0-30V 0-5A regulated variable power supply circuit
Do Not Make This circuit If You are not brave enough. Read more
Speaker protection circuit
It will prevent the speaker from too over high power output may speaker damaged it use transistor and relay cut off as safe. Read more
15 Filter circuits using electronic coil
I love to collect a lot of circuits. A filter circuit is important in Electronics. I will show you many ideas of noise hum, high-low frequency, and more. Some will smile it so easily and without a power supply. These are small circuits, so easy to apply, and try into your works. There are seven … Read more
LM317 with pass 2N3055 transistor circuit regulators
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. Read more
4 ideas of noise filter circuit
If you are looking for a noise filter circuit. I have 2 circuit ideas for you. They use a transistor and FET as main components. So, easy to make. Read more