quek
Newbie level 1
Need help designing a DC-DC converter circuit based on IC UC3524.
SPECIFICATIONS:
•Power supply to the circuit = 10V DC.
•The output of the circuit should be PWM (Pulse width modulated) waveform.
•The chopper frequency = 3.20KHz
•The duty cycle should be manually variable from 0 to 100%.
•There circuit should have emergent stop function.
•Use 3 LEDs to indicate the operation state:
-green : power on
-red : load motor in operation
-yellow : in emergent stop
DESIGN CONSIDERATIONS:
•The circuit should be designed using UC3524 to obtain the specified frequency and variable duty cycle.
•A MOSFET is used as a swtich.
•After successful testing on resistive load, the circuit is then used to drive a DC motor and realize variable speed control.
•As the output voltage is of the PWM form, a D flip-flop is used to keep the RED LED at constant brightness.
E-mail: percusion_freaks@hotmail.com / quekzuoxiang@yahoo.com.sg
PLS HELP! thank you!
Im willing to pay a sufficient amount of money for a workable circuit.
Desperately in need of help.
SPECIFICATIONS:
•Power supply to the circuit = 10V DC.
•The output of the circuit should be PWM (Pulse width modulated) waveform.
•The chopper frequency = 3.20KHz
•The duty cycle should be manually variable from 0 to 100%.
•There circuit should have emergent stop function.
•Use 3 LEDs to indicate the operation state:
-green : power on
-red : load motor in operation
-yellow : in emergent stop
DESIGN CONSIDERATIONS:
•The circuit should be designed using UC3524 to obtain the specified frequency and variable duty cycle.
•A MOSFET is used as a swtich.
•After successful testing on resistive load, the circuit is then used to drive a DC motor and realize variable speed control.
•As the output voltage is of the PWM form, a D flip-flop is used to keep the RED LED at constant brightness.
E-mail: percusion_freaks@hotmail.com / quekzuoxiang@yahoo.com.sg
PLS HELP! thank you!
Im willing to pay a sufficient amount of money for a workable circuit.
Desperately in need of help.
