1. Kev sib xyaw ntawm kev hloov hluav taws xob
Thaum lub teeb liab input ui qis, lub transistor V1 nyob rau hauv lub xeev txiav tawm, tam sim no ntawm lub teeb-emitting diode nyob rau hauv lub optocoupler B1 yog kwv yees li xoom, thiab qhov tsis kam ntawm cov zis terminals Q11 thiab Q12 yog loj, uas yog. sib npaug rau qhov hloov "tawm";Thaum ui yog qib siab, v1 nyob rau, LED hauv B1 yog nyob rau, thiab qhov kev tiv thaiv ntawm Q11 thiab Q12 raug txo, uas yog sib npaug rau qhov hloov "rau".Lub Circuit Court yog nyob rau theem siab conduction xeev vim Ui yog theem qis thiab qhov hloov pauv tsis txuas.Ib yam li ntawd, vim tias tsis muaj teeb liab (Ui yog theem qis), qhov hloov pauv yog nyob rau, yog li nws nyob rau theem qis conduction xeev.
2. Kev sib xyaw ntawm logic Circuit Court
Lub Circuit Court yog ib qho AND rooj vag logic circuit.Nws cov logic qhia yog P = AB Ob lub raj photosensitive nyob rau hauv daim duab yog txuas nrog series.Tsuas yog thaum cov tswv yim logic qib A = 1 thiab B = 1, cov zis P = 1
3. Kev sib xyaw ua ke ntawm kev sib txuas sib txuas
Cov txiaj ntsig linear amplification ntawm lub voj voog tuaj yeem lav tau los ntawm kev xaiv qhov kev txwv tam sim no Rl ntawm lub teeb pom kev zoo thiab ua rau qhov sib kis tam sim no ntawm B4 tas li.
4. Ua kom muaj hluav taws xob hluav taws xob ruaj khov hluav taws xob
Lub raj tsav tsheb yuav tsum siv cov transistors nrog high voltage withstand.Thaum cov zis hluav taws xob nce ntxiv, qhov kev tsis sib haum xeeb ntawm V55 nce, thiab qhov tam sim no ntawm lub teeb emitting diode nyob rau hauv B5 nce, yog li ntawd cov inter-electrode voltage ntawm lub photosensitive raj txo, qhov tsis zoo voltage ntawm lub raj kho yuav junction txo, thiab sab hauv kuj nce, kom cov zis voltage txo, thiab cov zis voltage tseem nyob ruaj khov
5. Tsis siv neeg tswj Circuit Court ntawm lub teeb pom kev zoo
A yog plaub pawg ntawm cov keyboards analog hluav taws xob (S1 ~ S4): S1, S2 thiab S3 txuas nrog rau tib lub sijhawm (uas tuaj yeem ua rau muaj zog tsav tsheb thiab kev cuam tshuam kev cuam tshuam) rau kev ncua Circuit Court.Thaum lawv txuas nrog lub hwj huam mov, ob txoj kev thyristor VT yog tsav los ntawm R4 thiab B6, thiab VT ncaj qha tswj cov teeb pom kev zoo H;S4 thiab sab nraud photosensitive resistor Rl tsim lub teeb pom kev zoo hauv lub teeb.Thaum lub qhov rooj kaw lawm, qhov ib txwm kaw reed KD ntsia ntawm lub qhov rooj ncej yog cuam tshuam los ntawm cov hlau nplaum ntawm lub qhov rooj, thiab nws qhov kev sib cuag yog qhib, S1, S2 thiab S3 yog nyob rau hauv cov ntaub ntawv qhib lub xeev.Thaum yav tsaus ntuj, tus tswv tsev mus tsev thiab qhib qhov rooj.Cov hlau nplaum nyob deb ntawm KD, thiab KD tiv tauj raug kaw.Lub sijhawm no, 9V fais fab mov yuav raug them rau C1 txog R1, thiab qhov hluav taws xob ntawm ob qho kawg ntawm C1 yuav sai sai rau 9V.Qhov hluav taws xob rectifier yuav ua rau LED hauv B6 ci ntsa iab los ntawm S1, S2, S3 thiab R4, yog li ua rau ob txoj kev thyristor tig rau, VT tseem yuav tig rau, thiab H yuav tig rau, paub txog qhov tsis siv neeg lub teeb pom kev zoo.Tom qab lub qhov rooj kaw lawm, cov hlau nplaum tswj KD, kev sib cuag qhib, 9V fais fab mov nres them C1, thiab lub voj voog nkag mus rau lub xeev qeeb.C1 pib tawm R3.Tom qab lub sijhawm ncua sijhawm, qhov hluav taws xob ntawm ob qho kawg ntawm C1 maj mam poob qis hauv qab qhov qhib qhov hluav taws xob ntawm S1, S2 thiab S3 (1.5v), thiab S1, S2 thiab S3 rov pib txiav, ua rau B6 txiav tawm, VT txiav, thiab H extinction, realizing lub ncua lub teeb tawm muaj nuj nqi.
Post lub sij hawm: Feb-02-2023