voltage conversion

Hello Everyone, I am really new to electronics and I am struggling to figure out how I would be able to use my GreenWorks 40 volt 4 amp hour battery on a 48 volt 1000 watt electric bike conversion kit. I have looked for a step up converter from 40volts to 48volts but I was only able to find one...

Hi, I am trying to replace a battery powered circuit with a AC to DC adaptor circuit. I have a 5V adaptor but the device requirement is 1.5V. So, what is best way to reduce this voltage? Is using a resistor good enough? If so can you help me in understanding how to choose the value of resistor...