What is a damped line output transistor?
What is a damped line output transistor?
The line output high power transistor with a damping transistor is a special tube in the output circuit of the television.Figure 6A shows the internal structure and equivalent circuit of the output transistor with damping line.It can be seen from the diagram that there is a built-in resistance between the B.E pole of this transistor and a damping pole tube with a resistance and damping between C.E poles a diode is enclosed in the same tube light together with a high power product body tube.The utility model has the characteristics of high voltage withstand voltage and high power,and the damping diode is not needed to be separately set in use.NPN type silicon tubes are two kinds of plastic package and metal package.
how to detect a special transistor with damping
use the multimeter RX 00 gear,the black watch pen to connect the B.red pen to the E.C pole respectively.The needle Sakura moves about 2/3.
the red watch pen is connected with the B.black pen,then the C.dial should be swung 1/2;the black pen should be connected with the E.pin again Big.
the black pen is connected to E,the red pen is connected to C,the needle should swing about 2/3,and the meter is measured as "infinity".
the red pen is connected to E, the black pen is C,and the RX 10k2 block measurement should be "infinity".If the needle swings,it indicates that the penetration current of this pipe is slightly larger, and should be noted when using.
After the above tests are completed,the magnifying power can be measured again.The method is to pinch the BE pole by hand,use the RX 10k2 block,the red pen is connected to the E pole, the black watch is connected to the C pole,the needle should swing in a large amplitude,indicating that it has magnifying ability,otherwise it will be bad.
what is a banded transistor?
The bandage tube is made up of only two resistors and transistors,and is widely used in electronic products such as TV,video disc machine, video recorder DVD,display and so on. It is used as inverters inverters or electronic switches.