relay

I have a mechanical system I'm building and I want to use snap switches to control the order of operations. The order will be something like this. 1. Run 1 revolution of the electric motor, then stop motor. 2. Activate solenoid. 3. Activate second electric motor for 1 revolution. 4. Begin...

I need help with an idea i had. I’m trying to use RF to control a 24v relay. The receiver would need to turn on and off a normally open 24v rated relay. The transmitter would need to get its signal to turn on or off the receiver from a normally open contact wired to the receiver. Basically when...

Hello everyone! I'm looking for a circuit that amplifies the current for a 12v input so it's strong enough to trigger a relay coil. Here's the scenario I've got going: Recently i purchased a smoke detector and was planning on wiring it to my security system but the detector made the system...

Hi, I'm using a 12V DC /240V AC relay to power on my audio amplifier when the main Processor comes out of standby (it has a 12V trigger out that goes high). Amplifier is a Crown XLS 2502 XLS 2502 | Crown Audio - Professional Power Amplifiers Crown XLS2502 Stereo Amplifier Review | Audio...

Hey guys, I am relatively new to micro electronics, and am in desperate need of help! I want to bypass the muting circuit in a electronic piano. This involves either activating the relay, or pulling it to ground (BA3-5 Relay, and the highlighted LS1 in the picture below). Please could someone...

Hello everyone, I have a foot switch. I want to connect foot switch with stm32 mcu. So Im wondering about, can I use foot switch with 12Vdc or 5Vdc? Thank you for all.. Foot switch's link and specifications: https://www.cntd.com/cfs-201-16338302818884937.html

Hello, Sorry 1) if this is wrong place 2) Dumb question. I am working on smart irrigation project, I have Arduino connected with 4 sensors and 1 actuator, Arduino collect data and send to ESP32 using Reyax RYLR896 Lora Module connected to it. I keep all PCBs in one waterproof box, but this...

Hey dear everyone! I am trying to create a circuit that turns on and off. I want to do it with four Omron G2R-1-SN(S) AC 230V Relays and an industrial momentary push button (ELMARK EL2-BW07) I saw a DC circuit online that does this latching and dis-latching to turn on and off an LED but it...

Hello, While relays have a size advantage, an electrical engineer from a partner team tells me we should use contactors instead of relays for our ~7kW (single phase) and 22kW (3 phase) charge points. He said that the relays, when operating for long periods will have a higher chance of failing...

Hey all! I recently installed led back lighting on our TV setup. Unfortunately, the USB outlets on the tv are always powered. I have one of these energy conserve power strips (https://a.co/d/aLvpjJb) which detects when the TV is pulling more then "idle" current and then flips a relay which...

Hello and apologies if this has been posted before as I have scoured the forums without much luck. I am working on a 12 volt motorcycle system and trying to wire the turn signal warning light (it’s the, “you left your turn signal on dummy!” Light) to one single light instead of two. As the...

Hi, I've got a low current backup camera that I currently turn on using a cigarette port at the front of my vehicle. I want to be able to turn it on from the back also, using an external battery. The power from the cigarette port also supplies a monitor at the front, which I don't want when...

hi all I'm trying to control a 2 HP water pump works on one phase using 5V relay, but I feel it's not safe because it's pins are so thinner than the AC wires does using car cut-out relay will be good? should I use just one for the LIVE wire or two for LIVE and Neutral? note: contactors are so...

I have an esp32 to take measurements with an ultrasonic sensor equipped with a separate circuit board. The esp32 mostly sleeps, so to extend the battery life, I want to cut power to the sensor's board while the esp is sleeping. I measured a traditional relay to use about 70ma when it’s on. I...

Hi, I have a water level sensor is NO/NC type which will disconnect when water is full and connect when water is empty and I want to send a short pulse when water is full and when it's empty. I have a RF433 module which has 2 keys. If I connect a key to VCC, it'll send a code to its...

Hi, I am looking for some advice - I have a CCTV system running in my garden workshop using approximately 11W, running from a small UPS connected to mains power. On the roof I have a 19V 40W solar panel connected to a charge controller charging 12V battery. That is hardly being used so I want...

Well... I set up the following circuit and it didn't work as I expected. At this point, I'm no longer interested in "Why didn't it work?" question, but on "Why does it work like this?". Below I will describe how I think it should happen when I press SW1 and then I will tell you what actually...

Please refer to the diagram below. BX is +110v or 0v. (not sure DC or AC) NX110 assumes -110v. (Maybe 0v? not sure DC or AC) Y2T is 110v DC relay with a part number of KUP-14D15-110. Its operate voltage is 82.5v. When BX is 110v, the relay coils pick up. Why the relay chatters when C1 is...

I’m never one to stop at “simple,” but often find myself overthinking things. MY QUEST: I have placed a simple keyed switch along the ground wire to the transmission shift interlock. I want to be able to leave my car on while I run out for brief moments and not worry about someone seeing...

Bakground: I am designing a smart controller for an existing heating system. The system and pumps are controlled by 200V AC latching relays. As an interface to the existing controller, these are controlled by 24V DC relays. As a Mechanical Engineering I understand some basic electronics but not...