Are there any low end limits to how low of a constant current you can make with a transistor ?
For a simple circuit like the following, is there a lower limit to the achievable constant current ? Would 100uA-1mA be asking too much ?
I'm not that concerned with (yet) about the temperature effects of the current (that might be a seperate question).
I've sim'd it, and everything appears to be in order, but are there any practical limits that a simulation will exclude ?