Hi Jeez,
Nice to see you on ETO.
Which part of India are you from? If you put it next to 'Location' on your user page it will display in the box next to your posts. Knowing where you are helps us to give better answers.
Your age is stated as 15 not 37 on your user page.
Hi Spec ,
Have updated my profile , its not allowing to update DOB ..have contacted the admin
Good luck with your objective of getting into electronics, but your programming experience will be invaluable too. There is a forum on ETO for microcontrollers/microprocessors.
Once i get my basic skills , i will surely get into Microprocessor and controller , this were my favourite subjects along with VHDL and VLSI .
Like you, I lost touch with electronic circuits for a long time, but have done a few circuits now since joining ETO.
Great to have like minded people ..Thumbs Up !!
You ask if the chase circuit will work from a single 1.5V primary cell: The short answer is, no.
(1) LM555 supply rails are, 4.5V to 16V.
https://www.ti.com/lit/ds/symlink/lm555.pdf
(2) CD4017 supply rails are, 3V to 18V.
https://www.ti.com/lit/ds/symlink/cd4017b.pdf
The CMOS version of the LM555, the LMC555 will operate from 1.5V to 15V though. **broken link removed**
But even though theses integrated circuits are specified for low supply rails, their performance degrade below around 5V, and the LM555 is not really happy below 9V supply rails.
If you absolutely need to operate your circuit from a single 1.5V battery, your best bet, is to use a boost (step up) switching voltage regulator. You can either make your own boost converter from a transformer (wind yourself) and a few other components or buy a converter off-the-shelf (cheap on ebay). Building your own boost converter would be an interesting exercise though.
After reading this article , **broken link removed** it makes lot of sense to me, i will go for 1 single AAA battery [boost convertor (step-up from 1.5 v to 9 v) + chaser circuit].
Unless if someone convience me alternate solution .
I haven't looked at the other aspects of your circuit yet.
Now i am in jinx bcoz of this below article
i found an more cheaper easier way to achive the same module using this schematic-
**broken link removed**
I feel this schematic is more chaper and compact and effective compared to my earlier 4016 chaser circuit . your comments are highly appreciated
spec