"William Sommerwerck" wrote in
message ...
(famous last words, "what does this post
have to do with electronics repair"...)

A lot... if the circuit damages something.

About 50 years ago, MAD ran a parody titled "Beatnik
Magazine". One of its
contents was a photo of a middle-class family, watching TV
in the living
room, with the caption "What's wrong with this picture?"
The answer was
"Like, man, /everything/ is wrong with this picture."

That pretty applies to the circuit. I see what you're
trying to do, but
you're going to get two exploded caps (at least), and
possibly a small fire.

Take the other poster's advice. Buy a second detector and
plug a 120V alarm
of some sort where the lamp goes. If the one you have an
handle enough
current, you could always stick a plug adapter in the lamp
socket.

Actually the circuit is not all that unworkable. Some
suggestions and comments:

1) Diode D1 is backwards;
2) You need a resistor in series with D1 to limit in-rush
current;
3) There is no discharge path for C1. A high value resistor
across C2 can fix that;
4) What do expect to place across the terminals labeled 24
VDC? The voltage there may have no relation to 24 volts.

Further suggestions contingent upon knowing what is at the
24 VDC connection.

David