>> Bulbs have a lower than normal resistance when cold [...] >> Three or four 15 ohm resistors in parallel would probably make a >> better load for the -12V line. > Unfortunately I don't have enough of these to hand, and the local > shop (Maplin) does not have enough in stock.
:-( > But getting something in series to measure load is going to be really > awkward, [...] As in, you don't have any such thing to put in series, or you don't see a good way to get it in series? I've got a couple of 0R1 resistors which work nicely for that in conjunction with a voltmeter that can handle millivolt measurements; you might be able to get something similar. Mine are 10W, and, while they are designed for bolting to a heatsink, they can probably handle at least 2 or 3 watts, which means some 5-6 amps, in free air. (Though that then drops about half a volt, which can be a problem when you can't put it on the input side of the regulation.) /~\ The ASCII Mouse \ / Ribbon Campaign X Against HTML mo...@rodents-montreal.org / \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B
