How to make a solid state relay working at 48V DC & 220V

[seyyah]

solid state relay

How can we make a simple and reliable solid state relay which can work at 48VDC and 220VAC with a current rating of 1A

 

[FoxyRick]

Re: solid state relay

Use a triac - see these examples...


http://www.hut.fi/Misc/Electronics/circuits/semiconductor_relays.html
**broken link removed**
http://www.geocities.com/ido_bartana/SSR/circuit.html

Cheers,
FoxyRick.

 

[cesariv]

solid state relay

If you want to use DC voltage with TRIACs.

I suggest you to research for forced commutation.

This circuit allows you to turn off your TRIAC anytime.

 

[bhaskar1996]

Re: solid state relay

Try using optocoupler with the triac its easy.

 

[davorin]

Re: solid state relay

No..isn´t that easy!!!

Problem with mixing DC and AC is that all (i know of) DC SSR are MOSFET absed and all AC are SCR based...

The only one manufacturer I am aware of is Teledyne:

https://www.teledynerelays.com/selectionmatrix.asp


Maybe you want to use a bridge-rectifier in series to the load and inside a normal high-volatge MOS/Bipolar transistor?

 

[metal]

Re: solid state relay

Hello

Go for MOC3062, it has built in zero-crossing, and can directly drive a triac.

Regards