Well you are very close to the typical value of LED operating current (0.5m=
A). You could try to increase this (by lowering the 750R) & see what happen=
s. Does it work OK with a resistive load? (Like a lamp or even an LED with =
series resistor.)

You don't say exactly how its not working. From what you have written I int=
erpret that pin 5 is connected to +12V, one wire from the solenoid is conne=
cted to pins 4&6 and (though you don't say this explicitly) the other end o=
f the solenoid is connected to 0V. If that is indeed the case, then I'd exp=
ect the internal diodes to keep the solenoid powered regardless of what you=
 do at the input.

If that's what you are doing, then you could try connecting one end of the =
solenoid to +12V, the other end to pin 5 & pins 4 & 6 to ground. You might =
need to then wire a diode across the solenoid with the cathode to +12V so t=
hat reverse emf does not do any harm.

Joe

-----Original Message-----
From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of=
 alan smith
Sent: 10 January 2012 14:35
To: Microcontroller discussion list - Public.
Subject: [EE] problem with SSR

I'm not sure whats wrong..most likely its how I wired it up

Panasonic AQV252=A0 http://search.digikey.com/us/en/products/AQV252G/255-17=
91-5-ND/571631

5V system, using a 750ohm resistor to drive the LED in it, and I have verif=
ied the signal is driving on and off

I'm switching 12VDC @1.2A inductive load (solenoid)


pins 4/6 are output?=A0 pin 5 is +12V?

Or did I misinterpret the datasheet?

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