Recent content by pmk0024

Working on talking my supervisor into letting me use a Ni-Cad battery, at the least. Biasing transistors is my best (as far as the project goes) choice, but I like the LM3914 idea. Mechanical displays aren't really an option, as we are going for "eye-candy" to entice pre-collegiates into...

Solution: Boost switcher...

And, how can I bias a transistor with a another power supply? The point of this circuit is to demonstrate how one can power a circuit with only wind power. No other batteries.

I figured I'd run into problems due to such low voltage with transistors (I assume you mean BJT's)

Voltage "guage" type of circuit Hi all, I have a windmill gearbox, connected to a generator. At the lowest speed, the generator outputs ~ 100 mV. At the highest practical speed, it generates ~2.8 V. I'm trying to make a graphical display that is proportional to the output voltage of the...