negative

I need help designing a circuit that would emulate the signal generated by a magneto's primary. I need this to repair and verify the functionality of generator controls that use this signal to measure the engine's RPM. The signal is a negative pulse in the order of -300 vdc which is displayed...

Hi, For a project I am working on I need to generate a negative voltage from a single positive one. More precisely, I need -18V from +18V with at least 1A. For the first prototype, I am using an LT1054 (http://www.ti.com/lit/ds/symlink/lt1054.pdf) powered @+15V and everithing works as...