Push-button on/off switch using complementary MOSFETs.It’s taken from the excellent book The Art of Electronics [2], and like the CMOS version it draws no current when the switch is off, because both MOSFETs are in a non-conducting state.As before, to drive more than 100mA replace the p-channel MOSFET at the output with a power one, such as the NDP6020.
I’ve been putting together a little robot pictured on the right for the last few months. Nothing fancy but I’ve played around and wanted to have a circuit to with a pushbutton to turn it off and on. Here is a few circuits that may fill the bill.
Green Comet 45P will pass closest on February 11, 2017. You won’t see it with the eye alone. It’s not even an easy binocular target. But we’re beginning to see wonderful photos!
Source: Will you see Comet 45P at its closest? | EarthSky.org
