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Author Topic: Pulse generator  (Read 1169 times)
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itp
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« on: January 10, 2008, 02:25:08 14:25 »

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
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irvinos
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« Reply #1 on: January 22, 2008, 08:59:41 20:59 »

Is it a circuit with PIC or no?
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fangiciel
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« Reply #2 on: January 29, 2008, 04:47:20 16:47 »

try this link
http://www.datasheetcatalog.net/datasheets_pdf/X/R/2/2/XR2206.shtml
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hoda
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« Reply #3 on: February 23, 2008, 10:23:26 22:23 »

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
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F8B
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« Reply #4 on: February 25, 2008, 10:05:38 10:05 »

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.
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jim_17
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« Reply #5 on: February 28, 2008, 10:38:03 22:38 »

You can try to do it with a 555, there are many examples on the net, Wink. But if you want to do more things, I would recommend you to do it with a PIC.
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tuvoj
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« Reply #6 on: March 07, 2008, 08:01:57 08:01 »

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
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donno
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« Reply #7 on: March 09, 2008, 12:51:21 12:51 »

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!
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mhayball
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« Reply #8 on: March 12, 2008, 11:52:41 23:52 »

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.
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dihoc
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« Reply #9 on: March 18, 2008, 08:06:43 08:06 »

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)
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