aieta@ils.nwu.edu (Michael Aieta) (12/04/90)
Does anyone have any suggestion as to how I might use a set of old meters which are labeled Microamperes to simply move back and forth like VU meters by applying an audio signal to them somehow? They say direct current on them, have two big posts marked + and -, the - has a resistor tied to the rack mount chassis, and the needles point straight up at 0 and are marked to 200 above and below. Assuming my audio signal coming out of a mixer is a signal between +- 1V or 5V between the two leads, do I just need a 10K Ohm Resistor between one lead of my audio signal and the meter. Does the meter go in parallel with the resistor? In series? I don't care too much about measurement accuracy, just some peak to peak movement. Michael Aieta - aieta@ils.nwu.edu The Institute for the Learning Sciences Northwestern University Evanston, IL