This circuit is a small +5V power supply, which is useful when experimenting with digital electronics. Small inexpensive wall transformers with variable output voltage are available from any ...

The present IP is a voltage regulator to generate 2.5v power for on chip circuits. Normally, its power supply is 4.5v~5.5v. The generated power voltag ...

If you’re looking for a neat DIY project this weekend, then this DIY 9V Battery USB charger could be a fun gadget to create. With only a few components, including a 9V battery, a female USB port from ...