9 more posts in this thread. [Missing image file: ]
Hi, DIY. I want some advice and help. Long ago I built a Power supply (with lm317, 2n3055 and shit) and it works flawlessly. The only problem now is that I want to test some RF circuit I built. The RF circuit is OK. It works without any noise on the battery, but on my power power supply it is noisy as hell.
The pic attached is the RF circuit (ugly I must say. I built it 4 years ago when I was learning to build circuits on boards). It is a VHF receiver for amateur radio.
If anyone knows a good filter for my case, I will be verry happy to implement it on my power supply.