Hi,
I have just cooked a few of my Allegros and while I think I will get by having a spare on hand would be nice. Have any of you found a supplier down here with a suitable chip? If not I will try to source a few from the states.
How I did it?
Lat year I made my own 595s and SSRs on strip board. For one of them I made them seperate and for some reason I mounted the current limitting resistors on the 595 and not in the SSR. I forgot this fact and this year recycled two of the SSRs and hooked them to the Grinch without limiting the current.
I knew I had a crook SSR but also "knew my old ones were fine because they worked last year" Big mistake...
I am now resurecting two of the 595s to replace the burnt out Allegro. Thank goodness for the change output channel facility! If I can't get them working tonight I am big trouble from the wife. Couldn't sleep last night with worry.
Jon
I have just cooked a few of my Allegros and while I think I will get by having a spare on hand would be nice. Have any of you found a supplier down here with a suitable chip? If not I will try to source a few from the states.
How I did it?
Lat year I made my own 595s and SSRs on strip board. For one of them I made them seperate and for some reason I mounted the current limitting resistors on the 595 and not in the SSR. I forgot this fact and this year recycled two of the SSRs and hooked them to the Grinch without limiting the current.
I knew I had a crook SSR but also "knew my old ones were fine because they worked last year" Big mistake...
I am now resurecting two of the 595s to replace the burnt out Allegro. Thank goodness for the change output channel facility! If I can't get them working tonight I am big trouble from the wife. Couldn't sleep last night with worry.
Jon