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  Topic: ADC linearity
naseerak

Replies: 6
Views: 561

PostForum: Various   Posted: Thu Jun 06, 2013 8:41 pm   Subject: ADC linearity
adding opamp will betray the accuracy actually this is an milliohm meter
  Topic: ADC linearity
naseerak

Replies: 6
Views: 561

PostForum: Various   Posted: Thu Jun 06, 2013 7:42 pm   Subject: ADC linearity
Hello all
I want to make a milli voltmeter to measure the voltage across a shunt, I think I will use vref of 1 volt by divider resistors(1%) but have some concerns about the linearity of ADC module i ...
  Topic: Adc and pwm
naseerak

Replies: 10
Views: 673

PostForum: BASCOM-AVR Archive   Posted: Mon May 27, 2013 4:24 pm   Subject: Adc and pwm
Peace to all
what if I want inverted pwm to drive P-channel mosfet for a buck converter to be used in a MPPT controller.
  Topic: Adc and pwm
naseerak

Replies: 10
Views: 673

PostForum: BASCOM-AVR Archive   Posted: Sun May 26, 2013 7:35 pm   Subject: Adc and pwm
And it means I have to work with 8 bit pwm If I wish the frequency to be this much high?
  Topic: Adc and pwm
naseerak

Replies: 10
Views: 673

PostForum: BASCOM-AVR Archive   Posted: Sun May 26, 2013 7:32 pm   Subject: Adc and pwm
Hi
This is why I call it this forum a great place with every member willing to help.
Thanks particularly to Visovian and Kimmi.
Cheers
naseerAk
  Topic: Adc and pwm
naseerak

Replies: 10
Views: 673

PostForum: BASCOM-AVR Archive   Posted: Sat May 25, 2013 7:30 pm   Subject: Adc and pwm
Sorry it is like this
Config Timer1 = Pwm , Pwm = 10 , Compare A Pwm = Clear Down , Compare B Pwm = Clear Down , Prescale = 1

but still the same result
  Topic: Adc and pwm
naseerak

Replies: 10
Views: 673

PostForum: BASCOM-AVR Archive   Posted: Sat May 25, 2013 6:19 pm   Subject: Adc and pwm
Hi to all Forum members
As I said I want to generate the frequency of 31.25 Khz and have write the following code, I have not used the ADC yet as I want to fixup the PWm thing first, but I am getting ...
  Topic: Adc and pwm
naseerak

Replies: 10
Views: 673

PostForum: BASCOM-AVR Archive   Posted: Fri May 24, 2013 7:24 pm   Subject: Adc and pwm
Hi to all
I am trying to generate a frequency of 31.5 kHz for a buck converter, I will also use ADC (10 bit) to change the pulse width from minimum to maxim. I am comfortable with the other part of t ...
  Topic: ADC and TRIAC code
naseerak

Replies: 0
Views: 320

PostForum: BASCOM-AVR Archive   Posted: Thu Dec 20, 2012 8:52 pm   Subject: ADC and TRIAC code
Hi
I am using AN125 code here but not getting any pulses on PB.2 as mentioned in the application note what could be the problem.
CODE:
'*************************************************
'********* ...
  Topic: Sine wave Variable amplitude
naseerak

Replies: 21
Views: 1354

PostForum: BASCOM-AVR Archive   Posted: Sat Aug 04, 2012 8:27 pm   Subject: Sine wave Variable amplitude
@glena
I amended your code for the ATmega8 but has compilation errors you would like to see.
  Topic: Sine wave Variable amplitude
naseerak

Replies: 21
Views: 1354

PostForum: BASCOM-AVR Archive   Posted: Sat Aug 04, 2012 7:44 pm   Subject: Sine wave Variable amplitude
Peace and harmony for all
Well I will be using this project as (1) for a variac which i intended to use for setting the relay on/off voltage threshold point in an automatic voltage regulator (2) and ...
  Topic: Sine wave Variable amplitude
naseerak

Replies: 21
Views: 1354

PostForum: BASCOM-AVR Archive   Posted: Fri Aug 03, 2012 8:09 pm   Subject: Sine wave Variable amplitude
Thanks Glena for the concern
you have presented a quite different method of doing the things. my primary question is to use input from a pot to change the amplitude instead of using key and i am conc ...
  Topic: Sine wave Variable amplitude
naseerak

Replies: 21
Views: 1354

PostForum: BASCOM-AVR Archive   Posted: Thu Aug 02, 2012 7:21 pm   Subject: Sine wave Variable amplitude
Hi
Thanks for the Time but I am getting the same results on the output though the pwm pulses are stretching wide and narrow. below my new code as suggested by you.
regards

' Program : PWM Sine Wa ...
  Topic: Sine wave Variable amplitude
naseerak

Replies: 21
Views: 1354

PostForum: BASCOM-AVR Archive   Posted: Wed Aug 01, 2012 9:52 pm   Subject: Sine wave Variable amplitude
Hi
Now I have done like this bot with no promising results and getting only ecg like waveform on the output of the filter.
' Program : PWM Sine Wave 50Hz inverter.bas
' Date : 05-06-12
' Processor ...
  Topic: Sine wave Variable amplitude
naseerak

Replies: 21
Views: 1354

PostForum: BASCOM-AVR Archive   Posted: Tue Jul 31, 2012 6:19 pm   Subject: Sine wave Variable amplitude
Thanks jenalcom
I will try this and will come back with the results
Cheers
regards
 
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