I have make this circuit in circuit wizard
In this circuit a 240/12 V(india 50 Hz AC supply) transformer is used, in this circuit a relay turn ON a MOSFET and mosfet turn ON the relay no.2 which make turn on a 240 V 10 W light bulb.

But I have very elementary knowledge of electronics
When I simulate this circuit in circuit wizard software with explosion on most of them components got damaged.

Please suggest some solutions or mistakes in this circuit.



I have to make a circuit for training purposes of unschooled electricians.They have to work on live 440V line(with rubber gloves) in a electricity distribution company without interrupting the consumer supply.So I am trying to make some circuit when there is a short circuit in electrical network while working.It give a indication or sound or both.Please help me to build it.
I have done electrical diploma.just giving idea! For my understanding level......

 

Hello there,

Sometimes it helps to post a more standard schematic drawing rather than some special effects version.
Here is an attempt to convert that image to a more standard version, although it's still not as nice as we like to see. This might help get you more replies that might help you with the problem. You can edit this drawing to make it better too and that might also help.

If components get damaged it is usually because they are driven out of spec such as a voltage too high, a current too high, or reverse polarity, etc. You could check for those conditions.

 

With a 12V RMS transformer, the peak secondary voltage will be nearly 17V. 1.4V of that will lost in the forward voltage of the diodes in the bridge, leaving 15.6V. You have a 13V zener diode connected across that so it will draw a LOT of current and won't last long.

If both SW3 and SW4 are closed at the same time this places a short circuit across the rectifier output so again something is going to die; fuse, transformer, rectifier, or switches.

Relay 1 doesn't add much to the function of SW3 so you can eliminate that relay and add a resistor, perhaps 330Ω (the green box in the diagram below). This also fixes the short circuit problem described above.

SW4 shorts C1 which may be charged to 12V. This will result in a large peak current and will probably damage SW4 contacts fairly soon. This can be fixed by adding a resistor, again perhaps 330Ω in series with SW4.

[EDIT] Diagram now added!