NE555 Pulse Module LM358

Size: 31mm x 11mm x 23mm/1.21„ x 0.43“ x 0.89„ (inch) (approx) 　 Application scope:

  1. Used as a square wave signal generator produces a square wave signal for the experimental development use.
  2. A square wave signal is used to produce a stepper motor-driven drive.
  3. Produce the adjustable pulse for MCU use.
  4. Generates the adjustable pulse to control the associated circuits.

　 Descriptions:

  1. The main chip: LM358.
  2. Input voltage: 5V-12VDC.
  3. The input current: ≥ 100MA.
  4. The output amplitude: close to the input voltage.
  5. The frequency adjustment range: 0.07HZ-2KHZ (also cycle in about 0.45ms to 15s).
  6. Duty cycle adjustment range: 0% to 100% (High / cycle).
  7. Output Current: strip 9012 transistor drive capability is strong, about 500MA output current, the output can directly drive small relays or small motors.

Detailed map Frequency adjustment methods:

  1. The board has four the shorting cap can select the frequency.
  2. Inserted 0 short-circuit cap, the longest cycle upwards to 0.3 s.
  3. Inserted one short-circuit cap, the longest cycle can be adjusted to about 4s.
  4. Inserted two short-circuit cap, the longest cycle can be adjusted to about 7s.
  5. Inserted three short-circuit cap, the longest cycle can be adjusted to about 10s.
  6. Inserted four short-circuit cap, the longest cycle can be adjusted to about 15s.
  7. Duty cycle adjustment range: 0% to 100% (High / cycle).
  8. Output Current: strip 9012 transistor drive capability is strong, about 500MA output current, the output can directly drive small relays or small motors.

Circuit Diagram