How to make a pulse relay?
There are quite a few types of relays, but the problem with the usual is that they require constant supply of energy, or voltage. And if there is no place or in order to save you can not afford it? Is there any way to fix this? Yes, and help in creating schemes in such cases will be able to pulse relay. What is it like, how does it work? What features of the scheme should be taken into account by those who decide to make it their own hands? A conventional relay is a card in which there is a built-in system for receiving pulsed information signals.
Principle of operation: how does a pulse relay work?
Such a device has a strong advantage - there is no need to constantly apply voltage for successful operation. Energy in this device is used very efficiently. Therefore, the inclusion trimmer can be found in many electronic devices. To better understand the principle of operation, it is necessary to consider it in conjunction with the schematic component. Therefore, they will be described together.
Impulse relay circuit
It’s easy to do it yourself. The device itself is represented by a sensor unit and an electric coil. It can be powered from a DC or AC source. But when it exceeds a certain threshold value, the coil activates a mechanism that changes the state of the contacts. So, if they were closed, they open, and vice versa. When power is applied to the coil, it generates a magnetic field, which, in fact, affects the switch mechanism. It essentially acts by transferring a state from one circuit to another.
The impulse relay is based on two schemes. The first is responsible for management, the second is the load circuit. Considering that all pulses are created solely due to electromagnetic fields, an important advantage should be noted - this device is noiseless. The elements of the second circuit also have a part that is responsible for the relay memory. In general, if you look at existing technologies, you can see that any low-voltage modular device has a mechanism that is responsible for storing data. Therefore, when disconnecting and reconnecting, the impulse relay "remembers" the last settings, information about the connection, network status and operation of the device itself.Considering the scheme, people who are technically educated may ask the question: why use such a device, if you can use a regular walk-through switch to track the light? But the fact is that even the simplest version of the relay offers a significant range of actions. Thanks to him, you can follow the lighting from three or more places. And for the connection does not require much effort. Let's look at what kind of data devices exist.
Several popular industrial-type designs will be reviewed:
- Pulse electromagnetic relay. Bistable type 411. Can transmit up to 12 V.
- Bistable type 413. The device has a special scheme, due to which the light is turned off after a certain period of time.
- Devices of a series 412 and 414. Combined in themselves characteristics of two previous types.
But keep in mind that the samples presented, although they are reliable, do not represent the entire range of devices. There are many other types of relays that are used in certain areas. So, the devices specified here are used when working with lighting or devices operating on a similar principle.
How to do it yourself?
And now to the most important thing - how to assemble it yourself? Take as a basis a solid-state polarized relay in which a timer is embedded. If it is bipolar, then two switches are needed for operation, and for a single-pole one - a change of polarity. Schemes proposed within the article will allow you to assemble a device with such characteristics:
- 12 V and 0.03 mA (ideal for use with a solar panel).
- The resulting output current will have 7 A.
- There are four switches.
When the device will work in the commit mode, then every time a signal arrives, an instantaneous pulse is generated. If necessary, set the timer usually choose working in two time ranges: up to one second, and 1-100. But if there is no desire to complicate, the scheme of the impulse relay presented here can fully satisfy you. In industrial designs, there is already a setup system, in home-made devices you will have to create it from scratch.
As you can see, the impulse relay circuit is not so complicated. It’s quite possible to do it with your own hands, but be careful.After all, although the voltage is not great, injury in case of violation of safety engineering will be very painful. And how nice it will be that the impulse relay with your own hands made, will add a certain comfort and save energy.