First, this module Scope: 1 is used as a square wave signal generator generates a square wave signal for experimental development to use. 2 is used to generate drive stepper motor drives a square wave signal. 3 adjustable pulse generation for MCU to use. 4 generates an adjustable pulse, the control-related circuit. Second, a brief description: 1, Size: 3.1CM * 2.2CM 1, the main chip: NE555; 2, the input voltage: 5V-15VDC. 5V supply, the output current can be about 15MA; when 12V power supply, the output current can be 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 supply, V-PP greater than 50%), ≥35MA (12V power supply, V-PP greater than 50%)
Three Advantages: 1, the output with LED indication, there is no output straightforward (low level LED quantity, high LED off, LED blinks when the frequency is low); 2, grade selectable output frequency range, the output frequency is more continuously adjustable; LF file: 1Hz ~ 50Hz IF file: 50Hz ~ 1kHz High frequency gear: 1KHz ~ 10kHz High frequency profile: 10kHz ~ 200kHz
3, the output duty cycle can be fine-tuning, duty cycle and frequency are not separately adjustable, adjusting the duty cycle will change the frequency; 4, the output frequency is adjustable; Cycle T = 0.7 (RA + 2RB) C
RA, RB for 0-10K adjustable;
At low frequencies stalls C = 0.001UF; IF stalls when C = 0.1UF; High-frequency gear C = 1UF; When high-frequency gear C = 100UF, therefore frequency waveform buyers can own calculations.