Charlotte 猫 Awoo Fide @confusedcharlot@awoo.space

here it is after it's warmed up

anyway the ripple at the outputs is too small for the simulator scope, but my guess is that it's about 100nvac at each load.

My wiring is probably noisier than that.

It's a bit overbuilt because I decided to add a regulator circuit to my already built filter section.

Anyway, there is 670VAC between the plates of the full wave rectifier, a 12x4 tube, and then a stack of 5% zener diodes to provide a reference voltage of up to 380V. The output of the rectifier will never get that high, so the regulator mostly smoothes things out at whatever the rectifier tops out at.

I don't need all the large caps in the filter section, but it's already built and paid for.

Since my power transformer fried*,
I've had some time to think about how I want the power supply to work. This is what I came up with.

*probably because it was unfused. the primary melted, but everything on the secondaries is still fine?

haven't had the emotional boost of participating in a thread in a very long time. reminds me of when the internet sucked less.

this transformer will bother no one anymore (should i try to make a new one out of it?)

also 330-0-330 is the limit point of "baby got back" measurements

Transformers are expensive, y'all

thinks about replacing a 1μf bypass cap with a 470nf just so it'll actually fit on this circuit board

dc test went well. now i just need to rewire the high voltage power supply to use the new filter caps, install the board, and wire in the four large film cap (two bypass caps and two coupling caps).

i wish had a better setup to test ac. i wonder if i could get away with using a phone's earphone jack as a waveform source.

line amplifier ready for dc testing. it's... a bit of a mess tbh, but its layout was the best i could think given the position of busses on the board.

anyway it still needs two sets of largish caps, which will be wired off board

My repurposing of this circuit board is in danger of turning into a rat's nest

cw business casual