Have you ever needed to power a 12-volt relay in a circuit but only had 6 or 9 volts available? This simple circuit will solve that problem. It allows 12-volt relays to be operated from 6 or 9 volts, ...

Simple Circuit Diagram is a collection of completely free electronic circuit schematic diagrams. For each diagram, they explain the use of the circuit as well as provide in-depth explanations of all ...