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How to display variable power supply voltage on the SSD or LCD without using any cont

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i made variable PS , i wan to diplay it on the screan without using any controller is it possible?
if so please tel me how
 

You cannot display your voltages directly to the screen/LCD.some interfacing must be included between them.
Why you dont wanna use controller?
 
The best way to display voltage on ur LCD by using microcntroller only. I guess there is no any other alternate way.

Regards
Chanchal Chauhan
 

engr.hayee said:
You cannot display your voltages directly to the screen/LCD.some interfacing must be included between them.
Why you dont wanna use controller?
Click to expand...
y to waste money

is it possible to display on SSD usind ADC? if so tel me which ADC shall i use
 

Yes you can display on SSD.What is your voltage range?
you need an A-D to convert the analog voltage to a digital voltage. Then an IC or two to convert the 8 or 12 bit binary from the A-D to BCD digital (binary coded decimal). then a few seven segment decoders to convert the BCD to signals to drive the display.
You have to check your voltages range and A-D converter voltage handling.

You can find all these parameters in one IC and that is microcontroller.

May I right?
 

engr.hayee said:
Yes you can display on SSD.What is your voltage range?
you need an A-D to convert the analog voltage to a digital voltage. Then an IC or two to convert the 8 or 12 bit binary from the A-D to BCD digital (binary coded decimal). then a few seven segment decoders to convert the BCD to signals to drive the display.
You have to check your voltages range and A-D converter voltage handling.


myy voltage range is 15V.which ADC can i use
Click to expand...
 

Alternatively you can use array of comparators for making a LED bar (by increasing the voltage more LED will be on). There are also some IC (bargraph IC) which support many LEDs - you put the IC, connect the LED and you're ready. Some well known IC are
- LM3914 - **broken link removed**
- AN6884-SIP Catalog
- UAA180 - Catalog

A link to a site for using external comparators - Bargraph Voltage Indicator by LM339 | Circuit Project Electronic
 
There are alot of IC's available in the market,just search on the internet.
one is as follows.
**broken link removed**
In the above site you may also find readymade IC's which will read the adc and convert voltages for seven segment display.
check out the specifications i didn't check that
May this would be helpful for you.
 
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    ajit4u

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BTW, in Conrad Electronic they sell some ADC measuring modules 0-5V (including LCD) for just 3 EUR (Sonderprise) !!! Why not to use such ready module, it's cheaper than IC + Display bought separately and also no PCB manufacturing.
 

luben111 said:
BTW, in Conrad Electronic they sell some ADC measuring modules 0-5V (including LCD) for just 3 EUR (Sonderprise) !!! Why not to use such ready module, it's cheaper than IC + Display bought separately and also no PCB manufacturing.
Click to expand...
thanks
but i m 4m India
 

You can use a chip that has a/d converter plus the display driver, like the ones used in multimeters, they can be used with led or lcd display.

ICL7106 3+1/2 Digit LCD Driver with A/D
ICL7107 3+1/2 Digit LED Driver with A/D
**broken link removed**

Alex
 

IC7106 or IC7107 is the shortest option.OR you can use TC7135 from microchip.
 
you can use the IC which is an A/D converter as well as BCD converter for SSD, the IC is: ICL-7135
 

hi guys i m working on a project on solar panel. i m having some problem in displaying the power in the lcd. i m using 8051 controller. so can anybody provide me how to write the coding as the power will be varied..... thanks in advance!!!!
 

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