Design of a 5 A Constant Current Source
Pandey, Amit (2021)
2021
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-202105128552
https://urn.fi/URN:NBN:fi:amk-202105128552
Tiivistelmä
This work presents the development of three different current source circuits providing constant 5 A output. The purpose of this project is to provide enough thermal power to cut surgical sutures of lifeline thread.
This paper gives a theoretical framework of a power source and different topologies to develop the constant current source. Websites, books, journals, magazines, etc. were used as sources. PADS Logic and PADS layout were used to design the circuit. Circuit simulation was done in multisim. Tests were conducted mainly using a multimeter.
PWM was used to control the main circuit’s output. The output of 5 A current was quite enough to cut the sutures in less than 4 seconds. At the end, the circuit was enclosed inside the PCB enclosure before delivering. Short circuit protection, development of both cable and tip, high current for a shorter time and development of circuit using switching regulator are the goal of the future development.
This paper gives a theoretical framework of a power source and different topologies to develop the constant current source. Websites, books, journals, magazines, etc. were used as sources. PADS Logic and PADS layout were used to design the circuit. Circuit simulation was done in multisim. Tests were conducted mainly using a multimeter.
PWM was used to control the main circuit’s output. The output of 5 A current was quite enough to cut the sutures in less than 4 seconds. At the end, the circuit was enclosed inside the PCB enclosure before delivering. Short circuit protection, development of both cable and tip, high current for a shorter time and development of circuit using switching regulator are the goal of the future development.