Metodes un soļi mērīšanai kondensatori ar a multimetrs
A multimeter consists of three main parts: the meter head, the measurement circuit and the changeover switch. Multimeter is the most basic tool in the field of electronic testing and a widely used testing instrument. Multimeter is also known as multi-meter, triple meter (A, V, Ω that is, current, voltage, resistance, three), multiplex meter, multimeter, multimeter is divided into pointer multimeter and digital multimeter, there is also an oscilloscope with oscilloscope function of the oscilloscope multimeter is a multi-functional, multi-range measurement instrument. General multimeter can measure DC current, DC voltage, AC voltage, resistance and audio level, etc. Some can also measure AC current, capacitance, inductance, temperature and semiconductor (diode, transistor) of some parameters. Digital multimeter has become mainstream, has replaced the analog meter. Compared with analog meters, digital meters have high sensitivity, high accuracy, clear display, strong overload capacity, portable, and easier and simpler to use.
Kondensators, parasti atsauces uz as tā spēja turēt turēt a uzlādi as kapacitāti, ar the burts C to indicēt. Definīcija 1: Kondensators, as the name suggests, is 'a container for electricity', a device that hold an electric charge. English name: capacitor. kondensators is one of the electronic components used in a large number of electronic devices, widely used in circuit isolation through the cross, coupling, bypass, bypass, filtering, tuning circuit, energy conversion, control, etc., Definīcija 2: Kondensators, jebkuri divi vadītāji (ieskaitot vadus) kas ir izolēti no katram otram un ir tuvu kopā veido a kondensators.
Mērījums no lielāks ietilpība kondensatori (5000P vai vairāk), the multimetrs rādītājs būs ātri šūpoles pa labi un tad pakāpeniski atgriešanās uz kreisais gals, the pointer stops norādīšana uz pretestība vērtība of the izolācija pretestība of šis kondensators. Izolācija pretestība the lielāks labāks, parasti vajadzētu būt tuvu to ∞ if the pointer does not move, the kondensators ir atvienots, after swing does not return, the the kondensators noplūde is nopietns, var ne būt lietots. Mazāka ietilpība (5000P vai mazāk) kondensators tests adata pamatā dara nav kustas.
Elektrolītiskais kondensators is a polarizētā kapacitāte tests jābūt savienots ar sarkanais pildspalva elektrolītiskais kondensators negatīvs, melns pildspalva savienots ar pozitīvais pols, the lielāks kapacitāte, lielāks adata šūpoles, katrs mērījums jābūt saīsināts līdz abiem galiem of kondensators būs būs uzlādēts ieslēgts kondensators uzlāde uzlāde izslēgts.
Tests kristāls diode
Mēra the forward resistance of the diode. The less the resistance value, the better.
Mēra diode reversā pretestība. Lielāks the pretestība vērtība, the better.
Testēšana Kristāls Triode
Measure the tranzistors penetrācija strāva. NPN-type tube as show (PNP-type pen opposite) ce inter-pole resistance should be very large, the larger the value of this resistance, the lessor the tranzistors iespiešanās strāva, the better the stability of the work, if the hand holding the tube, the resistance value samazinās pakāpeniski, the stability of the tranzistors is very poor.
Mērījums of triode amplification in the previous measurement based on the triode cb between the poles plus a 100K rezistors, the adata vajadzētu šūpoties to right the larger the angle of swing, the greater the triode amplification. (If there is no resistance, you can also use your left hand to pinch the bc poles at the same time to replace the human body resistance.
