Circuit A, 150 throbbing red LED's via PWM. With 12 V power supply,connect 5 red LED's in series & with a 1k6 ohm current limiting R. Measure V at top of 5th LED, might be around 8.5V ? Are they bright enough? Adjust R to suit. For 150 LED's with 5 LED's in series will need 30 strings. If V reading of 5 LED's is over 10 V, then cut strings to 4 in series.

On the marquee you did, Do you mean 6 strings in parallel per channel?

Circuit B, 65 blue LED's, marque style, segments of 4 LED's, 3 on, 1 off. A string is 3 LED's & a R in series. 4
outputs from 4022 or 4017, we'll call them stages A,B,C, & D. 60 LED's / 3 = 20 / 4 = 5 strings / stage. Add a short string, 1 LED & R / stage for 4 more LED's = 64 total.
Blue LED might look something like this, I in mA, V = volts:
I____V
1___2.65
3___2.8
5___2.91
15__3.19
With 12 V, connect 3 blue LED's & a 1k5 R in series, measure LED V. Are they bright enough ?
I would use 4 2N2222's connected as emitter followers to drive the LED's

 

Ok on the LED Marquee, please look at the LED array and correct me if im wrong.

 

Re post 322: If you add 10k R's to 2N2222 bases to 4017 you will have a working circuit for Stream # 11,
1 LED on ,3 off like video 100 0056.
Revue Post # 7, Wendy's Index, Ch. 10, Fig. 10.1, I was suggesting emitter followers also known as common collectors ( sorry about that ); you have it shown as common emitters with out base resistors.
Yes, 5 strings in parallel for 60 LED's.

 

Re post 322: If you add 10k R's to 2N2222 bases to 4017 you will have a working circuit for Stream # 11,
1 LED on ,3 off like video 100 0056.
Revue Post # 7, Wendy's Index, Ch. 10, Fig. 10.1, I was suggesting emitter followers also known as common collectors ( sorry about that ); you have it shown as common emitters with out base resistors.
Yes, 5 strings in parallel for 60 LED's.

Hi Jack, please review circuits

 

You have presented two ways of having the same result, both 1 on, 3 off.

 

You have presented two ways of having the same result, both 1 on, 3 off.

I know just wanted to see if you see any errors.

 

No errors if you wanted the inversion of Stream # 15, all off except 1 in 4 on.
For Stream # 15 with drivers, all on except for 1 in 4 off, here is a literal cut & paste but seems to need some more cutting as figure on right is Stream A. Some R values may change when blue LED arrive & measurement are taken.
Figure on right with PNP invertors should be Stream # 15 A.

 

No errors if you wanted the inversion of Stream # 15, all off except 1 in 4 on.
For Stream # 15 with drivers, all on except for 1 in 4 off, here is a literal cut & paste but seems to need some more cutting as figure on right is Stream A. Some R values may change when blue LED arrive & measurement are taken.View attachment 107393

I just added your info to my drawing and would like for you to proof read them. I think I am almost ready to cut some PCB;'s. Which of the two stream #15B's do you prefer? Is one more reliable then the other and is the current output about the same?

 

I would add 4 2N2222's to Stream B, with PNP's there is a slight uncertainty if 4017 high output is high enough to keep PNP's off without adding some more components.

 

I would add 4 2N2222's to Stream B, with PNP's there is a slight uncertainty if 4017 high output is high enough to keep PNP's off without adding some more components.

More proofing. 1st image is NPN which didn't load properly and the 2nd is the PNP / NPN. I am probably missing some resistors that need to be added.

 

PNP/NPN, good thinking but the possible problem of 4017 output not high enough just followed. On PNP , was thinking of adding 20k R, base to +V & a diode, 4017 out- cathode, anode to 3.9k. The extra 6/10 V diode drop might be enough to keepLED's off. I'm on hotel computer , no notes, no pen, left brain in Tucson. Be back soon.

 

PNP/NPN, good thinking but the possible problem of 4017 output not high enough just followed. On PNP , was thinking of adding 20k R, base to +V & a diode, 4017 out- cathode, anode to 3.9k. The extra 6/10 V diode drop might be enough to keepLED's off. I'm on hotel computer , no notes, no pen, left brain in Tucson. Be back soon.

Ok, i'll wait for you to get back.Tucson is tooooo HOT!

 

Is this what you were thinking of?

 

That looks good.
What are your plans for Circuit C, Green. I have some thinking time available, just no scanner.

 

That looks good.
What are your plans for Circuit C, Green. I have some thinking time available, just no scanner.

I built a 10 LED 4017 chaser a while ago and was thinking of making 6 boards to give me a chase of 10 for different parts of an area like a branching effect instead of one long chase but I'm open for suggestions. I had to put the project on hold because of my mother ill at the hospital and unsure if she is going to make it. Been focusing on making possible difficult decisions so I haven't been to clear on board design. I really appreciate your help which has taken a load off of me. Also please send me your address on email and I will send you some items when I finish up this project

 

We wish your Mother a speedy recovery.I will get back to you when I'm back in Tucson.

 

Hi Jack, can you review this circuit before I make a PCB? This is Wendy's original. I am thinking of 140 led's at 4 in series for a total of 35 strings.

 

How is your Mother?
I see no problem with Wendy's PWM.

 

How is your Mother?
I see no problem with Wendy's PWM.

My mothers condition is not great. High sodium and low blood count. Dehydrated & 7 bead sores. No energy to eat. Blood transfusion today. On my way to see her.

I'll be back later. Oh and the LED & resistor count looks ok with the PWM circuit that i attached?

 

Still looks OK. FET is only switching less than 100 mA.