Pulse generator

[itp]

Hi,

 Can any body suggest a circuit of  a Pulse generator with following spec.

Frequency: .1Hz to 100kHz
Duty cycle:  10% to 90%
Amplitude: 5V

Regards
Itp

[fangiciel]

try this link
http://www.datasheetcatalog.net/datasheets_pdf/X/R/2/2/XR2206.shtml

[hoda]

you can use the built in PWM controller in PIC16F microcontroller to produce the required duty cycle with frequency control or you can try the ICL8038 chip

[F8B]

See Frequency Generator 2.6 at http://www.softpile.com/Education/Mathematics/Review_21743_index.html

Frequency Generator contains 3 Generators, you can choose between
Sine, Square, Triangle, SawtoothNeg, SawtoothPos, Pink Noise
Total Recall, save all setting into a Project file.
Trigger Mode is certainly for the Oscilloscope.
Trigger Level +50;-50 Mode Up Flang and Down Flank.
Frequency from 0,01 Hz up to 22050 Hz.

[jim_17]

You can try to do it with a 555, there are many examples on the net, . But if you want to do more things, I would recommend you to do it with a PIC.

[tuvoj]

Also can be done with an LS123 TTL with selectors for R/C network as needed...take a look at a TTL spec book for sample circuits under the 74(ALS)123

Cheers-Tuvo

[donno]

Cheapest option probably the Pic12F675, tie output to darlington transistor or n channel fet
code set to your required output or throw in a pot for variable output.

More option available with pic!

[mhayball]

What sort of waveform are you wanting?  Do you need sawtooth, square, sine, or all of them?  This will determine if it is easier to use a PIC or go to a dedicated IC.

[dihoc]

check ad9852 data sheet . This IC can have output up to 100mhz then feed back into input comparators for pulse out put. 1 output is AC, other is DC level (both are programmable)