I was able to "hack" a lm317/lm337 pcb to make it work with a simple zener regulated power supply as well as a simple capacitance multiplier power supply. Its actually not much of work due to similarities in their supplies. I have uploaded the sim results and articles on my site, these are a little large files and I suspect the server is a little slow, so a little bit of patience will help. I am still trying to figure out some ripple measurement system using soundcards and will post results once I have some actual measurements.
http://bluesmagicaudio.com/bma/articles.html
http://bluesmagicaudio.com/bma/articles.html
Some of the model and symbol files were missing from the simulation zip files. I have included these now, if someone wishes to try it, then please redownload the file and it should work fine now. There is a Readme file also. I tested with a fresh ltspice install and all three sims worked ok.
Nice work. How about the zener and cap multipliers supplies with a CRC filter?
Of course have you done a listening test with the different supplies?
keep up the good work.
Jam
Of course have you done a listening test with the different supplies?
keep up the good work.
Jam
it protects the BE junction of the darlington.
Next I will try to take some real measurements. I have heard an opamp based preamp powered by all three supplies, but not really tried finding out audible differences.
Next I will try to take some real measurements. I have heard an opamp based preamp powered by all three supplies, but not really tried finding out audible differences.
Last edited:
- Status
- Not open for further replies.