detection of current imbalance sparks, quickly cut off in an instant spark suppression spark oscillation circuit, making molds, raw materials and products to minimize the damage.

　　Security

　　Cycle machine is equipped with over-voltage, over-current protection device, automatically cut off when abnormal working pressure to protect oscillation tubes and rectifier, while avoiding improper operation caused by the frequency drift.