NE555 Adjust PWM signal output module
First, dimensions: length 45mmX 25mm wide 24mmX high
Second, the main chip : NE555
Third, the working voltage : DC 4 ~ 16V
Fourth, the working current : less than 10 mA
Fifth, the maximum output current : 225 mA
Sixth, the output frequency is 10Khz ( change in capacitance can change the frequency of seven , the duty cycle of the output is adjustable from 0 to 100% .
[ Knowledge ]
PWM pulse width modulation is the abbreviation of the square wave proportional cycle time with high duty cycle is called , for example, one second high -low 1 second wave PWM duty cycle is 50%
Pulse Width Modulation (PWM) Definitions
Pulse Width Modulation (PWM) switching power supply is in the terminology. It is classified according to the regulator 's control , in addition to PWM type , as well as the PFM and PWM, PFM mixed. Pulse width modulated (PWM) switching regulator circuit in the case of a constant output frequency control circuit , the voltage feedback to adjust its duty cycle , so as to achieve the purpose of stabilizing the output voltage .
Pulse Width Modulation (PWM) extended meaning of life
Pulse width modulation (PWM) using the digital output of the microprocessor to control the analog circuits of a very effective technique , widely used in measurement , and communication to the power conversion control in many areas .
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