LM358 Square Wave Signal Generator Module (NE555 Upgrade PWM)

Sun Cheong Computer Company Limited Verified independent store

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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 NE55 5 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 Show more