Nov 20, 2024 · Here's the LTspice sim of a simple unregulated charger with a unregulated output voltage of 15.3V open circuit, and an internal resistance of 0.35Ω to limit the charge current, …

Jun 19, 2022 · How would you modify a linear 15VDC 30A unregulated supply into regulated 14VDC 30A ? That would require about 93% efficiency and you're not likely to get there. What …

Feb 14, 2012 · I been doing some extensive reading, understanding how the unregulated power supply works and what are its inherent draw backs. I have come across so many different …

Jan 28, 2016 · +25V at 2A unregulated -25V at 2A unregulated What I need for output is +15 and - 15 Here is the schematic I came up with for both positive and negative buck converters. I'm …

May 7, 2008 · I have a faulty Sears Diehard Battery charger Mod. # 200713101 and cannot troubleshoot it without a schematic. I have been in contact with the customer service dept. at …

Oct 10, 2020 · The transformer appears to be OK for charging your battery, but you need to limit the current or you run the risk of damaging both the battery and the transformer if you use it to …

Feb 14, 2025 · Preamp power supply is a standard split supply +/-15 V, using LM317 and LM337 regulators (for their better accuracy and stability vs. 7815 and 7915 regulators). FWIW, …

Nov 25, 2025 · Hello all, I continued the schematic for my project, which a power supply unit, 24V 4A. These are the stages i have designed: Common Mode Emi filter ( i know its not needed, …

May 5, 2009 · Working on a 24v unregulated power supply, I dug out a transformer from a broken solder station. The transformer is 115 60hz on the primary and 0-12-26 on the secondaries. …

Jan 13, 2025 · I realize shorting an "unregulated" source like a battery with foil would be an overheating/fire risk as there would be essentially no current limit (other than the limited …