That means no physical electrical connections ... and a 5 V Zener that supplies the IC and radio circuitry. This is a handy feature of the TPS circuit. Since the capacitor passes some current ...

An ultra-low power sensor operates using energy harvesting from various sources for efficient monitoring. The oscillator ...

Electrical circuits work by moving electrical energy from a supply, like a batter, to where it is needed. The electrical circuits in our homes use metal wires coated in plastic. The metal wires ...

These could be batteries, solar panels, or a power supply connected to the mains ... So it helps to think of an electrical circuit a bit like the central heating system in a house.