io relay

ANY Timer Rrelay
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Powerful io relay for High-Risk Applications
Reliable io relay Designs for Industrial and Industrial Applications
CHINA – ?¡ãAny Electronics?¡À proudly presents their whole range of io relay . They provide a full set of io relay goods and other interrelated solutions. These units are noticed in different applications such as commercial applications, industrial control circuits in addition to OEM Panels. These devices include great precision and repeatability. The regular io relay that happen to be designed today need very tiny panel space.

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Happy Store WI-FI Relay Board, Android Iphone Remote Controll, Network IO, with Case

  • Working voltage: 12 v
  • working current: 100 ma
  • working temperature: - 25 ~ 75 ° C
  • storage temperature: -40 ~ 85 ° C
  • storage humidity: 5% ~ 95% RH


WIFI interface, via WIFI connection for network control.

Ethernet interface, can through the general network cable connection way to control.

5 channel large current output, 2 channel optocoupler input.

Unique AP+STA working mode, can work as AP when join into router. This allows the module accept local mobile terminnal(cell phones, tablet PC) control as AP, when join in router to connect outer net.

Unique dual TCP connect control, corresponding with above trait, local as TCP server accept client control, when connect to remote server as TCP client

Supply core module detailed information, application program demo, support customized app(IOS, Android)

We have user guide/short user guide and detail user guide for the core module three PDF files for your reference,if you need to read them please email awaynying@gmail.com.thanks.

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Price: $115.99


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Cody asked Need assistance designing transistor circuit for raspberry pi?

I'm trying to use the GPIO pins in my raspberry pi to drive a relay. I have a 12 volt rechargeable battery (12.0 AH) and a 12 volt relay, along with a 2N2222 NPN transistor. I built a simple transistor switch circuit by using the 12V battery positive to a resistor (R1) followed by the relay coil and a diode at the collector, and connected the grounds and the emitter of the transistor. I've discovered that without anything connected to the base, the relay still trips if the battery is fully charged. Once the battery discharges a bit the circuit seems to work (GPIO plus R2 at the base turns on the relay). I've attempted to vary the value for R1 but 10K is too much (relay won't trip at all) and 5K is too little (relay always tripped regardless of base). And the charge level in the battery seems to affect this circuit. The relay is 12V. Any suggestions for this? Thanks so much! Here's the circuit I'm using (to the best of my abilities with ASCII): +12V from battery ----- Resistor R1 -- Relay Coil ----- Collector of NPN transistor Diode -|<--- tied to relay coil terminals +3.3V GPIO ----- Resistor R2 ----------------------------- Base of NPN transistor Ground of 12V tied with Ground of Raspberry Pi ---- Emitter of NPN transistor Relay I'm using: https://www.jameco.com/Jameco/Products/ProdDS/2167453.pdf Jameco part number: 2167453 Hopefully the formatting of this post don't get messed up when I submit. Thanks so much for the help.

And got the following answer:

Provide some kind of scrawled schematic if you can. Useful responses may result. I'm just not sure how to read what you wrote in terms of a schematic. (But the main idea that comes across to me wouldn't even work -- it sounds like you have two resistors with one from the I/O control line to the base and another one in series with the relay?) Also, name the relay... I'd like to know the pull-in current as well as the voltage required. More details would help a lot. EDIT: So, this?         http://www.infinitefactors.org/schematics/cody_relay.png That won't work, if so. And did you wire up the diode in the direction I show? Or the OTHER direction I don't show? Either way, doesn't matter. Won't work. It appears that the GPIO can source or sink from 2mA to 16mA, in 2mA increments. With about 85mA required by the relay and a β=20 estimate for driving the 2n2222, I'd say you need MORE than 2mA. Probably should set it to the maximum. You won't need it, but it lowers the drop at the GPIO pin. May as well. Just use an appropriate value for R2, which you don't mention. The Vbe for a 2n2222 is about 0.7V at 2mA collector current and goes up by 60mV for every factor of 10. So, worst case would be about 0.82V. They guarantee only 2.4V on the output. So at 16mA setting, that works out to about 56Ω. So with a base drive of say 5mA you will see about 300mV drop and at 10mA that will be about 600mV drop at the pin. Let's assume 5mA is okay, for now. So you will have 3V at the IO pin and lose about 820mV at the 2n2222. This means you want a 390Ω or 450Ω resistor for R2. Go with the 390Ω and get a little more current there. If my diagram guess about your circuit is right, lose R1 by shorting it out. You don't want it. Make DARNED SURE you set up your GPIO for 16mA drive, too. Don't skimp on that. You can lighten the load on your GPIO, but that will require another BJT.

The io relay work very well with diverse applications that are specific to power distribution and protection. The relays include wide adjustment ranges using a scale which is easy to read either in three or four digits in accordance with the model. These io relay support in increasing the flexibility of your applications, lessen the all round energy and maintenance fees. You will find relays which are used for basic purposes which come in reliable designs with swift replacement alternatives. And you will find models which are applied for industrial applications and heavier duty applications that function on substantial loads. These items are made to meet the lifetime industrial control demands of the applications.
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