Basic , with Relay's Code Circuit Diagram...

[HD ELEKTRONİK]

Basic , however effectual a Circuit Diagram.


Edit:English translation in Circuit.

 

[Nigel Goodwin]

Why are you posting random pointless diagrams?.

 

[HD ELEKTRONİK]

Why are you posting random pointless diagrams?.

Yes.Sorry...
I translate in English this Shema.

 

[ljcox]

I'm not sure why you posted this circuit.

It seems more complex than is necessary. For example, R12 is not required.

I suspect that it could be done with less relays.

Attached is an electronic one that I designed some years ago.

L is the door solenoid.

The counter is advanced each time the correct button is pressed. If the wrong button is pressed, the counter is reset.

 

[ljcox]

Here is how I would do it with relays.

 

[HD ELEKTRONİK]

Here is how I would do it with relays.

You design have more nakeds.
...
...
So my shema have very very traps.
Example that have Total Operation Time , and more Turn On and Turn Off Circuits.Thats important.
...
...
Yes , R12 is extra.
...
...
And this topic name is "Basic , with Relay's Code Circuit Diagram... ".
Also with not other Electronic Component.(IC , PIC , or microProcessor).

 

[HD ELEKTRONİK]

Please Check , ERROR ...

**broken link removed**

 

[ljcox]

You design have more nakeds.
...I don't understand what you mean by "nakeds". I think you mean weaknesses.
...
So my shema have very very traps. I don't know what you mean by "traps". I think you mean that your circuit includes several techniques to make it difficult for someone to open the door without knowing the code.
Example that have Total Operation Time , and more Turn On and Turn Off Circuits.Thats important. I don't understand "Turn On and Turn Off Circuits". I think you mean delay circuits.
...
...
Yes , R12 is extra.
...
...
And this topic name is "Basic , with Relay's Code Circuit Diagram... ".
Also with not other Electronic Component.(IC , PIC , or microProcessor).
I think you mean that you want to do it with relays, not with electronics.

The "total operation time" in my circuit is done by R1 & C1 & Q2. The timing starts if X1, X2 or X3 are operated. I noticed that your circuit has a delay in the operation of the Door Solenoid. I do not think that is necessary, but this may be one of your "traps" intended to make it difficult to circumvent the system. Such a delay could be added to my circuit if necessary.

 

[ljcox]

Yes, your point about the invalid buttons is a good one.

In my first design, I had an extra relay labelled E (for error) that operated if an invalid button was pressed. But I felt it was unnecessary, so I removed it and made double use of X4.

However, this leads to the problem you have mentioned.

Here is my first design.

 

[HD ELEKTRONİK]

...I don't understand what you mean by "nakeds"

nakeds is exposed...

I don't understand "Turn On and Turn Off Circuits".

Ok...I explain later.

The "total operation time" in my circuit is done by R1 & C1 & Q2. The timing starts if X1, X2 or X3 are operated.

Ok...
...
...
So , please see your in shema error.

 

[ljcox]

nakeds is exposed...


Ok...I explain later.



Ok...
...
...
So , please see your in shema error.

What error?

Note that I have just edited my previous post as there was a minor error in the circuit. (D4 should have been D5)

You responded to this post while I was editing it. So you have not read some of my comments,

 

[HD ELEKTRONİK]

...I don't understand what you mean by "nakeds". I think you mean weaknesses.

Yes.

I don't understand "Turn On and Turn Off Circuits". I think you mean delay circuits.

Yes.

But some errors is ;

**broken link removed**

 

[ljcox]

I don't see what the problem is.

Your "Error connect" drawing is not correct. DS is not operated directly by B4.

X4 operates when B4 is pressed. DS operates when X4 operates, ie. B4 AND X4 must be operated to operate DS..

When B4 is released, both X4 and DS release.

This is exactly what I intended.

I have made a minor improvement to my circuit.

I have changed it so that if B2 or B3 is pressed out of sequence, relay E operates and releases any X relay that is operated.

 

[HD ELEKTRONİK]

No , please again check...

**broken link removed**

 

[ljcox]

Answers and questions in response to your points:-

1. I'm not sure what you mean. Do you mean that the N/O contact opens 2 ~ 5 ms after the coil circuit is opened, ie. the relay release time? Why is this an issue?

Also, remember that the diode across the coil will increase the release time.

2. X3 is supposed to release when X4 operates.

3, 4. Yes, the current through the X4 contact is Ir + Ids. That is how it is meant to be.Why is this an issue?

I explained how it works in my previous post, ie. X4 operates when B4 is pressed. DS operates when X4 operates, ie. B4 AND X4 must be operated to operate DS.

Hence, X4 and DS both release when B4 is released and the circuit returns to its initial state.

 

[HD ELEKTRONİK]

3, 4. Yes, the current through the X4 and B4 contact is Ir +
Ids.

Why is this an issue?

Because this is issue and more.
Also DS from where negativ to pass ? (Answer : B4)
...
DS's in circuit 1A or more Current to pass.
1A current is for push-buton or to be too much.

 

[ljcox]

Now I understand.

The coil current of DS is too much for the B4 contacts.

Here is a simple solution and it has the additional advantage that D5 is not required.

 

[HD ELEKTRONİK]

Now I understand.

The coil current of DS is too much for the B4 contacts.

Here is a simple solution and it has the additional advantage that D5 is not required.

Yes...Now DS-B4 problem is OK...

 

[ljcox]

That's good.

It is possible to include B1 and B4 in the error logic.

It will require the following extra components:- 1 relay, 3 diodes, 2 capacitors & 2 resistors.

The resistors and capacitors are necessary to increase the release time of relays X4 and E by a small amount.

This necessary to ensure that any operated relays (ie. X1, X2 or X3) will release before X4 or E release.

I'll leave it to you to work out how to do this - if you wish.

Let me know if you want to see my method and I'll post it for you.

 

[HD ELEKTRONİK]

Firstly , Error Relay Coil parallel appr. 4700uF Condensator required.