View 259
Truth About Six-Pack Abs
Top Movie Downloads + 20 Sites
Renewable Energy Solutions
As Seen On Tv
Download Games Traffic
Mp3 Download Support
Internet Tv 3000+Channels-Great Seller
Run A Car On Water.
New Edition - Satellite Tv For Pc.
This 555 timer based PWM controller features almost 0..100% pulse width regulation using R1, while keeping the oscillator frequency relatively stable. The frequency is dependent on values of R1 and C1, values shown will give a frequency range from about 170 to 200 Hz. Any 555 chip will do, CMOS is fine as well. Diodes are not critical, I used 1N4148. Total cost of parts is about $2. As the whole thing is quite trivial, it's very easy to build on prototyping board like I did (as you can see, one of capacitors - C1 is replaced with different value, 0.047 uF to be precise):
Read More Source :
http://www.cpemma.co.uk/pwm.html#nomad
|
