[need a sound device for my circuit]

    I have used the insides of a recordable greeting card before.  I have seen the almost the same circuits in a recordable photo frame and a memo minder.  I think Radio Shack sell it under Model: 276-1323. 

["Power?" Inverter]

      I have a cheap meter so I would guess it is not true R.M.S.  The 60 watt bulb was not at full brightness, I was using a Radio Shack transformer part number  273-1512 it shows rated at only 3 amps on the low side.  The only parts that heated up was R1 and R2,  the transistors just got a bit warm but I had heatsinks on them.  I tried a 100w bulb and then I could hear the freq. go way and up and the circuit stopped working.  I checked and one of the transistors is now bad. I used 69-206s for Q1 and Q2 I have a bunch of them that I got somewhere.  I have a couple of old Microwaves and I am going to look into a better transformer. 

["Power?" Inverter]

      I have built this circuit using a radio shack transformer and it worked so I did a little testing.  I was using a full charged car battery and I measured 109 volts with no load and I tested it with a 60 watt lightbulb and the voltage dropped to about 105 volts.  I didn't have a way to messure the frequency but it sounded close to 60 hertz.