110v AC pulse on/off device

[hotrodjohn71]

Hi group. I have a 110v electrical item that i want the ability to turn on and off about every half second continuously.

There isn't much current draw at all. It's an old Christmas bells decoration.

What would you suggest for a pulse on/off unit I can plug my setup into that would cycle 110v AC?

Thank you

 

[Bluejets]

A 555 multivibrator module such as below. Likely others available on Ebay and the like.
If you're concerned with the relay wearing out simply slip in a solid state relay.

NE555 Frequency Adjustable Pulse Generator Module

NE555 Frequency Adjustable Pulse Generator Module is available from Phipps Electronics. The Australian online electronics store

www.phippselectronics.com

Using the 555 Timer | DroneBot Workshop

Learn how the 555 timer works in astable, monostable, and bistable modes. Then build five projects using a 555 timer.

dronebotworkshop.com

In your case, read "astable mode".

 

[hotrodjohn71]

Thank you.

 

[roughshawd]

plug in timer module

 

[AnalogKid]

I don't know of any "plug-in timer module" that can turn a load on and off twice every second continuously. That's 173,000 cycles per day.

If you know of such a device, please post a link.

And - Christmas was a while ago.

ak

 

[danadak]

Something like this -



mBlock block config generates code that you use to program small Arduino board.

So :

1) Buy Arduino Nano board, its ~ $3
2) Download and install mBlock and Arduino IDE, free.
3) Buy SPDT switch to control input to D5 on Arduino board to switch pin D5 to ground or 3.3V.
4) Buy SSR rated for 110 AC (200V peak), and current X 2 needed for lights and for margin,
that will turn on with 3V logic signal.
5) Buy 5 V AC/DC adapter, say 100 mA or so, to power and program Nano.
6) But USB cable to connect Nano board to your PC or laptop for programing.
7) Wire up SSR to Nano and to lights.
7) Using mBlock connect to Nano and program it.

Done

 

[danadak]

Post on wrong thread, deleted.


Regards, Dana.

 

[poormystic]

Hi
the trouble for me in finding a solution for you is that the voltage that you're working with really needs handled by a professional.
There are opto-coupled triacs in the world, sure, and there are 555 timer IC's too, but wiring that sort of stuff up is a bit hazardous.