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Led lights using Analog Flip-Flop circuit diagram

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TriTech

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Hi! I wanted to build led lights using Analog Flip-Flop circuit as shown image below.

But in my case i'd like to build it using 30 to 40 leds. Now i'd like to ask if its possible

with parallel connection? If not, anyone draw a circuit diagram for me please.. (sorry, newbie in electronics) tia..

**broken link removed**

**broken link removed**
 
That is a Digital Astable Flip Flop; I've never heard of an Analog Flip Flop.

Are you asking how to put 15 LEDs in each side of the flop in place of the single one depicted above?
 
MikeMl said:
That is a Digital Astable Flip Flop; I've never heard of an Analog Flip Flop.

Are you asking how to put 15 LEDs in each side of the flop in place of the single one depicted above?
Click to expand...

Hehe! sorry for that sir..Yes, how to put 15 LEDs in each side? Thanks in advance...
 
How high are you willing to make the battery voltage? 18V (2-9V in series), 27V (3)?
 
MikeMl said:
How high are you willing to make the battery voltage? 18V (2-9V in series), 27V (3)?
Click to expand...

Hi thanks for the quick reply..

Actually, I'm a complete newbie in electronics.

Any Battery voltage sir (18V (2-9V in series), 27V (3) or any design (schematic) as long as it works on 40 LEDs..
 
This will drive a total of 42 LEDs. It is based on the assumption that the forward voltage of your LEDs is ~2.2V, and that they will be bright enough with a forward current of ~21mA. If yours are a lot different, I will have to modify the design. The 2n3904 is a general purpose NPN audio/switching transistor which should be similar to the one shown in the schematic you posted.
 

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