The circuit uses two general-purpose npn transistors, Ql and Q2, and a special hand-wound, dual-coil probe ferrets out the magnetism. Ql and its associated components form a simple VLF oscillator circuit, with LI, C2, and C3 setting the frequency. The VLF signal received by the pickup coil, L2, is passed through C5 and rectified by diodes Dl and D2.

A relay is essentially an electrically operated switch it has a coil that uses magnetism to close the contacts on the switch. In automotive terms 12V running through the coil will allow 12V to run through the switch contacts. So why is a relay useful You can use a low-power source to energise the coil to switch power to a high-power device (lik

First you need a mechanical power source like a turbine(powered by water falling), wind turbine, gas turbine or steam turbine. A shaft from one of these devices is connected to a generator to make power. Dynamos and generators work using the wild complex phenomena of electromagnetism. Understanding the behavior of electromagnetism, its fields and

The Brusless DC motor of permanent magnetism is a new electrical machinery with new principle, innovative technology, new method at present, it is by the Brusless DC motor body of permanent magnetism BLDCM, trochanter position transducer RPS And control device CU Three parts of constituent electromechanics` integrated systems. This electrical mac

This circuit creates a stunning display of the "magic" of magnetism by suspending a small metal object in mid air. Using an electromagnet, photo sensor and closed loop control, small and light metal objects can be floated just underneath the magnet, enclosed in a decorative arch. "No strings" are easily demonstrated by the ability to pick the meta

Had noticed balls getting stuck in the ball trough, not loading into an upkicker or not sitting directly on trough ball microswitches/optos, causing the machine to think a ball was missing. My first thoughts were that the ball trough itself had become pitted . I also doubted the angle of the ball trough for a moment, as a slight adjustment allowed the balls to roll down normally. It then became apparent that