Efficient 12vdc solid state relay for High-Risk Applications
Reliable 12vdc solid state relay Designs for Industrial and Industrial Applications
CHINA – ?¡ãAny Electronics?¡À proudly presents their whole range of 12vdc solid state relay . They provide a total set of 12vdc solid state relay solutions along with other interrelated goods. These units are noticed in distinctive applications like industrial applications, industrial control circuits as well as OEM Panels. These devices include exceptional precision and repeatability. The standard 12vdc solid state relay which might be designed nowadays demand very small panel space.
12vdc solid state relays
12vdc solid state relays
12vdc solid state relays
SainSmart 8-Channel 5V Solid State Relay Module Board for Arduino Uno Duemilanove MEGA2560 MEGA1280 ARM DSP PIC
Specifications SSR Output (each channel) Load voltage range: 75 to 264VAC (50/60Hz). Load current: 0. 1 to 2 AMP. Power supply 5VDC / 160mA (all channel ON). Input control signal voltage: 0V - 0. 5V Low stage (SSR is OFF) 0. 5V - 2. 5V (unknown state). 2. 5V - 20V High state (SSR is ON). SSR Spec. Manufacturer: OMRON Part number: G3MB-202P, 5V version. Isolation: Phototriac. Zero cross: Yes. Rated output load: 2A at 100 to 240VAC. (50/60Hz). Load type: General purpose.
There was an error connecting to the Amazon web service, or no results were found for your query.
I'm holding a relay coil shut with a 12VDC / 500ma transformer (wall wort). The output of the relay is connected to a normally closed zone in my alarm system. I use this to tell me if the power has gone off while I'm not at home. However, with the transformer and relay only, I get no "power off" delay before the zone goes into alarm. Ideally, I'd like to get about a 30-60 second delay so that it won't go into alarm for short power outages. I don't have any way to do this through the alarm panel, so I need an electronic solution. I'm aware of a device which already does this (http://www.smarthome.com/7154.html) but I think I can do it cheaper with a capacitor (2, 3 .. ?) and a bleed resistor. Does anyone know the math and/or can you provide an answer to what size caps I need?
And got the following answer:
Trying to answer but YA taking breather. Or is it??? Edit: No it just doesn't want to display my answer. Try again... I may be reading your question wrong, but it looks like you want to charge the capacitor from the power supply, in such a way that if the power goes off the voltage on the capacitor will hold the relay closed for 30-60 seconds, until the capacitor discharges. That would work, but it is clunky, and you will need a big capacitor. Assuming that the relay will continue to hold closed until the voltage drops to about 60% of normal, C = 2 * T / R where R = the coil resistance of the relay Let's say you have a very small, low power relay with coil resistance 1200 ohms. For 30 seconds: C = 60 / 1200 = 0.05F = 50,000uF You would probably go for an aluminium electrolytic cap 47,000 uF, 16V. If your relay has a lower resistance coil, which it probably does, you will need a bigger capacitor, or several in parallel. You may need to charge the cap through a rectifier diode like 1N4001, so that when the power fails it doesn't discharge back through the power supply. The way I would do it is to use a darlington transistor, FET or solid-state relay to switch the line. Then you can do the same thing but with a much smaller capacitor, and you can run it from a battery or power direct from mains through a capacitor / rectifier circuit. Don't try that latter idea unless you know what I'm talking about, it's very easy to kill yourself...
The 12vdc solid state relay operate extremely properly with unique applications which can be particular to energy distribution and protection. The relays include wide adjustment ranges having a scale which is simple to read either in 3 or four digits as outlined by the model. These 12vdc solid state relay assistance in escalating the flexibility with the applications, decrease the all round energy and maintenance charges. There are relays which are used for common purposes which are available in reliable designs with rapid replacement alternatives. And there are models which might be utilised for industrial applications and heavier duty applications that operate on large loads. These products are produced to meet the lifetime industrial handle wants from the applications.
Their most recent merchandise are the Time counter, Timer Delay, 12vdc solid state relay, Swift Connect Couplings, Electronic Motor Couplings, Aluminum Couplings, Morse Couplings and numerous others. The website presents a detailed description of each and every model in different categories of 12vdc solid state relay couplings and sensors. These merchandise are really useful for high-risk applications. The 12vdc solid state relay are also readily available with options like various timing ranges and functions. The firm is currently on the lookout for agents and dealers who can market and sell their factory created items. They’re constantly on a lookout for developing new and more reputable products based on the desires and needs of the sector.