I would like the LEDs in series with the switches to be able to be off when the LED on the relay contacts is powered.

The circuit in post #11 doesn't address the issue stated in post #9.

Think I got caught up in the diagram more than the verbiage. To be sure, we need clarity on what the TS wants. The drawing contained no series switches except for the relays, which are switches, just controlled by other means.

IF the TS wants momentary switches Normally Closed then the diagram is once again wrong. But looking at the TS diagram, there are plenty of errors we can spend all day correcting each other. LED's are backwards. LED's have no current limiting. Switches are not correctly drawn. By anyone so far.
[edit] sghioto beat me by half a second to the post button.

 

might be what the TS is trying to achieve.

There it is "Might Be".

 

Switches are not correctly drawn. By anyone so far.

Would have to respectfully disagree with that statement.

 

This is what I come up with which might be what the TS is trying to achieve.
Added diodes D1 and D2. Is that cheating?
R2 and R4 would need to be 20% or less the resistance value of the relay coils to actually work. Not efficient.

View attachment 348282

That would work assuming the TS wants LED1 & LED2 ON until SW1 or SW2 is pressed. When SW1&2 are pressed together LED3 should light. If I understand it correctly.

 

Would have to respectfully disagree with that statement.

You've drawn NC mom switches. The TS drew NO mom switches.

 

Right you are, so I'm guilty of skimming and using Tony's post as the example.

That'll teach you.

 

You've drawn NC mom switches. The TS drew NO mom switches.

Since the TS said the switches were NC in post #1 then my schematics are correct.
In post #9 it appears they are NO but in the down position which means both relay coils are energized and the LED is ON.
However the position of the contacts does not confirm this.

 

No action taken:
LED's 1, 2 & 3 OFF
Relays K1 & K2 OFF (in the NC position)

Only SW1 pressed
LED 1 ON, relay K1 ON (switched to the NO position)
LED 2 OFF, K2 OFF,
LED 3 OFF

Only SW2 pressed
LED 1 OFF, K1 OFF
LED 2 ON, K2 ON (switched to the NO position)
LED 3 OFF

Both SW 1 & 2 pressed
LED's 1, 2 & 3 ON
K1, K2 ON

Will the TS please clarify if this is right or wrong?

 

Since the TS said the switches were NC in post #1 then my schematics are correct.

Yes. I think I've already agreed with you. Your schem's are correct.

 

Also need the TS to clarify the switches.
Are they normally open or normally closed when not pressed?

 

With all respect:

Not being picky here - this circuit will do exactly as described. However, at all times current is flowing either through the LED or through the relay, depending on whether SW1 is pressed or not. Constant current draw. If battery powered then this is going to be a battery killer. Just how much current - we don't yet know. LED Vf? Relay current draw? What value for R2? Will the relay pull in at a diminished current? LOTS we don't yet know.

 

Correct, which is why I stated not efficient.

 

I'm going to lunch (or brunch). Post 9 presents a whole new problem: How to de-energize LED's 1 & 2 when LED 3 is lit (via relays). It's doable. But the belly wants what it wants. Be back later.

 

OK, Y'all: Have at me. But I think this will work.

I would like the LEDs in series (edit to quote: LED's 1 & 2) with the switches to be able to be off when the LED on the relay contacts is powered.

No action
No LED's

Press & Hold SW1
LED 1 Lights up.

Press & Hold SW2
LED 2 Lights up.

Press & Hold SW1 & 2
K1 activates; LED 3 Lights up, LED's 1 & 2 extinguish.

Under this scenario never are all three LED's lit at the same time. It's also impossible for LED 1 & 2 to be lit at the same time.

It may even be possible to forego the relay all together and just put LED 3 in its place. No wasted current.

 

Only, if all LED's are the same current and Vf then all three will light. Probably will require the relay in post #34. LED 3 will only light if SW1 & 2 are pressed and held. Now we only need to wait for the TS to return and reply. It's been almost 10 hours since their last post. Have LED 3 draw more current than 1 or 2 and LED 3 will be the only one to light up.

 

That all works if using NO switches.
Don't know if the relays are required.
I'm waiting for the TS to confirm this and the switch type.

 

That all works if using NO switches.
Don't know if the relays are required.
I'm waiting for the TS to confirm this and the switch type.

So am I. Or at least I was. I'm now convinced the TS has lost interest in this thread. So we may never know the details.

 

Does the TS even know the meaning of N.O. and N.C.?

 

There is a standard procedure for developing logic circuits that has been around for many decades. I would have been very useful to have applied it in post #1.
The process is called "creating a truth table", and requires a list of inputs on one axis and a list of outputs on another axis.
I am guessing that at least a few visitors to this thread might be aware of that process, which would have been useful.