20pcs NE555 Pulse Module LM358 Duty and Frequency Adjustable Square Wave Signal Generator Upgrade Version

Feature:

 

1. Used as a square wave signal generator to generate square wave signals for experimental development.

2. Used to generate a square wave signal that drives the stepper motor driver.

3. Generate adjustable pulses for use by the MCU.

4. Generate adjustable pulses to control the associated circuitry.

 

Description:

 

1. Size: 3.5CM * 4.6CM

1. The main chip: LM358;

2. Input voltage: 5V-12VDC.

3. Input current: ≥100MA;

4. The output amplitude: close to the input voltage;

5. The frequency adjustment range: 0.07HZ-2KHZ (that is, the cycle is about 0.45 milliseconds to 15 seconds)

6. Duty cycle adjustment range: 0% to 100% (high level / period);

7. Output current: plate with 9012 triode, so the driving ability is relatively strong, the output current can be up to 500MA, the output can directly drive small relay or small motor;

Frequency adjustment method:
 

There are 4 shorting caps on the board to choose the frequency:

Insert 0 short-circuit caps, that is, all 4 short-circuit caps are removed, which is high frequency, and the period is adjusted to 0.3 seconds;

Insert a short-circuit cap, the period can be adjusted to about 4 seconds;

Insert 2 short-circuit caps, the period can be adjusted to about 7 seconds;

Insert 3 short-circuit caps, the period can be adjusted to about 10 seconds;

Insert 4 short-circuit caps, the period can be adjusted to about 15 seconds;

Package includes:

20 x NE555 Pulse Module