Are solid state relays like this safe to use on Audio Video receivers with 12V triggers?
https://ph.rs-online.com/web/p/soli...ELjH0E1xu_3HlkpoR5BoCguMQAvD_BwE&gclsrc=aw.ds
https://ph.rs-online.com/web/p/soli...ELjH0E1xu_3HlkpoR5BoCguMQAvD_BwE&gclsrc=aw.ds
I have used the Fotek 25A solid state relay (optical isolator triggered triac with zero crossing circuit). It needs anywhere from 3v to 32vdc to triggger. It’s for switching AC mains to the power. There are some that look similar but don’t work as well (noisy). The real ones don’t buzz.
Should be safe to use AVR 12V trigger to activate the SSR since it is utilize phototriac/photocoupler isolation.
Most will work, they need 5-32 V DC.
Use a rating for a capacitive load, means higher than resistive, just for safety.
Do buy a good brand, mount it properly on a heat sink if needed.
We have 25, 40 and 50V SSR units in continuous use, in place of contactors, much more reliable long term than contactors and relays.
As heater controllers in injection molding machine.
Quire common now, so using it in audio is okay, just make sure it will not add noise in the circuit.
Use a rating for a capacitive load, means higher than resistive, just for safety.
Do buy a good brand, mount it properly on a heat sink if needed.
We have 25, 40 and 50V SSR units in continuous use, in place of contactors, much more reliable long term than contactors and relays.
As heater controllers in injection molding machine.
Quire common now, so using it in audio is okay, just make sure it will not add noise in the circuit.
Of course...
25A is too much, but not much difference in same size different rated units in price terms.
Given that they are reliable, no hesitation in saying they are suitable for speaker relay use.
25A is too much, but not much difference in same size different rated units in price terms.
Given that they are reliable, no hesitation in saying they are suitable for speaker relay use.
Same story. If you want to use a solid-state relay to switch a loudspeaker signal, take an OptiMOS relay with big MOSFETs in anti-series.
Solid state relay need only a small amount of power to activate, the input must be free from electrical noise to avoid malfunction. It is best to keep short length from input terminal to control source. What is your application?
Audio Video Receiver with 12vdc trigger to switch on two separate power strips, each power strip has one power amp and a fan.
Do you aware of this power strip?
https://www.amazon.com/Iot-Relay-En...ocphy=1020086&hvtargid=pla-350415022545&psc=1
It can triggered by your AVR 12V trigger or 5V usb port.
https://www.amazon.com/Iot-Relay-En...ocphy=1020086&hvtargid=pla-350415022545&psc=1
It can triggered by your AVR 12V trigger or 5V usb port.
You can’t use this for speaker output. Bad distortion. You need to use back to back low RDson MOSFETs driven by an optically isolated gate driver.
Here is a circuit that Jhofland made for me and it works great. You can replace the MOSFETs here with whatever is best suited for your application. Look for low RDson (under 30mOhm) sufficient voltage Vgs. The comparator here will trip once it detects DC on the speaker in exceeding about 1v for more than 100ms.
You want to switch full sine wave mains?
Use a contactor, 3 pole, use 2 in parallel for line and one for neutral.
3 and 4 pole are easier to find.
You get those in 12V coil, or use SSR to switch mains contactor with 220V coil.
Then distortion will not be an issue.
Operative life is usually 1 million cycles, use a higher than needed rating to get good contact life, arcing at make / break is the main issue with those. Higher rating means less arcing issues.
Buy a good brand.
Use a contactor, 3 pole, use 2 in parallel for line and one for neutral.
3 and 4 pole are easier to find.
You get those in 12V coil, or use SSR to switch mains contactor with 220V coil.
Then distortion will not be an issue.
Operative life is usually 1 million cycles, use a higher than needed rating to get good contact life, arcing at make / break is the main issue with those. Higher rating means less arcing issues.
Buy a good brand.
I think we are mixing up two things:
Switching 220 V mains. The crossover distortion caused by triac voltage drop is no big deal in this case.
Switching loudspeaker signals. The crossover distortion caused by triac voltage drop is unacceptable in this case.
Switching 220 V mains. The crossover distortion caused by triac voltage drop is no big deal in this case.
Switching loudspeaker signals. The crossover distortion caused by triac voltage drop is unacceptable in this case.