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Lab power supply 0-100 V / 0-100 mA
Hanzl, Ondřej ; Pazdera, Ivo (referee) ; Martiš, Jan (advisor)
The thesis deals with the design of a laboratory source of atypical parameters of the voltage range 0 – 100 V and current 0 – 100 mA, which will be used for testing LEDs, measuring the reverse voltage and characteristics of Zener diodes of unknown data. The power supply will operate in linear mode, where the output part make up a power unipolar transistor controlled by a controlled bipolar transistor. The control section controlling this output stage is a closed control loop with two PI controllers, a differential amplifier and a controlled limiter. In the control circuit, the controllers are arranged in a cascade structure, where the voltage regulator is superior to the current one. Power supply is provided by 2 transformers, one for the power part and the other for the control part. All designed and assembled components will be then placed in a box equipped with a digital measuring device with display.
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Precision laboratory power supply
Bartoš, Dalibor ; Šteffan, Pavel (referee) ; Levek, Vladimír (advisor)
The subject of this thesis is a design of a precision dual channel laboratory power supply with output voltage range from 0 to 30 V and adjustable current limit up to 1 A. The proposed solution is based on linear regulators and input voltage switching system to minimize power dissipation. Galvanically isolated channels of the power supply share the same microcontroller that processes the user inputs. Microcontroller code allows the calibration of the device or it’s communication with computer. The cover of the device is designed with good cooling performance and 3D printing manufacturing method in mind. The properties of the designed laboratory power supply are verified by the final test measurements.
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Lab power supply 0-100 V / 0-100 mA
Hanzl, Ondřej ; Pazdera, Ivo (referee) ; Martiš, Jan (advisor)
The thesis deals with the design of a laboratory source of atypical parameters of the voltage range 0 – 100 V and current 0 – 100 mA, which will be used for testing LEDs, measuring the reverse voltage and characteristics of Zener diodes of unknown data. The power supply will operate in linear mode, where the output part make up a power unipolar transistor controlled by a controlled bipolar transistor. The control section controlling this output stage is a closed control loop with two PI controllers, a differential amplifier and a controlled limiter. In the control circuit, the controllers are arranged in a cascade structure, where the voltage regulator is superior to the current one. Power supply is provided by 2 transformers, one for the power part and the other for the control part. All designed and assembled components will be then placed in a box equipped with a digital measuring device with display.
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|
|
Precision laboratory power supply
Bartoš, Dalibor ; Šteffan, Pavel (referee) ; Levek, Vladimír (advisor)
The subject of this thesis is a design of a precision dual channel laboratory power supply with output voltage range from 0 to 30 V and adjustable current limit up to 1 A. The proposed solution is based on linear regulators and input voltage switching system to minimize power dissipation. Galvanically isolated channels of the power supply share the same microcontroller that processes the user inputs. Microcontroller code allows the calibration of the device or it’s communication with computer. The cover of the device is designed with good cooling performance and 3D printing manufacturing method in mind. The properties of the designed laboratory power supply are verified by the final test measurements.
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