My Antonn project is having a power problem which I hope someone can help me with. I am supplying the controls with 12vdc and 5vdc from an old computer power supply. (The 5vdc runs the Io Tiny and servos which works fine.)( 12vdc runs a remote controller board.) I have two more power requirements. I require 7.2 vdc and 3.8 - 4.0 vdc power. The 7.2 vdc supplies a Scary Terry Audio Board and the current shouldn't exceed about 500 ma. The other device uses 3.8 to 4.0 vdc at about 150ma. There was no data on the smaller device, so I need to guess. (origionally ran off of a LiPo battery.)
I purchased a DC to DC converter able to supply the correct voltages and currents from the 12vdc and 5vdc supply I have available. I wired up the converters, set the proper voltages, but the converter fails to work with either device. I assume the converter supplies a type of PWM DC power. The units seem unable to tolerate the pulsing.
I have a limited electronic knowledge. I need to figure out how to build two regulated supplies, one able to supply 7.2 vdc from 12 vdc and the other 4 vdc from a 5 volt supply. Can anyone help?