Hello All,
I was hoping someone could check me on this to make sure I did this the right way before I spinning a board. Normally I would do a DC-DC module that gives me a dual supply but I am trying to get the cost down on this build.
Thank you all.
(https://farm8.staticflickr.com/7544/15276053303_8489e014fe.jpg) (https://flic.kr/p/pgTLrn)
You do not want C6. (C7 would filter the crap off the supply, but C6 puts half of it back in.) 10 cents saved.
Put some resistance (~~50 Ohms) between the power jack and C3. This gives C3 some "play" to work against, and in a reverse-supply accident it just might smoke before the chips and caps, faster repair.
If U1b pin 5 wants to go to Bias, shouldn't R12 RV2 also go to Bias?
Your output has (or should have) half supply voltage on it. It is customary and polite to have an output cap. This and the input cap may lead to additional bleed resistors. (10 cents added, sorry.)
Have you built this? It is not clear to me what it is supposed to "be" (I am tired). Looks like a hypersonic oscillator, or maybe almost-oscillator. Or a 1-stage phase shifter?
Breadboards usually tell Truth better than a popular vote.
Your input connector pin 1 should go to ground, not bias.