As shown in the below diagram, the direct coupled amplifier (DC) is consist of two transistors Q1 and Q2 , a voltage divider base bias resistor network (R1, R2) which is provided on the transistor Q1 base two collector resistors Rc1and Rc2,
The self generated transducers don’t use the external power supply source. However they provide an electrical output when stimulated by some physical form of energy. The self generated transducers are sub divided into many groups.
The PUT stand for Programmable Uni Junction Transistor, it is actually a type of Thyristors and not like the UJT at all. The only similarity to a UJT is that the PUT can be used in the same oscillator to replace the UJT.
The main property of the DC voltage regulator is, if there is any change in the I/P voltage, the O/P of the voltage regulator will be constant. And further we can adjust the O/P voltage according to our requirements
The CT Scanner is the abbreviation of computer tomography scanner. The invention of CT Scanner in 1970 was made possible by a previously established insight and development of the dedicated minicomputers.
In electronics timers the output of the timing element is used as a trigger pulse for BJT, FET and UJT, the active devices element signal is amplified and this way this signal is used for the load control switch.
It is a device which converts the light energy into electrical energy. When light is allowed to fall on this cell, the cell generates a voltage across its terminals. This voltage increase whit increase in the light intensity.
When the diode is forward bias, electrons cross the PN junction from N-type material and recombine with holes in P-type material free electrons are in the conduction band and at a higher energy level then the holes in the valence band.