Aprenda fácil a inverter sinal negativo pra positivo usando relé

⚡ Want to be a successful electrician? Check out my complete training. Click here 👇🏽 https://eletrica1.ead.eunaupmotors.co... --------------------------------------------------------------------------------------- In some situations, when installing an electrical component in a car, we find ourselves with a signal incompatible with what we want. For example, a light bulb has a direct negative signal and needs a positive signal to activate, but its activator only sends the same negative signal, which will not be enough to turn on the bulb because it needs both a positive and a negative. In this and other similar cases, it is necessary to convert the signal using an auxiliary relay. The auxiliary relay has the function of assisting an activator that does not have the full capacity to support the energy that the component being activated needs. But there are also other functions that the auxiliary relay can perform very well, such as polarity reversal. To perform this reversal, we must correctly configure the connection of the relay terminals. I will use an example to make myself clearer. If we have a lamp that needs a positive signal to be activated and we have a switch with negative activation, then we will connect the auxiliary relay as follows: positive to pin 30 of the relay, positive to pin 85 of the relay, the wire coming from the switch goes to 86, and the wire that goes to the lamp to activate it should be connected to 87 of the relay. In this way, when the switch is activated, the negative signal will interact with the positive of the relay coil, bringing pins 30 and 87 into contact, causing pin 87 to receive the same positive signal as pin 30, and thus turning on the lamp. This procedure can be perfectly used when the need for polarity reversal is reversed, simply by reversing the polarity from positive to negative of pins 30 and 85. Another advantage of using this system is that, in addition to polarity reversal, it will also be possible to power a consumer of up to 40Ah with a driver that supports less than 0.5Ah. I hope I've made the procedure for reversing the polarity of a wire using a 4-pin auxiliary relay clear. I'll leave it at that and look forward to our next topic, thanks. The most complete course in Brazil, no fluff. Enough of long and tiring courses, learn about our teaching method that has already been tested and approved by students all over Brazil. More than 2,600 students trained. I know what works in practice in a workshop and I will teach you in a simple and online way, from basic to advanced. You will learn, even if you have no knowledge, to perform the services just like the best professionals you know. Method tested and approved by thousands of students across Brazil. ⚡ Successful Electrician. Click here 👇🏽 https://eletrica1.ead.eunaupmotors.co... 🔊 Car Audio System Installer. Click here 👇🏽 https://autosom.ead.eunaupmotors.com.... ▶ Facebook:   / eunaupmotors   ▶ Instagram:   / eunaupmotors   ▶ Telegram: https://t.me/Eletricista_UpMotors ▶ Website: https://www.eunaupmotors.com.br/