Instrument for demonstrating automatic control circuit comprising commonly-used photoelectric components
A technology of automatic control circuits and photoelectric devices, which is applied to instruments, educational tools, teaching models, etc., can solve the problems that students cannot intuitively understand the functions of automatic control, and there is no demonstration of instrument demonstrations, etc. Effect
Inactive Publication Date: 2015-04-29
XIAN ZAOXIN ELECTRONICS INFORMATION TECH
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Problems solved by technology
[0002] At present, in the teaching of electronic circuits, when teaching common photoelectric devices such as photoresistors, phototransistors, photodiodes, photothyristors, and photocouplers can play an automatic control role in electronic circuits, there is no demonstration instrument demonstration, and students cannot intuitively understand Its automatic control function in electronic circuit
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[0010] exist figure 1 Among them, the 4 pins and 14 pins of the 556 integrated circuit (I) are connected to the positive pole of the DC power supply (E) through the power switch (K), the 7 pins of the 556 integrated circuit (I) are connected to the negative pole of the DC power supply (E), and the 556 integrated circuit (I) pin 8 and pin 12 pass through the second capacitor (C 2 ) is connected to the negative pole of the DC power supply (E), and the 13 pins of the 556 integrated circuit (I) pass through the fifth resistor (R 5 ) and the power switch (K) are connected to the positive pole of the DC power supply (E), and the 13 pins of the 556 integrated circuit (I) pass through the sixth resistor (R 6 ) is connected to 8 pins and 12 pins of 556 integrated circuit (I), and the third resistance (R 3 ), the power switch (K) is connected in series with the DC power supply (E), and the switch (K 2 ) and the first resistor (R 1 ) in series, photothyristor (G 2 ), photodiode (G ...
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The invention relates to an instrument for demonstrating automatic control circuit comprising commonly-used photoelectric components, and belongs to the technical field of electronic control demonstration. The instrument is characterized in that after a photoelectric thyristor, a photoelectric diode, a photoelectric triode and a photoresistor are connected in parallel, one end is connected with the positive electrode of a DC power supply through a power switch, and the other end is connected with a pin 2 and a pin 6 of a 556 integrated circuit through a change-over switch; one end of the input end of a photoelectric coupler is connected with the positive electrode of the DC power supply through the power switch, and the other end of the photoelectric coupler is connected with the negative electrode of the DC power supply through a switch and a first resistor; one end of the output end of the photoelectric coupler is connected with the positive electrode of the DC power supply through the power switch, and the other end of the output end of the photoelectric coupler is connected with the pin 2 and the pin 6 of the 556 integrated circuit through the change-over switch. Due to the adoption of the technical scheme, the instrument has the advantages as follows: through the change of the reading of a voltmeter as well as the working states of a light emitting diode and a loudspeaker, automatic control effects of the photoresistor, the photoelectric triode, the photoelectric diode, the photoelectric thyristor and the photoelectric coupler in an electronic circuit can be demonstrated respectively; the instrument is high in intuition and low in manufacturing cost.
Description
technical field [0001] The invention relates to a common photoelectric device automatic control circuit demonstration instrument, which belongs to the technical field of electronic control demonstration. Background technique [0002] At present, in the teaching of electronic circuits, when teaching common optoelectronic devices such as photoresistors, phototransistors, photodiodes, photothyristors and photocouplers can play an automatic control role in electronic circuits, there is no demonstration instrument demonstration, and students cannot intuitively understand Its automatic control function in electronic circuits. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a common photoelectric device automatic control circuit demonstrator, which can respectively demonstrate photoresistors, photoelectric triodes, photodiodes, photoelectric thyristors and photoelectric The automatic control function played by the coup...
Claims
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Login to View More IPC IPC(8): G09B23/18
CPCG09B23/183
Inventor 不公告发明人
Owner XIAN ZAOXIN ELECTRONICS INFORMATION TECH