The circuit drawn pertains to a regular industrial UPS (Uninterruptible Power Supply), which shows how the batteries take control during an outage in electrical supply or variation beyond the normal ...

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 ...

Curious question: Would one be able to wire two power supplies in series ( like this one) to double the output voltage? Using the power supply in the link, you'd (theoretically) get 10VDC @ 1A and ...