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  1. nickagian1

    efficient 12v to 5v regulator chip.

    Can I ask something about that? Does the output current of 3 amps (or 1.5 amps for LM117) depend on the input current or it is provided even if the input current is less?
  2. nickagian1

    Battery current

    Does anybody know how much current a 9V-battery can give? And what about 1.5V-batteries? Thanks!
  3. nickagian1

    Current Sink for LEDs

    Hi everybody! I want to design a project with some LEDs, something like a signboard and I need to use a current sink, which can drive up to approximately 500-600mA. I have thought of using a NPN transistor (for example 2N2222),  but I do not know what the exact circuit should look like. I have...
  4. nickagian1

    e-shop

    Thanks a lot slackjack! Actually I am looking for some LED`s (over 100) and I want to check what types I can find in the market and at what prices.
  5. nickagian1

    e-shop

    Does anybody has a suggestion for an online electronics-shop?
  6. nickagian1

    OrCAD Library file

    I guess that you should find the full edition and take aditionally library files from there. If you are still interested, send me an e-mail or pm and maybe I can send you some libraries to try if it works.
  7. nickagian1

    Single-ended CMOS Cascode OpAmp Design

    Yeap... I have to design a whole 2-stage CMOS OpAmp... and still haven`t find a solution.
  8. nickagian1

    MOSFET model in SPICE

    Yes!
  9. nickagian1

    MOSFET model in SPICE

    Ooops, yes, I have forgotten to write it...I use the 9.2 Release!
  10. nickagian1

    Single-ended CMOS Cascode OpAmp Design

    Can anybody help me with the following circuit? As you can see it is about a CMOS OpAmp, with cascode input stage. I want to find a way to bias M3,M4 (Vb) but until now I cannot manage it. Can anybody suggest me a solution for biasing and how to calculate it (I mean the W/L ratio of the MOSFETs...
  11. nickagian1

    MOSFET model in SPICE

    Hello everybody! I have to complete a design of an OpAmp using CMOS technology and the given model for the nMOS transistors is the following: .model Mn NMOS(LEVEL=2 LD=0.1e-6 VTO=0.77 KP=77e-6 GAMMA=0.35 PHI=0.76 CJ=0.31e-3 +CJSW=0.17e-9 CGSO=0.19e-9 CGDO=0.19e-9 CGBO=0.3e-9 NSUB=1.9e16...
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