GoGreenElectricsLTD
Member
@ronv
? we must be using different datasheets
View attachment 71936
@GoGreen
Can you define 'negligible'? The IC can put out only ~3mA at close to 5V, so a buffer stage might be needed? Or were you thinking to use the FET to drive the SSR?
OK, well I just measured the current flowing in the existing circuit controlling the SSR and I got 26mA, but thats is at 24v !. Although it doesnt need it I put the 150 Ohm resistor in there just as a saftey precaution. The SSR will switch on with anything over 5v.
I tried using the FET to drive the SSR once before and it didnt seem to work. I think it needs a load accross it to operate correctly ?.
Incidentaly its a Mager SSR, I am sure there is a data sheet somwhere ?.