- Specification <br /> - Size: 31mm * 22mm <br /> - Main chip: NE555 <br /> - Input Voltage (VCC): 5V-15VDC <br /> - Input current:~100MA <br /> - Output amplitude: 4.2V V-PP to 11.4V V-PP. (Varries with VCC voltage) <br /> - Maximum output: 15MA (VCC=5V, V-PP greater than 50%), 35MA (VCC=12V, V-PP greater than 50%) <br /> - Output LED indicator (low level, LED is on, high level, LED is off; LED flashes with frequency <br /> - Output frequency is continuously adjustable using the onboard jumpers and potentiometers <br /> - Jumper setting <br /> - Period T = 0.7 (RA +2 RB) C <br /> - RA, RB are 0-10K Ohm adjustable potentiometers <br /> - 1Hz ~ 50Hz: C = 0.001UF <br /> - 50Hz ~ 1kHz: C = 0.1UF <br /> - 1KHz ~ 10kHz: C = 1UF <br /> - 10kHz ~ 200kHz: C = 100UF <br /> - Applications <br /> - As a square wave signal generator for experimental development <br /> - Used to drive a stepper motor for generating a square wave drive signal <br /> - Generate adjustable pulses for microcontrollers (MCU)