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Electric fish machine电鱼机

Field effect tube use note: for safety use field effect tube, in the design of circuit cannot be more than pipe dissipation power, maximum drain-source voltage and gate voltage and parameters such as maximum current limit value. Each type of field effect tube when use, should be in strict accordance with the requirements of bias circuit, the people to abide by the polarity of the field effect tube bias. Such as junction field effect tube grid p-n junction, is the source of leakage between N channel tube grid cannot add positive bias; P-channel tube grid can't plus negative bias, and so on.


场效应管的使用注意事项
MOS field effect tube due to the high input impedance, so lead to foot must be short circuit in the transport, storage, to be packed in metal mask, in order to prevent foreign induction electric potential grid breakdown. Pay particular attention to, can't put people the MOS field effect tube plastic box, best in metal 场效应管的使用注意事项-4

In order to prevent the field effect tube grid induced breakdown for all test instruments, workbench, the soldering iron, line itself must have a good grounding; Pin before welding, welding source; Before connected to circuit, tube all the pins must be kept short to meet each other, after the welding to remove the sub materials; Removed tube of the components on the shelf, in an appropriate manner to ensure human body grounding for ring, etc.; Of course, if we can adopt advanced type gas heat soldering iron, welding field effect tube is more convenient, and ensure safety; When did not shut off the power supply, absolutely can't insert tube circuit or pull out from the circuit. The above safety measures when using field effect tube must pay attention to.


场效应管的使用注意事项-2

When you install field-effect tube, pay attention to the installation location close to the heating element to avoid as far as possible; In order to prevent the pipe vibration, it is necessary to tighten up the tube shell; When bending pin wire, shall be greater than the root size to 5 mm, in order to prevent the bent pin broken and air leakage, etc. In type power field effect tube, want to have good cooling conditions. Because type power field effect tube used in high load conditions, must design enough radiator, to ensure that the shell temperature shall not exceed the rating, the devices work stably and reliably for a long time.


Anyhow, ensuring the security of the field effect tube use, should pay attention to matters is varied, to take a variety of security measures, the masses of professional and technical personnel, especially the electronic fan, will set off according to own actual situation, adopt practical and feasible way to safely and effectively use field effect tube well.

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