Descriptions:

Operating voltage: 5V-15V

Drive current: 1A (open collector output)

Duty cycle adjustment range: 5%-95%

Products wiring:

Positive and negative power supply: VCC GND.

Output signal EN, CLK. DIR: signal output common anode connection

Dir stepper motor direction signal. Signal output when the direction switch to the left

A steppins clock signal Clki .As open collector output.

En allow / offline signal, allows you to select a short circuit when the output voltage. No voltage output is disconnected.

Product set and Adjustment:

As shown, the DIP 3 is set to ON, 4 is set to OFF, this module is set for adstable pulse generatory.

The right of the knob to adjust the pulse duty cycle, when adjusting the duty cycle does not influence the frequency. Duty cycle adjustment approximate range: 5% -95%, the duty cycle is different at different frequencies.

Fourth gear frequency bands to choose from, three capacitors 103,473 and 104, respectively.

DIP 1 and 2 are OFF, the high band frequency range:

F =1.443 / (RA + RB + R) * C0 = 3.4- 6.6KHZ

DIP 1 ON, 2 to OFF when the band:

F = 1.443 / (RA + RB+R) * (C1 + C0) = 600-1200KHZ

DIF 1 OFF, 2 ON when the low frequency band:

F = 1.443 / (RA +RB+ R) * (C2 + C0) = 300-6OOHZ

Dip and 2 are both ON the second low frequency:

F 1.443 / (RA + RB + R) * (C2 + C1 + C0) : 200-400HZ

Note: The frequency of the theoretical value, the actual capacitance and resistance error,frequency error, calculated without considering the impact resistance of two diodes, the measurement results will vary. when the need to replace the lower frequency capacitance canacitv. When capacity is increased by 10 times to 10 times the frequency will be reduced.

When DIP 3 to OFF, the DIP 4 is ON, this module is a delay trigger switch. When the time needed to replace long is larger capacitance.

Package Included:

1PCS*NE555 Pulse Generator Frequency Dutv Cycle Adjust