UC3842 Switching Power Supply For Battery Charger 3-15V 10A
UC3842 Switching Power Supply For Battery Charger 3-15V 10A
Complete Circuit Diagram.png) |
| UC3843, UC3842 SMPS CIRCUIT Adjustable voltage 10Amps |
Hi. In today's video I'll show you a simple battery charger project based on the uc3842 pwm IC. The power supply has an adjustable output voltage from 3-15V and a maximum current of about 10A at 12V. I hope you enjoy.
Youtube Video Tutorial:
How the Power Supply Works
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| uc3842, uc3843 ic pinout |
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Sir, How do we adjust the Current from 0-10A?
ReplyDeleteto adjust the output current, you will need to alter the current feedback resistor R8 connected between the Source terminal of the Mosfet and negative rail. you can use a 1KiloOhm potentiometer in parallel to it and use the middle terminal to provide feedback the uc3843 IC.
DeleteSir, how to modify output volage as 24v
ReplyDeleteto get an output voltage of 24Volts, you will need to increase the number of secondary winding turns from 5turns to about 10turns. You also need to increase the value of the resistor R11 on the feedback network to setup a higher threshold needed to attain 2.5V reference at the TL431 IC for feedback.
DeleteSir, I assembled this circuit except the Transformer.
ReplyDeleteCan you please guide me:
1. Direction of Primary & secondary Winding.
2. Air gap in the transformer.
Thanks in anticipation.