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Member Since: October 18, 2009

Country: United States

  • Can you make a current "multiplying" mirror with discrete transistors? In school, they always talked about setting up the width by length (W/L) ratio of the transistors to multiply the current. I can't do that in a discrete design, and I'm trying to figure out how that might be done. For example, say I want a reference current of 255 uA to become ~50 mA. That's a multiplication factor of ~196. I don't want to use the common op amp - transistor circuit for this nor multiple transistors in parallel. Is it even possible?

  • Where would I get a laser that could be modulated? I'm looking for 300 or above kHz.

  • Ok,
    So let me get this straight, there are a bunch of USB Scopes out there. It seems that people here want native Linux/Mac support.
    Is Linux or Mac support more important? I would probably be aiming more towards expecting that Linux support would be the higher-requested item. However, if Linux support was present, Mac support shouldn't be hard to do (theoretically)?
    What is the problem? Is it something to do with USB drivers, or the underlying software?

  • A few questions:
    - Can this be linearly amplitude modulated? Up to what frequency?
    - Can we control the output power? Looks like there is some kind of pot on board.

No public wish lists :(