Site menu
Section categories
Simple DC motor PWM speed control
[1]
Circuit Explaination: The 555 Ic is wired as an astable and the frequency is constant and independent of the duty cycle, as the total resistance (R charge + R discharge, notice the diode) is constant and equal to 22Kohm (givin a frequency of about 1Khz, notice the hum). When the potentiomenter is all up, the Rcharge resistance is 1,0 Kohm (the diode prevents the capacitor to charge through the second potentiometer section and the other 1,0 Kohm resistor) , and Rdischarge is 21 Kohm, giving a 5% on duty cycle and a 1Khz frequency. When the potentiomenter is all down, the Rcharge resistance is 21,0 Kohm (the diode prevents the capacitor to charge through the second potentiometer section and the other 1,0 Kohm resistor) , and Rdischarge is 1 Kohm, giving a 95% on duty cycle and a 1Khz frequency. When the potentiomenter is at 50% , the Rcharge resistance is 11,0 Kohm (the diode prevents the capacitor to charge through the second potentiometer section and the other 1,0 Kohm resistor) , a...
|
Search
Tag Cloud
Our poll
Tag Board
Site friends
Statistics
Total online: 1
Guests: 1
Users: 0
Main » Files » Projects » Simple DC motor PWM speed control |
Dc motor PWM speed control
[ Download from this server (22.9 Kb) · Download from mirror (22.9 KB) ] | 2013-08-30, 12:11 PM |
Thz is the Project whch is on sale Go hee for register thz project http://altercollection.ucoz.com/gb | |
Views: 415 | Downloads: 205 | Rating: 0.0/0 |
Total comments: 0 | |