Take your electronics development to the next level with this LM358 Adjustable Square Wave Generator, widely regarded as an NE555 upgrade solution. Compared to the traditional NE555 oscillator, this module offers higher stability, wider adjustment range, and better output drive—perfect for engineers, students, and DIY makers.

Why This Is an NE555 Upgrade:

• Greater Stability: LM358 op-amp–based oscillation provides lower distortion and more stable frequency than the classic NE555 timer.
• Dual Adjustment Control: Independent multi-turn potentiometers (W103 for frequency, W504 for duty cycle) allow precise PWM tuning.
• High Drive Output: Features a built-in 9012 transistor, enabling up to 500mA output current—enough to directly drive relays, LEDs, or mini DC motors.
• Wide Voltage Input: Accepts 5V–12V, making it ideal for Arduino, Raspberry Pi, and laboratory power supplies.

Key Specifications

• Main Chip: LM358 (Op-Amp multivibrator, NE555 alternative)
• Voltage: 5V – 12V DC
• Output Amplitude: Follows input voltage
• Frequency Range: 0.07Hz – 2kHz (wide adjustable)
• Duty Cycle: 0% – 100%
• Output Current: ~500mA (with transistor drive)
• Dimensions: 31mm x 11mm x 23mm

Perfect For:

• Replacing NE555-based oscillators
• PWM dimming / speed control
• Stepper motor driver pulse testing
• Arduino/MCU pulse signal injection
• Laboratory waveform experiments