ADIY NE555 Pulse Frequency Module

Description

Pulse Frequency Module- This is a NE555  Pulse Frequency Duty Cycle Adjustable Module Square Wave Signal Generator By Adiy. The output frequency range is selectable. The duty cycle and frequency are not separately adjustable, adjusting the duty cycle will change the frequency. Single channel signal output, the output square wave duty ratio is about fifty percent.

The general use of the module generates pulses from approximately 4Hz to 1.3Khz. Utilizes the popular NE555 timer IC operating as an unstable multi-vibrator. The module has ten-turn frequency adjustment control and power on LED. Use for stepper motor pulses, testers, etc.

The 555 timer IC is an integrated circuit (chip) used in a variety of timer, pulse generation, and oscillator applications. The 555 can be used to provide time delays, as an oscillator, and as a flip-flop element. Derivatives provide up to four timing circuits in one package. Introduced in 1971 by Signetics, the 555 is still in widespread use due to its ease of use, low price, and stability. It is now made by many companies in the original bipolar and also in low-power CMOS types.

This module can be used as a square-wave signal generator.  It generates square wave signals used for experimental development. It also generates square wave signal driving motor drive.  With adjustable pulses generated for use by the MCU and adjustable pulse control related circuits.

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 buyers can calculate the frequency of the waveform. 

Application: 

• As a square wave signal generator generates a square wave signal used for experimental development.
• Used to drive a stepper motor for generating a square wave drive signal.
• Generate an adjustable pulse for MCU.
• Generate an adjustable pulse, to control circuitry associated.

Features : 

1. Generate an adjustable pulse for MCU.
2. Generate an adjustable pulse, to control circuitry associated.
3. The output current can be 15 MA around; when 12V power supply, the output current can 35 MA around
4. Output with LED indication (low level, LED will on; high level, LED will off; low frequency, the LED flashes).
5. Max Output Current: >= ≥15MA (5V power supply, V-PP greater than 50%), >=35MA (12V power supply, V-PP greater than 50%)