Shuriken Posted June 17, 2010 Report Share Posted June 17, 2010 As my MB6582 is nearing completion, i need to start building a decent PSU. At first i thought about using Northernligthx design but there are some flaws. I spoke to him and he told me his design isn't working well at the moment. So i decided to make my own design taking his as inspiration. I want to use a 2 x 12V Transformer: On another electronics forum i was warned about latch-up. So i want to change the design and add a latchup protection. It's supposed to be done by adding some diodes. But i am not sure how. So i would be helped if anybody could tell me how. Quote Link to comment Share on other sites More sharing options...
julienvoirin Posted August 1, 2010 Report Share Posted August 1, 2010 it consists to have diode (1n400x) at the output of the 78xx to avoid reverse voltage http://sdiy.de/de/projects/miniPSU.html basically the same idea Quote Link to comment Share on other sites More sharing options...
Shuriken Posted August 2, 2010 Author Report Share Posted August 2, 2010 Thanks, i actually figured it out when i was looking at the schematics for a Roland Juno 60. Roland also used it in their PSU design. Quote Link to comment Share on other sites More sharing options...
strophlex Posted October 1, 2010 Report Share Posted October 1, 2010 Thanks, i actually figured it out when i was looking at the schematics for a Roland Juno 60. Roland also used it in their PSU design. Did you get this working? What components did you use in the end? Cap sizes, transformer power, rectifiers and regulators? Quote Link to comment Share on other sites More sharing options...
Shuriken Posted October 2, 2010 Author Report Share Posted October 2, 2010 (edited) No, i haven't build it. I decided against it actually. The two big resistors are basically giving off 12W of heat under full use. Since i am not going to be using 6581 SIDS, i wont need 12 Volts. So i decided i might as well use a C64-II PSU. I did almost do it though but then the resistor were out of stock at Reichelt. Edited October 2, 2010 by Shuriken Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.