Powerful arduino high voltage relay for High-Risk Applications
Reliable arduino high voltage relay Styles for Industrial and Industrial Applications
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This is a 5V 2-Channel Relay interface board, Be able to control various appliances, and other equipments with large current. It can be controlled directly by Micro-controller (Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic. Features; 5V 2-Channel Relay interface board, and each one needs 15-20mA Driver Current; Equipped with high-current relay, AC250V 10A ; DC30V 10A; Standard interface that can be controlled directly by microcontroller (Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic); Indication LED's for Relay output status Package Content1x SainSmart 2-Channel 5V Relay Module
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Christian asked how to make a switch that you don't have to press?
how do you make a switch that you don't have to press? like what i mean is that a switch that is digital, you just need to send a command to the arduino and the arduino will let the voltage flow. e.g.: the arduino can't produce 9v, but my project requires 9v, so i need to make a switch which i don't have to press to allow current to flow from the 9v, i just need to tell the arduino to activate output 8 or something, so that the arduino will allow the current to flow from the 9v. is there a type of switch where you just connect the positive electrode of the 9v battery and connect a wire towards the arduino?
And got the following answer:
One idea is to get the arduino to operate a relay that switches a 9V power source. One of the digital i/o pins is used. The i/o output is a logic state, either 0V or 5V (at a limited amount of current, probably a few milliamps). It can operate a driver for the relay, a transistor, which increases the current enough to operate the relay coil.. Some of the digital i/o pins can supply up to 40mA at 5V, but best to use the driver and relay suggested below. In the diagram the relay coil is operated by the transistor being on or off according to the state of the i/o pin. The transistor and the relay coil is on when the i/o pin is high (+5V), off when the pin is low (0V). The relay coil in the example operates with 5V supply, but you could use a relay with a coil to suit a supply other than the internal Arduino 5V supply (7 to 12V external supply). The diode shown is essential to suppress a high voltage spike when the relay is switched off. The contacts of the relay can be used as a switch to control a 9V supply, what you want. As you can see the driver transistor itself is a switch, and that is controlling the relay. It is called a low side switch because it connects on the non-supply side of the device being switched. There are also other transistor arrangements called a high side switch. One of these might suit your needs, but you need to explain your purpose, the big picture. You can search images using those key words to get more details about drivers as switches. I chose a relay because that is the simplest to understand. It is just a switch operated by a coil (magnetically operated, internally). Note that a relay needs a supply capable of delivering 30mA or more of current just to operate the coil. Invest in a cheap digital multimeter (DMM) to help with getting this working. You will have to write a program for operating the relay. Search for examples if digital i/o.
The arduino high voltage relay work very nicely with distinctive applications that are particular to energy distribution and protection. The relays come with wide adjustment ranges with a scale that is definitely simple to study either in three or four digits in line with the model. These arduino high voltage relay enable in increasing the flexibility of the applications, lower the all round energy and upkeep fees. There are relays which are utilized for common purposes which come in reliable styles with quick replacement solutions. And there are models which might be utilised for industrial applications and heavier duty applications that perform on substantial loads. These goods are produced to meet the lifetime industrial handle desires on the applications.
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