PIC Triac driver

[Mosaic]

Hi,
I need to drive a 120V 2A load under PIC control...
Can anyone direct me to a suitable circuit?

The load is a magdrive pump.

thx

 

[theo92]

I think it will be better to use a relay instead of triac. There's always a chance of destruction of the triac due to excessive back emf when you're driving such inductive loads. Isolation between the ac and the uC circuit is also another issue. I'd use a bjt/mosfet to drive a relay, and then the pump with it.

 

[theo92]

Or see this, please note how they used an optical isolator to isolate the two circuits, otherwise the uC may reset strangely due to noise.

www.bristolwatch.com/arduino/arduino_power_control.htm

 

[wkrug]

Why You don't use a Solid State Relay?

It has an LED as input, is galvanic isolated and some Types has a zero crossing switch to avoid distortion.
Like such one: https://www.reichelt.de/Solid-State...8AAAIAAFG0hqQec9b9b32976e7be24f4c50268e256ee1
or that:
https://www.reichelt.de/Solid-State...8AAAIAAFG0hqQec9b9b32976e7be24f4c50268e256ee1

 

[dr pepper]

If your not wanting to do phase angle power control then the moc3040 has a built in zero crossing synchronizer, this will reduce switching noise to next to nothing.

 

[Mosaic]

ok thx, I note this pdf:
https://www.electro-tech-online.com/custompdfs/2012/09/82728.pdf
for the moc3031 which i have on hand.

I also have this TRIAC
https://www.electro-tech-online.com...N6349AG-ON-Semiconductor-datasheet-156428.pdf

I'm not familiar with reading the datasheets on these....is the driver output of the moc3031 able to drive the gate load of this 2N6349 power triac?