2 ms·
Others have described why 400 Hz is useful. But I'll mention that this frequency is very inconvenient for using the box on the ground. Fortunately CuriousMarc h
by kens 4y ago
Others have described why 400 Hz is useful. But I'll mention that this frequency is very inconvenient for using the box on the ground. Fortunately CuriousMarc had some vintage HP boxes that we could use. We ended up hooking up an HP 3310A function generator to an HP 6824A DC power supply amplifier to produce the power for the indicator.
- raverbashing 4y agoAh good. I was going to ask that question (does anyone has a 400Hz AC power supply lying around? :) - well I guess the manufacturers have but not many more people)