Electronics > Beginners
Test jig for solid state relay
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dareswitch:
Hello All,

I'm very new to this forum and still working out my electronics skills in  designing.

Can some one please help me to build a circuit to test a Solid State Relay unit D1D40.

Have a circuit with  - SPDT switch and 4 LED (companied with ressitors)and then used 8 x 180Ohm Resistors at the load end of D1D40 relay which get very hot upon operation and i want to come up with a solution for this problem .

Please see  4 LED are used  for below purposes in my circuit-

 1st LED - Power ON indication
 2nd LED - to indicate whether the Relay is Active
 3rd LED - to indicate Fail open
 4th LED - to indicate FAIl Closed

BUt i need something simple but everything covered.
Kindly suggest

Thanks


soldar:
Much simpler and better to just connect an incandescent lightbulb as a load and drive the input with a suitable circuit and a switch.
dareswitch:
Thanks but we need a test Circuit to check the relay functionality as it is how it is meant to be
soldar:
How are you going to test a SS relay without connecting a real load? I can't see how that is practical.
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