Moderator: Queue Moderator
kv6o wrote:Can anyone point me to a schematic for the TPN1154A power supply? I have one here that puts out 15V+ with no load, and drops to 1V with a small load. Unregulated side looks good at 22V+ steady. I pulled the pass transistors (one is shorted, will replace pair) but the problem still exists even with the bad pass transistor removed. The regulation section is zener based, no LM723... thinking of just replacing with a 723! No crowbar either...
Users browsing this forum: Bing [Bot], Google [Bot] and 2 guests