NE555 Pulse Generator Frequency Duty Cycle PWM Square TImer Module

e scope of this module :
- Is used as a square wave signal generator generates a square wave signal used for experimental development.
- To drive a stepper motor for generating a square wave drive signal.
- Adjustable pulse generated for use by MCU
- Adjustable pulse generation, control circuitry associated.

Description :
- Size : 31mm * 22mm
- The main chip : NE555;
- Input voltage : 5V-15VDC. 5V power supply, the output current can 15MA around; 12V power supply, the output current can 35MA around;
- The input current : 100MA
- The output amplitude : 4.2V Vpp to 11.4V Vpp. (Different depending on the input voltage, the output amplitude will be different)
- The maximum output current: 15MA (5V power supply, Vpp greater than 50%), 35MA (12V power supply, Vpp greater than 50%)

Advantages:
- The output with LED indication, there is no output straightforward (low LED volume, high LED off frequency is relatively low, the LED flashes);
- The output level selectable frequency range, the output frequency is more continuously adjustable;
LF file: 1Hz ~ 50Hz
IF file: 50Hz ~ 1kHz
High-frequency file: 1KHz ~ 10kHz
HF file: 10kHz ~ 200kHz
- The output duty cycle can fine-tune, duty cycle and frequency is not separately adjustable, adjusting the duty cycle will change the frequency
- The output frequency is adjustable
Period T = 0.7 (RA +2 RB) C
RA, RB is 0-10K adjustable
Low profile when C = 0.001UF
IF stalls C = 0.1UF
High-frequency file C = 1UF
HF stalls C = 100UF, so the frequency of the waveform buyers can own calculations.