Robotics Team 20 days learning punch day6 Taiyuan University of Technology (analog circuits preliminary)
Updated from time to time, reference books "Analog Electronics" child poem white version
Connect the text.
Effect of temperature on the transistor characteristics and parameters
Since the heat-sensitive semiconductor material, almost all parameters of the transistor on the temperature.
Effect of temperature on the input characteristics
The diode volt-ampere characteristics and a long time ago learned curve similar.
· When the current constant, the higher the temperature, partial pressure decreases.
· When the partial pressure constant, the higher the temperature, the current increases.
Effect of temperature on the output characteristic
When the temperature rises, since the IC EO, β is increased, and the input characteristics of the left, resulting in the collector current increases.
Phototransistor
And its name, according to the phototransistor current to control the size of the light intensity.
We know that, in a certain voltage range, one-way diode conductive, the transistor is now a photodiode (i.e. light and associated diodes) and is connected to the transistor. ,
And output characteristic curve of the phototransistor ordinary transistor similar, except that the base current IB parametric substituted with incident illumination E. When using a photo transistor, which should pay particular attention to the reverse breakdown voltage, the maximum operating voltage, the collector of the maximum power consumption limit parameter.
FET
FET (FET①) using electric field effect input circuit of a semiconductor device to control current output circuit, and so named.
Because it alone majority carriers in the semiconductor conductivity, also known as unipolar transistors.
First here today (and not short, too much food behind a lot of unintelligible)
