Questions tagged [solid-state-relay]
A solid-state relay (SSR) is a switching device that accepts a small control signal to control a larger load current and/or voltage. In many ways they perform the same function as an electromechanical relay, but without any moving parts. They have many advantages, but also some disadvantages compared to a mechanical relay.
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Inconsistency in switching frequency vs switch-off delay on a solid-state relay
I'm looking at the specifications of this solid-state relay:
https://eshop.weidmueller.com/en/topl-24-110vdc-5-110vdc0-25a-trak/p/2773600000
What's weird is that it claims 10 Hz switching frequency, ...
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AC SSR Failing On after short time
I was reading earlier about someone using a SSR that would stay on after being triggered. Suggestion indicated that the load was too small which can cause this problem and an SSR small SSR with less ...
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12 V DC 120 A Starter Relay Schematic Help to Power Motor [closed]
I want to verify if this relay circuit makes sense before I use it to power my motor. The concern I have is with the +44.4 V positive line seen by my relay. I am not sure if that is rated for the ...
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Reliable and safe power relay (1500W, 7A) - advice needed
I need advice for choosing a reliable & super-safe (won't catch fire, contacts won't weld) relay.
Use case: temeperature control system, switching 1500W electric heaters (resistive), 230 VAC, 6-7 ...
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Controlling power for 24DC water pump on autonomous agricultural planter prototype
This application is for an autonomous agricultural field planter. I need to turn the power on to a 24VDC water pump on the planter with a BeagleBone Black so long as the water pressure, monitored over ...
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SSR inrush current Issue
I am using the AQ10A2-ZT4_32VDC SSR for a circuit. Its datasheet mentions a maximum input current of 20 mA. I added a series resistor of 550 Ω and tried to drive the input coil from a digital power ...
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how to short two pins in solid state manner of a to turn on a device
I have an inverter, which I want to turn on/off remotely and designing a circuit using ESP8266.
As usual the inverter's control board has two special pins and if i short them using a metal wire or ...
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Triac controlled actuator
https://youtu.be/pW1gB3Ce87s?si=-yP7r2tN2IGv82zw
Can someone explain what is happening in this video please. Why doesn't this test cause a short circuit? Thank you
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Load Side vs Switch Side Snubber for TRIAC
I want to switch AC ventilation fan and several LED bulbs with a custom made Solid State Relay. Line is 220VAC and max current will be 2A. The fan won't be bigger than 150W. The loads are not exactly ...
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How does zero crossing opto-TRIAC not cause self-triggering of main TRIAC?
I want to turn on/off LED bulbs and AC fan from a microcontroller. No chopping control is required. I only needed isolation and low noise soft switch that's why I've chosen a zero-crossing opto-TRIAC ...
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Digital output (open collector)
I have a controller with a digital output configured as open collector. The wiring diagram in the manual is shown in the image below. The manual indicates that the diagram is internal (if I'm ...
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Best Dimming Cycle Period for longevity of a heating element
I want to 'dim' some 3kW heating elements to provide variable output i.e. between 0 & 100%.
I intend to use zero-crossing solid state relays.
let's say, for example, I want to run the heater at 50%...
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How can I achieve a potential-free (dry contact) without using a mechanical relay?
I'm working with an ESP32 and need to trigger a potential-free (dry contact) input on a system (SECUREconnect 200), from my understanding of product documentation it expects a floating contact (like a ...
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Solid State Relay Photovoltaic driver not turning off - LTspice
I am trying to simulate solid state relay for 24Vac residential controls. To maintain some flexibility on design, I'm not using some integrated solution. Here a photovoltaic MOSFET driver such as this ...
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Mosfet relay burning out powering zone valve
I designed and built a custom zone controller for my HVAC system. One of the main tasks is to open and close zone valves by switching the 24VAC supply to the valves. I'm using Omron G3VM-61VY3 MOSFET-...
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