Features: - 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 adjustable pulse for MCU. - Generate adjustable pulse,to control circuitry associated. - Size: 31mm x 22mm Specifications: - Main chip: NE555 - Input Voltage: 5V-15V DC. When power supply is 5V, the output current can be 15 MA around; when 12V power supply, the output current can 35 MA around - Input current: gt;=100 MA - Output amplitude: 4.2V V-PP to 11.4V V-PP. (Different input voltage, the output amplitude will be different) - Maximum output current: gt;=15MA (5V power supply, V-PP greater than 50%), gt;=35MA (12V power supply, V-PP greater than 50%) - Output with LED indication(low level ,LED will on; high level,LED will off;low frequency, the LED flashes) - The output frequency range is selectable: - 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.