Triac optocoupler problem

[Sand Groper]

Hi All.
I am switching a small AC solenoid for a door chime with a triac optocoupler. The AC voltage is 14v. The obvious problem is it turns on but won't turn off.
I added a snubber circuit
RES = 820 ohm
cap = .01 uf
It had no effect. My question is should I try different resistance values or capacitor values or both. Any help would be greatly appreciated

 

[danadakk]

Post Schematic .......

 

[Sand Groper]

Hi
A very basic circuit

 

[KlausST]

Hi,

A very basic circuit

... and where is the triac?

Did you read the MOC´s datasheet? If not, then please do.

Klaus

 

[FvM]

MOC3021 can't handle more than 100 mA Irms continous current according to datasheet. Doubt that your solenoid keeps this rating.

Also snubber has too high impedance to have much effect.

 

[Sand Groper]

Thanks for your reply. I will add a triac even though the solenoid is very small.
I will then reduce the snubber impedance as per your advice

 

[D.A.(Tony)Stewart]

Thanks for your reply. I will add a triac even though the solenoid is very small.
I will then reduce the snubber impedance as per your advice

It is not the size, but the resistance and inductance that matters. Does it work well with a mechanical switch? It needs to be a least 4 Watts to have any force. 100 mA*12V is only 1.2VA. (ac)
Why not a DC solenoid?

Which one? https://www.alibaba.com/showroom/12v-solenoid-lock.html

 

[KlausST]

It is not the size, but the resistance and inductance that matters.

Every solenoid is electrically specified.

For an AC solenoid I expect
* operating voltage (range), at least a maximum limit
* operating frequency (range)
* operating current, at least a maximum limit

Klaus