Hi, I have a circuit for controlling very low currents and want it to be able to switch fairly heavy currents (about 20a max). Is there a simple circuit that would allow me to "amplify" the output of the circuit? The data sheet states that output will be 4.5V. Output current on the IOLines is a max of 20mA so what I need to do is either find a relay that draws a maximum of 20mA capable of switching 20a DC, or boost the output enough to power a larger relay. Any ideas?