Answer to a question !

[freddie belmont]

First of all A boffin is someone with a super brain.


Here I go again !

I can bulid the chaser around a 4017. Like the cana/velleman kits.

It's the mains + to - swiching i realy need help with.

Maybe you don't bulid stuff to go out and work with!

If I spend my cash I want a working project.

I asked for help not for someone to spend a life time on.

Help me bulid this,
If you can help please do.

But don't write back crying because you can't

 

[tansis]

http://discolitez.com/circuits.shtml

of course you may not have or wish to carry around the computer,
but the circuits are still valid for use with stand alone controllers based
upon a 4017 or a PIC micro

 

[jrz126]

I'm sure you are going to get some help with a response like that...

 

[freddie belmont]

I'm sorry if I offened anyone,

But I know what I can't do, that's why I was asking for help

 

[Roff]

First, it would help if you would post in the thread you started on this topic.

You need to provide a fairly detailed block diagram of what you want, with it partioned and labeled - I can do this block, I need help on that block. Your most recent description doesn't sound much like the original one.

Be aware that you still may not find anyone with the knowledge or time to solve all your problems.

 

[bmcculla]

The best way to get help on a project like this is to post a plan/ idea for how you think is should be done and get feedback from us or ask a more specific question about the implementation. Really broad questions are hard to answer.

To answer your question about mains switching: What you need is a triac and a triac opto isolator with a zero crossing detector. Triacs let you switch AC power. The opto-isolator keeps your digital circuit safe from the mains. If you google on triac circuits and triac opto isolators you should find tons of info. The zero crossing detector only turns on the triac when the voltage is low to keep from broadcasting tons of interfearance.

 

[gmphadte]

Search for the applications of MOC3020

 

[kinjalgp]

Are you looking for this?
https://www.electro-tech-online.com/threads/convert.360/

 

[freddie belmont]

thank you - heres the next stage

I'm looking for a circuit that will opperate mains voltage 110 volts

Positive to negitive switching. I can do it with relays, but wondered if there was away to do it with triacs?

Can anyone help.

Thankyou

Freddie

 

[jrz126]

Looks like that schematic runs on 230VAC, I dont see why it wouldnt work for 110VAC. and that schematic doesnt use relays.

 

[freddie belmont]

I'm looking to build the next stage!

The diagram sent in is great for the driving stage.

But I'm looking for positive to negitive switching to add on to this.

I can use relay's, but wondered if there was another way of doing it using a triac type devices,

Freddie

 

[williB]

Re: I'm looking to build the next stage!

The diagram sent in is great for the driving stage.

But I'm looking for positive to negitive switching to add on to this.

I can use relay's, but wondered if there was another way of doing it using a triac type devices,

Freddie

hi freddie
i am not sure what u mean by positive & negetive switching ??

 

[kinjalgp]

Re: thank you - heres the next stage

I'm looking for a circuit that will opperate mains voltage 110 volts

The same circuit can be used with 110V. Read the description.

 

[freddie belmont]

THE NEXT STAGE

The diagram is fine BUT stop at the triac 100 VOLTS AND before the lamp.

I'm looking for an add on circuit to switch polarisation.


I NEED TO MAKE THE LIVE NEGITVE AND THE NEGITVE LIVE
I could use a relay to switch LIVE & NEGITIVE but wondered if there was another way using triac type switching so I don't have to use relay's


TRIAC == {LIVE TO NEGITVE SWITCHING AND VICE VERSA} == LAMP

IT COULD BE I STILL HAVE TO USE A RELAY TO DO THIS BIT BUT WONDERED IF THERE WAS ANOTHER WAY.
TO DO MAINS SWITCHING ?

 

[Nigel Goodwin]

Re: THE NEXT STAGE

The diagram is fine BUT stop at the triac 100 VOLTS AND before the lamp.

I'm looking for an add on circuit to switch polarisation.

IT COULD BE I STILL HAVE TO USE A RELAY TO DO THIS BIT BUT WONDERED IF THERE WAS ANOTHER WAY.
TO DO MAINS SWITCHING ?

The only sensible way would be to use a relay, but (more importantly) WHY do you want to this?.

Mains is AC, and not polarised - the two wires are LIVE and NEUTRAL, not positive or negative - the only difference is that the neutral wire is grounded at the substation, and is the common wire for three phase.

 

[freddie belmont]

Why do I want to do this!

I have wired up some light boxes in this case 110 volt Ac
five circles,
going in and out, off the controller (a starburst) fx

I have wired them so if you swap all the feeds over at the same time

You get a cartwheel fx

Now you know why!

Is there another way with out using relay's

freddie

 

[bmcculla]

If I understand you correctly you want to have a control input that switches all the lights that would be on, off and all the off lights on. If this is what you want you should switch the control inputs not the triac circuit. An XOR gate will allow you to have a input that inverts (i.e. changes the on signal to an off signal and vice versa) the control signal.

I think the words you are using are confusing people. Live and negative are words used for two different things so when you put them together its quite confusing. The triac circuit lets you switch the lights on and off - if you stick to the words on and off for the lights, and high (positive voltage) and low(0 V) for the control signals people will understand you much better.

 

[williB]

its 15 dollars - american but you would only need two ..no?

**broken link removed**
DC/AC Solid State Relay


Screw terminal with hardware
Photo isolation
Metal mounting base
Control Voltage: 3-32VDC
Type: DC/AC
Contact style: SPST
Contact Voltage: 240 VAC
Contact Current: 10A
Pins: 4
Terminal Type: Screw terminal
Agency approvals: UL
Size: 2.3"L x 1.7"W x 1.1"H
Zero crossing

 

[Nigel Goodwin]

Re: Why do I want to do this!

I have wired up some light boxes in this case 110 volt Ac
five circles,
going in and out, off the controller (a starburst) fx

I have wired them so if you swap all the feeds over at the same time

You get a cartwheel fx

Now you know why!

No! - I don't see how swapping live and neutral would make any difference at all?.

If you wanted to swap individual chains of lamps to a different output it might make a slight amount of sense - but you've never suggested that?.

 

[freddie belmont]

drawing

I'm not too good with pictures
two lighting fx'x from one box by switching

First fx starburst
seccond fx lines