7805 datasheet voltage regulator IC: Pinout and example circuits
Here is the 7805 5V voltage regulator datasheet the 7805 voltage regulator IC. They are designed to provide a constant 5V. Read more
Power supply
Ham radio power supply circuit with RFI elimination
Here is Ham radio power supply circuit using LM350T x4 in parallel for Amateur radio CB/RF/VHF. The output is 13.8V at 10A current. It is good circuit with PCB low noise RFI elimination. Read more
100w Inverter circuit 12V to 220V using Transistor
This is inverter 12V to 220V that 100W output using all BC557 PNP and 2N3055 transistors so easy to build and cheaper, we use 12V 10Ah and transformer 5A up. […] Read more
High Current 12V-13.8V at 30A,25A,20A,15A Power Supply
CAR Radio transmitters to use in home, need a ham radio power supply DC-12V or high current 13.8V power supply with enough power out of 5A – 30A. […] Read more
USB 5V to 1.5V/ 3V Step Down Converter Circuit
See USB 5V to 1.5V/3V Step Down Converter Circuit using LM317. With this, we can use MP3 players (requires only 1.5V AA battery) with USB(5V). Read more