All Electronics Hobby Projects. You can build quickly them when have free times. Most cheap and easy to find parts.
Not suitable for beginners!
Good transistor audio amplifier circuit, at 40 watts OCL RMS using 2N3055+MJ2955 is easy to build,and very inexpensive. To use Power Supply +35V -35V 2A.
This is a 3A adjustable regulators using IC-LM350 that looks like LM317 Variable DC Power Supply, but high current higher 3A, adjust voltage 1.2V to 30V
This 50W OCL main amplifier circuit has high quality and economical,it is designed simple,easily created, electronics rookie.cheap when compared to other
LM317, 3A adjustable voltage regulator circuit diagram
Output: 1.2V to 20V, and 3V,6V,9V,12V
High quality, 3A adjustable voltage regulator. Using LM317 and 2N3055 so easy and cheap. Adjust voltage in steps 3V, 6V, 9V, 12V. And In fine, 1.25V to 20V.
This is a 0-60V, Dual Variable power supply circuit using LM317 and LM337 at 1.5A current so can builds to easy with PCB layout, adjustable voltage VR1,VR2 [...]
SEE! Many Power amplifier circuit diagram with PCB layout. So easy to builds. You can choose 0.5W to 1,200W. Using transistors, MOSFET, IC on a lot types