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Radio Wrangler · 8th Sep 2019, 4:53 pm

Be careful of HF decoupling of regs. Capacitors affect stability and some reg designs rely on the ESR of Al or Ta electrolytics to keep them stable. Some chips take off with low loss ceramic capacitors.

Check the datasheet very carefully.

David

8th Sep 2019, 4:53 pm	#31
Radio Wrangler Moderator Join Date: Mar 2012 Location: Fife, Scotland, UK. Posts: 22,904	Re: Defective/ fake LM317T Be careful of HF decoupling of regs. Capacitors affect stability and some reg designs rely on the ESR of Al or Ta electrolytics to keep them stable. Some chips take off with low loss ceramic capacitors. Check the datasheet very carefully. David __________________ Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done