OK, I have a silly question but I'm sure so one can answer the question for me.
I'm trying to make a DC-DC comverter with an Input of 34VDC rated at 2 amps, and I'm thinking of bringing that down to 5VDC. My question is that would I only still have a maximum current of 2 amps or since my voltage went down will my current go up? I'm thinking of using an LM340 or somthing simular.
When You apply a dissipative regulator as LM340, the current of output equal to input. If the input voltage is 34V, output 5V, the difference 29V,multiple with 2A load = 58W dissipation (heat on LM340).
With switching regulator from 34V 2A input You can suck from output about 6A.