Review on 🔌 Ximico LM317 DC/AC Converter: 4V-30V Input, 1.5V-27V Output, 1A – Advanced Power Transformations by Adam Cummings

Seems like a nice little regulator board at a great price. Note that "normal" LM317 circuits use electrolyte up to 2200uF at the DC input, not 470uF as it seems. You may want to replace the electrolyte with a larger capacity. With a heatsink, the LM317 circuit must be able to handle up to about 1.5 amps and possibly more, and the LM317 regulator will protect itself by shutting down if it gets too hot due to excessive current. charges. You simply add a suitable transformer or even a DC input that essentially bypasses the bridge rectifier block and set up a regulated output. The voltage of the transformer you use will vary, as these LM317 regulators usually don't set the whole range at once, but rather the output voltage range from 5 to 8, 8 to 12, 10 to 15 and so on. If you expect an output range of 5 to 9 VDC, use a 12 VAC transformer. A 9 to 13V DC output will most likely use a 15V AC transformer etc. One of the main advantages is that the voltage adjustment potentiometer has several turns, so you can precisely set the required output voltage, e.g. B. 10.0 . or 8.4 volts instead of trying to use a one turn potentiometer for fine tuning. Another plus is that the LM317 is an excellent hum/noise canceller and the DC output is very clean, hum free and very finely regulated.