UC3844 Motor Speed Controller Circuit
UC3844 is popular current mode PWM controller which is commonly found on DC to DC converter circuits and switch mode power supplies. This pwm motor speed controller is also based on UC3844 and it is specifically design to drive... Electronics Projects, UC3844 Motor Speed Controller Circuit "motor control circuit, motor driver circuit, " Date 2020/04/27
UC3844 is popular current mode PWM controller which is commonly found on DC to DC converter circuits and switch mode power supplies. This pwm motor speed controller is also based on UC3844 and it is specifically design to drive 20VDC 24VDC motors.
In this given DC Motor Speed Controller configuration UC3844 50kHz to 240kHz PWM output and this range can be adjust by changing the value of C2 timing capacitor. As per the datasheet UC3844 is capable to produce PWM output frequency up to 1MHz.
UC3844 oscilloscope waveforms on RT/CT (Pin4) and OUT (Pin6)
This circuit is quiet sensitive to the noises, and to get the accurate output construct this circuit on PCB. As per our observations long wires on oscillator circuit may change the stability of the output signal.
According to the ON semiconductors, UC3844 is now discontinued product but it is still commonly available in the market for less than Rs. 40.00 (LKR). For this circuit either DIP (UC3844N) or SMD (UC3844D1) version of UC3844 can be used but the PCB Eagle CAD design available with this article is based on DIP version of UC3844
UC3844 Motor Speed Controller Circuit Schematic
UC3844 motor speed controller PCB Eagle CAD .brd, sch and pdf files
FILE DOWNLOAD LINK LIST (in TXT format): LINKS-26500b.zip
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