Hello Everyone,
Just recently I've designed and built my own power supply using the LM338 voltage regulator. I find it to be satisfactory; providing a adjustable voltage range from 1.2V to roughly 29.8V. The output ripple ranges from -60dB to -54dB (1mV to 2mV) when the voltage is within 1.2V to 29V. However, if I go over 29V, I receive a noisy saw-tooth wave whose peak reaches 50mV (-26dB). Clearly, the operation is best suited from 1.2V to 29V and no farther. For more information in addition to some pictures, please visit this site:
http://electrobird.net/Analog Projects/Variable PSU.html
I thank all of you for your contributions to my power supply, It works like a charm. I've already used it to power several other projects of mine.
Thanks,
Austin
Just recently I've designed and built my own power supply using the LM338 voltage regulator. I find it to be satisfactory; providing a adjustable voltage range from 1.2V to roughly 29.8V. The output ripple ranges from -60dB to -54dB (1mV to 2mV) when the voltage is within 1.2V to 29V. However, if I go over 29V, I receive a noisy saw-tooth wave whose peak reaches 50mV (-26dB). Clearly, the operation is best suited from 1.2V to 29V and no farther. For more information in addition to some pictures, please visit this site:
http://electrobird.net/Analog Projects/Variable PSU.html
I thank all of you for your contributions to my power supply, It works like a charm. I've already used it to power several other projects of mine.
Thanks,
Austin