» Electronics »Switching on the lamp without pressing

Turn on the lamp with a button without fixing

Electronics / Fixtures
Added 14 comments

Good day dear the inhabitants of our site!
The proposed device enables the lamp to be turned on using a button without fixing.
The device is powered by AC 220 V using a rectifier bridge VD4-VD7. The lamp lamp is included in one diagonal of the bridge, and the thyristor VS1 in the other. The lamp lights up only if the thyristor is open. The maximum lamp power is determined by the permissible rectified current of the bridge diodes and when using 1N4007 diodes is 100 W

Step one

We need a breadboard, a convenient thing for assembling and configuring devices. A soldering iron, wires, solder and a bunch of radio components according to the list.

Radio Parts List
9pcs R1-330k, R2-1k, R3-10k, R4-470k, R5-100k, R6-20k, R7-10k, R8-100ohm, R9-2.4k resistors
Capacitors 5pcs C1, C2-0.01mkf, C3-1mkf 25v, S4-100mkf 25v, C5-0.1mkf
Diodes 6pcs 1N4007
Zener diode VD2 D814G
Transistor VT1 KT814B
Thyristor VS1 BT151-650R
Chip K561TM2
Power connector
Button without fixing
Second step
We solder all our radio components as shown in the diagram

I got it like this.


Step three
Checking the operation of the circuit, my circuit worked the first time! Attention in the circuit there is a life-threatening voltage of 220 V so use all safety precautions!


It is advisable to use a resistor of R6 20k with a power of 2W since it heats up during operation
Thyristor VS1 can be replaced by domestic KU202N, KU202K
Chip K561TM2 can be replaced with a foreign analog CD4013
When the device is operating for about two hours with a 60W lamp, heating the parts is not a significant radiator on the transistor and thyristor can be omitted

It was a prototype of the device fully configured and tested, in the future I will reduce it by 2 times and will use it as a passage switch!

A short video on the operation of the device

I hope my homemade product will be useful for both beginners and experienced radio amateurs!
See you all! See you soon!
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Added 14 comments

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14 comments
0
Reply To quote A complaint
Quote: Ivan_Pokhmelev
About the yard, I gave just an example. In the same way it can be used in some large room, house.

Probably possible, but for some reason they’re not using it. You will not argue that this is KNOW-HOW?
Against the scheme itself, I have nothing against it (with or without modifications), a conversation about the practicality of what was done.
0
Reply To quote A complaint
About the yard, I gave just an example. In the same way it can be used in some large room, house.
-1
Reply To quote A complaint
Replacing a conventional switch is completely pointless. The only advantage of this switch is the ability to control the light source from different points, with the ability to easily add control points without touching the previously set ones.
0
Reply To quote A complaint
Quote: Roman2468
This device can be used not only as a passage switch, it can easily be replaced with conventional switches without any alteration of the circuit, the device is connected to the circuit breaker and there are no contacts or mechanical parts that break down over time.

This is again the reasoning sitting on the couch. "You can, but be careful!" - they say in such cases.
Author +1
Reply To quote A complaint
This device can be used not only as a passage switch, it can easily be replaced with conventional switches without any alteration of the circuit, the device is connected to the circuit breaker and there are no contacts or mechanical parts that break down over time.
0
Reply To quote A complaint
Quote: Ivan_Pokhmelev
But "drag" to each button of the wire (if more than two), the hand does not rise.
So this design has the advantage that it is necessary to drag 2 wires (thin ones, such as ШВВП 0,5х2), rather than three (minimum 1,5х3). And the connection of the buttons is not serial, but parallel.

Is this really an advantage? What is the difference how many wires to drag? You still need to drag it ?! And the constant operation of the device, energized ?! And how do you imagine these thin wires stretching across the yard, into every corner?
-1
Reply To quote A complaint
But "drag" to each button of the wire (if more than two), the hand does not rise.
So this design has the advantage that it is necessary to drag 2 wires (thin ones, such as ШВВП 0,5х2), rather than three (minimum 1,5х3). And the connection of the buttons is not serial, but parallel.
-1
Reply To quote A complaint
Quote: Ivan_Pokhmelev
Feed-through switches, of course, are simpler and more reliable. But when it is necessary to manage from a large number of places, especially in the case of adding control points to existing ones, the proposed system is more convenient. And if the low-voltage part is powered from a separate source with galvanic isolation from the network and from the thyristor, it will be safer.

Ivan, here I am about this. As a practical person, I immediately try on a “shirt” in practice. So I did not find such a "place" in my House (not apartment), for this device. The principle of the device’s operation is not new, while eliminating your “if”, reliability will increase. But "drag" to each button of the wire (if more than two), the hand does not rise.
-2
Reply To quote A complaint
Feed-through switches, of course, are simpler and more reliable. But when it is necessary to manage from a large number of places, especially in the case of adding control points to existing ones, the proposed system is more convenient. And if the low-voltage part is powered from a separate source with galvanic isolation from the network and from the thyristor, then it will be safer.
0
Reply To quote A complaint
Quote: Ivan_Pokhmelev
The lamp control of two, three, in general - any number of places: I went into the courtyard from the street - turned it on, went, say, into the bath-house, turned it off, left the bath-house, turned it on, went into the house and turned it off.

All this seems to be clear to me and so, only in practice I can’t imagine the yard. In order to "drag" a wire into every corner and go to "press" these buttons. False positives (street) are not excluded, there are plenty of factors for this. I personally weigh a savings on the corners of the house, under a ledge with a photo relay. Simple and cheerful. Lighting is enough to go to any corner of the plot. In addition, lighting also serves “honest” people. For whom it is not at all desirable. In the veranda at the door, there are three-pole switches (similar to ordinary ones). Freely sold in the store. At any door you can turn on and off the light. And without any, not reliable and not safe in this case, electronics.
This is what I had in mind.
0
Reply To quote A complaint
The lamp control of two, three, in general - any number of places: I went into the courtyard from the street - turned it on, went, say, into the bath-house, turned it off, left the bath-house, turned it on, went into the house and turned it off.
+1
Reply To quote A complaint
Two light bulb passing between them. One pressed, the lamp turned on, crossed the section, the other pressed, the lamp went out. And so in any combination.
0
Reply To quote A complaint
Quote: Ivan_Pokhmelev
For the switch through passage - that’s it.

I don’t see the practical application of this "that" ?! If you still need to click, then the meaning of "bother"? What does “walk through” mean, is it like in practice? Turned on and left? What to do with the "beach"?
0
Reply To quote A complaint
For the switch through passage - that’s it.

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