I got one of these 3.3V DC-DC boost converter modules:
https://www.amazon.com/gp/product/B07TJTGPJC/
With a simple LED/resistor load I see about 20mV noise with some 50mV spikes once in a while. I tried different caps on the output, but that only increased the noise. Huh? I can't get the ripple down at all? I was hoping to use this with a small HF transceiver.
https://www.amazon.com/gp/product/B07TJTGPJC/
With a simple LED/resistor load I see about 20mV noise with some 50mV spikes once in a while. I tried different caps on the output, but that only increased the noise. Huh? I can't get the ripple down at all? I was hoping to use this with a small HF transceiver.