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Mikroişlemci kontrollü güç kaynağı

Başlık çevirisi mevcut değil.

  1. Tez No: 22066
  2. Yazar: HÜSNÜ ASIL
  3. Danışmanlar: DOÇ. DR. HAKAN KUNTMAN
  4. Tez Türü: Yüksek Lisans
  5. Konular: Elektrik ve Elektronik Mühendisliği, Electrical and Electronics Engineering
  6. Anahtar Kelimeler: Belirtilmemiş.
  7. Yıl: 1992
  8. Dil: Türkçe
  9. Üniversite: İstanbul Teknik Üniversitesi
  10. Enstitü: Fen Bilimleri Enstitüsü
  11. Ana Bilim Dalı: Belirtilmemiş.
  12. Bilim Dalı: Belirtilmemiş.
  13. Sayfa Sayısı: 75

Özet

Özet yok.

Özet (Çeviri)

connected as a darlington is hfelxhfeS. The output of the voltage comparator.connected to the output of the circuit is connected to the negative of the voltage follower. Any difference that can be noticed at the output, can be compensated by the voltage follower. The output current via the shunt, connected to the output, can be read by an Analog to Digital Converter and can be compared with the current limit value. When exceeding the current limiting type, either O voltage is applied to the output, or the current is kept constant reducing the output voltage, according to the cur rent limiting type that was chosen by the user, at the be ginning. The result of all this is an ideal power supply to be use in laboratory viiibecomes activated, than the output voltage value that user wants, is formatted to be passed to DAC passes through an inverting amplifier with a -1/2 gain and put onto a prog rammable amplifier circuit, made up of analog switches and an operational amplifier. DAC0800 and ADC804, are used respectively as digital to analog converter at the A port and analog to digital converter at the B port of 8255 PIO. The first four bits at C port is used for'74C923 keyboard encoder, where as the fifth one is used for ADC and last three bits are used for analog-switches. Dot matrix LCD is connected directly to the data bus. Eprom is located at OOOOH adress and RAM is located at 8000 adress of the memory map of the circuit controlled by microprocessor. DAC, ADC, 743923' and analog switches are located at 40H, 41H and 42H of I-O map respectively. Here, after the choice of the related analog switch a coefficient is determined by the switch. By multiplying this coeficient by the input voltage value, the output voltage value is obtained. The output of the programmable amplifier is connected to the input of inverting amplifier that has a -1 gain. The output of this inverting ampli fier is connected to the input of non-inverting amplifier, that has a 5 gain. The opamp used here, is a high voltage one, with a ± 40 V supply voltage Later, the output of this opamp is connected to the pozitive input of the volt age follower and the same follower's output is connected to a darlington transistor base. Here, BDX53C is used as a darlington transistor. This transistor 's-hf e is approximately 1SOO. BDXS3C is used to drive silisyum power transistor 2N6277. The specs for this transistor are Ic = SO A and Ptot = 2S0. The total current gain of these two transistors. VI iconnected as a darlington is hfelxhfeS. The output of the voltage comparator.connected to the output of the circuit is connected to the negative of the voltage follower. Any difference that can be noticed at the output, can be compensated by the voltage follower. The output current via the shunt, connected to the output, can be read by an Analog to Digital Converter and can be compared with the current limit value. When exceeding the current limiting type, either O voltage is applied to the output, or the current is kept constant reducing the output voltage, according to the cur rent limiting type that was chosen by the user, at the be ginning. The result of all this is an ideal power supply to be use in laboratory viiibecomes activated, than the output voltage value that user wants, is formatted to be passed to DAC passes through an inverting amplifier with a -1/2 gain and put onto a prog rammable amplifier circuit, made up of analog switches and an operational amplifier. DAC0800 and ADC804, are used respectively as digital to analog converter at the A port and analog to digital converter at the B port of 8255 PIO. The first four bits at C port is used for'74C923 keyboard encoder, where as the fifth one is used for ADC and last three bits are used for analog-switches. Dot matrix LCD is connected directly to the data bus. Eprom is located at OOOOH adress and RAM is located at 8000 adress of the memory map of the circuit controlled by microprocessor. DAC, ADC, 743923' and analog switches are located at 40H, 41H and 42H of I-O map respectively. Here, after the choice of the related analog switch a coefficient is determined by the switch. By multiplying this coeficient by the input voltage value, the output voltage value is obtained. The output of the programmable amplifier is connected to the input of inverting amplifier that has a -1 gain. The output of this inverting ampli fier is connected to the input of non-inverting amplifier, that has a 5 gain. The opamp used here, is a high voltage one, with a ± 40 V supply voltage Later, the output of this opamp is connected to the pozitive input of the volt age follower and the same follower's output is connected to a darlington transistor base. Here, BDX53C is used as a darlington transistor. This transistor 's-hf e is approximately 1SOO. BDXS3C is used to drive silisyum power transistor 2N6277. The specs for this transistor are Ic = SO A and Ptot = 2S0. The total current gain of these two transistors. VI iconnected as a darlington is hfelxhfeS. The output of the voltage comparator.connected to the output of the circuit is connected to the negative of the voltage follower. Any difference that can be noticed at the output, can be compensated by the voltage follower. The output current via the shunt, connected to the output, can be read by an Analog to Digital Converter and can be compared with the current limit value. When exceeding the current limiting type, either O voltage is applied to the output, or the current is kept constant reducing the output voltage, according to the cur rent limiting type that was chosen by the user, at the be ginning. The result of all this is an ideal power supply to be use in laboratory viii

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