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Recent content by lotus21

  1. lotus21

    Basic understanding

    Cheers Im looking at a MULTICOMP - MCF/Y9615F transformer. It says: Secondary Voltages:2 x 15V Does that mean that i can get 1 x 30V ? or is that a no-go ?
  2. lotus21

    How to hold a specific voltage

    Great I am learning already :o) And ATX PSU's are sloppy at best. So first things first, keeping the transformer within limits, and making sure that the voltage regulator input is at a sufficient level, then I can make a fixed output on my PSU at 12V and 15V. Sorry if I asking something i...
  3. lotus21

    How to hold a specific voltage

    Thanks One thing Im wondering about, is the capacitors, calculating the values for the caps using to smooth out the full wave diode bridge is no problem. But how do I estimate 'buffer' capacitors like the ones you mentioned on the input/output leg on the regulator? How do you get those values...
  4. lotus21

    How to hold a specific voltage

    1) I hope not the voltage out of the transformer would depend on the load? I do believe the voltage of lets say a: (24V-0-24V) transformer might be (26V-0-26V) without load, but with load it 'should' hold at (24V-0-24V) Ofcourse I will keep below the specifications on the transformer. 2)...
  5. lotus21

    How to hold a specific voltage

    I fail to see how Line/load regulation should be an issue here because of 2 reasons: 1 I would expect the input voltage to be relatively stable, if im wrong please tell me why im wrong :o) 2 If i get a good voltage regulator, and taken that i dont use it to power a brushless motor demanding too...
  6. lotus21

    How to hold a specific voltage

    I want a psu with fixed 12V, 15V and 1 or 2 regulated outputs in the scale 2-30V But you may link to your cheaper product. I have access to most basic components on my school, so I would probably only need a transformer and a box/casing
  7. lotus21

    How to hold a specific voltage

    But i do have detailed knowledge of electronics, just mostly on a theoretical level. A bench PSU in real life, takes a lot of practical experience, which I lag, so I ask here :o) And i would think that it would be cheaper to build one yourself, a PSU doesnt need many parts afterall. Thanks for...
  8. lotus21

    How to hold a specific voltage

    Hi I want to make a bench supply with fixed voltage of perhaps 12VDC and 15VDC. Doing so, I am thinking about having a high enough main supply of like 13-14V or 30V?, and then using either a zener diode or voltage regulator to create the correct Vout on the bench supply. Are there any reasons...
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