Thanks, John & Family for bringing this, the “new champ,” to Yankee Swap. It’s shown next to its predecessor (left).
This Apple router works, but it gets hot. Time to take it apart and find out why. If I can’t fix it, I can at least say I’ve seen inside and will earn the benefit of more knowledge. Plus, who knows what little parts I might find?
Here’s the shell of a burnt-out PA mixer. Of course, I desoldered the 40ish variable resistors, along with 1/4″ audio jacks and XLR inputs. Now, I’m devising a replacement panel and a whole new functionality.
Quick side note: look at my hat head. Holy shit. What a weirdo.
Speaking of bathing… I’d really like to come up with a horribly toxic fire hazard solder bath for these boards. I shall not throw them away yet, because there is still logic (i.e., ICs) to be harvested. These, by the way, are pellet stove timers running on PIC microcontrollers. I think I could learn to program those!
And lastly, look how nice this transistor tester looks as a “kit” inside the back of a former salinity tester. Note: that’s my USB 9V battery on the left.
I recently acquired this amp head. When I got it home, I decided to not bring it indoors – and boy am I glad. When I opened it up, the mouse who had been living inside jumped out and ran away. Incidentally, I hear he…
Testing capacitors today… Below I explain why.
I have procrastinated serious filter experiments for too long. Today, after a quick review of some basic concepts, I began to speculate about a variable filter module.
Defining the outer edges of a Band Pass filter makes enough sense – and leads me to the idea of a potentially chaotic (in a good way) variable array of components. What if I could, manually or otherwise, shift my upper and lower limits?
Plus, haven’t I been looking for an excuse for ages to use these salvaged variable capacitors? The answer is yes.
Thus, the time has come to get systematic about it. Today, I took measurements of the capacitance of several old pieces. It looks like I have everything I need to build an interesting audio filter experiment box.
For a little over a year, I’ve been going pretty steadily at electronic devices: trying to understand them, create them, and deconstruct them. I now know so much more than when I started, though I have exponentially more yet to comprehend. Here’s a selective review of the things I’ve been doing. It’s fun to look back before continuing forward.