February 10, 2018
Smoky aka L'il Toaster
This idea has been kicking around ever since the day I retired. December 31, 2012 was my final day and I was boxing up my personal stuff at the radar site. Along with the usual stuff was an old toaster oven that had belonged to my wife when I met her. In fact, it was her only household appliance. We used it daily in our house from the mid '70s until the mid '90s. Then the thermostat and door solenoid quit working. It would still make toast but you had to keep an eye on it because it would not shut off or open the door. So Carol upgraded and rather than trash this one, I took it to work. We used it regularly until I retired.
Over the years we would occasionally get side tracked or just forget that the toaster was cooking. One guy was particularly forgetful. We made a lot of charcoal. And several times we set off the fire alarm so we would have to get busy clearing the smoke enough to silence the siren. Meanwhile, the alarm was also monitored by Houston ARTCC. Thinking there may not be anyone in the building, they would notify the local fire department who would respond. Then we had to do some fast talking to get out of trouble! So, the little toaster became known as "Smoky".
Just thought I'd share that little story. Anyhow, back to the project. As I was putting Smoky in my truck on my last day at work, it just felt like a little SE amp. I knew it would never be used to set off fire alarms again so I started thinking about how to stuff an amp into the toaster. Not long after, I forgot about it... Until this past summer when I ran across it while clearing junk. I put it on the bench and started gutting it. It's amazing how complicated these little things are! And there is definitely a correct way to assemble/disassemble the unit! It took a few days to get it gutted enough to put a tiny amp chassis in it and still leave the door latch operational. But I finally did it. Then I set it aside waiting for cooler weather.
In January I picked up a cheap R2R electronics chassis (possibly Roberts?) And
started experimenting to see if the iron would actually fit in the toaster. It
did! So, with a lot of help from Hoffman's forum I finally decided on which
simple amp circuit to build. Jojokeo's Tiny Giant was a good match for this
project, so I adapted his circuit for a 6AQ5 output tube and started rolling...
This was the $12.50 donor from eBay. All I really used from this was the PT, OT, fuse holder, and hum pot.
Now for some fun...
Thanks for all the ideas I got from Hoffman's forum for this progect. Here's the schematic and point to point layout... smoky.pdf (177KB)