General > General Technical Chat
What was your first circuit? Do you still remember it?
Wallace Gasiewicz:
First tried to breadboard a Receiver with number 27 tubes, Something started on fire,
Then built a AF amp from the back of the RCA tube book, It worked OK but I was never able to get rid of the hum. I think I used old filter caps that were not too good.
It was a push pull with power pentodes. I used transformers from old radios.
eti:
Battery, bulb, in school.
basinstreetdesign:
First circuit? Yep, I was 12 in 1962 and found some books at the library on electronics and HAD to try SOMETHING out. I can still see the jet of blue-orange flame that shot out of a 5 inch radio speaker voice coil as it answered the age-old question: “What happens if you plug it into the wall?”. ;D
First not-so-simple circuit? I built a simple one-tube amplifier from parts hacked out of an old B&W TV. I had inadvertently wired the power filter cap backwards. This blew the fuse. When Mom replaced the fuse we heard a loud bang. I discovered I had a roomful of acrid smoke and it sent the can out of my bedroom, around 3 corners and down twenty feet of corridor to bounce off the front door of our apartment. This raised eyebrows. The fact that it also managed to blow a house fuse got my soldering grounded for a week, to boot. The parents weren’t pleased. :palm:
jhalar:
Around when I was 13 my first circuit was "built" using a Braun Lectron set which was abandoned when a Tandy 100 in 1 appeared one Christmas.
Circlotron:
I was 6 or 7 (mid 1960s) when I got a Denshi Block electronics set, same as in the pic. Mine was a bit earlier than the one in the pic because mine said across the top "let's open an (sic) door to electronics!!" Typical English grammar of some Japanese products of that era. At a similar time next door gave me a commercially made crystal set and a pair of headphones. Later while in grade 4 I took the headphones, some batteries, a good length of wire and a carbon microphone to school for show-and-tell and wowed the whole class. Edit - last pic shows my version.
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