NE555 Pulse Frequency Duty Cycle Adjustable Module Square Wave Signal Generator

The scope of application modules:

• 1. As square wave signal generator which generates a square wave signal for use experimental development.
• 2. used to generate drive a stepper motor drive square wave signal.
• 3. Adjustable pulse generation MCU for use.
• 4. Have an adjustable pulse control-related circuits.

A brief description:

• 1. Size: 3.1CM * 2.2CM
• 1, the main chip: the NE555;
• 2, Input voltage: 5V-15VDC. 5V supply output current is about 15MA; when 12V power supply, output current is about 35MA;
• 3, the input current: ≥100MA
• 4, the output amplitude: 4.2V V-PP to 11.4V V-PP (different depending on the input voltage, the output amplitude will be different).
• 5, the maximum output current: ≥15MA (5V power supply, V- when PP is greater than 50%), ≥35MA (12V power supply, V-PP is greater than 50%)

Advantages:

• The output with LED indication, there is no straightforward output (LED low volume, high LED off, LED blink rate is relatively low);
• The output frequency range of grades available, the output frequency more continuously adjustable; low-profile: 1Hz ~ 50Hz IF file: 50Hz ~ 1kHz high frequency gear: 1KHz ~ 10kHz high-frequency gear: 10kHz ~ 200kHz
• They can fine-tune the output duty cycle, duty cycle and frequency are not adjustable, adjust the duty cycle will change the frequency;
• The output frequency is adjustable;
• cycle T = 0.7 (RA + 2RB) C
• RA, RB is adjustable 0-10K;
• At low frequencies file C = 0.001UF;
• when the IF file C = 0.1UF;
• high frequency profile C = 1UF;
• high frequency gear C = 100UF,
• so the frequency waveform buyers can own calculations.