On 7/12/2021 4:56 PM, Dave R wrote:
Maybe raise the Voltage to get same power on a given conductor? 5.5Vdc won't hurt anything
I've done some evaluation of R-Pi power supplies and concluded they're basically all crap ;-)?? The white "official" ones still allow undervoltage errors to occur but they do tend to be better because they have integral cables (possibly made with larger gauge wire?) and mostly because they put out 5.3 to 5.5 volts without load, so once you factor in the voltage drop under peak load spikes the undervoltage detector is not triggered.??? It's difficult to make good measurements because most of the inline USB volt/current meters I've tried are pretty inaccurate.?? The best method is with a breakout that allows you to use a known good voltmeter.
My SDR webserver is running from a linear power supply for lower noise with power fed through 18ga wires to the GPIO pins.?? I measure the voltage at other GPIO pins and set it to exactly what I want and after doing so it will run for weeks without throttling.?? I realize this bypasses some of the protection circuitry but am OK with that.?? I need to add a UPS to avoid power sags during electrical storms as I'm in a rural area with poor power quality.
73, Bob W9RAN
