NE555_PWM_Driver

NE555 precision timer based IRFZ44N LED/motor driver design.

• No feedback loop
• Just open loop control
• No filter
• Bare PWM output

PCB Design (DIP)

Schematic

Front

Back

PCB Design (SMD)

Schematic

Front

Back

PCB Images (SMD)

With Lamp

Front

Back

Oscilloscope Waveforms

General

Whole Swing

Ripple

Noise

Conclusion

• The theoratical frequency is consistent with experimental frequency
• There is small discrepancies between the theoratical ripple and experimental ripple

Simulation on LTSpice

Circuit

Waveforms

Prototype on Breadboard

Watch the video

References

https://circuitdigest.com/electronic-circuits/555-timer-pwm-generator-circuit