Category: Miscellaneous Circuits

We saw in our last tutorial that a permanent magnet moving-coil (PMMC) galvanometer is a type of instrument in which a current carrying coil is

When analysing the operation of electrical and electronic circuits, or trying to understand why a circuit does not work as expected, eventually you will need

Nearly all electronic devices and circuits require some form of a DC power source for their operation either from a battery, solar cell or as

The advantage of relays is that it takes a relatively small amount of power to operate the relay coil, but the relay itself can be

The emission of these photons occurs when the diode junction is forward biased by an external voltage allowing current to flow across its junction, and

There are many circuits and kits on the market that can flash any number of lights periodically, randomly or sequentially but one very versatile IC

The Wheatstone Bridge diamond shaped circuit who’s concept was developed by Charles Wheatstone can be used to accurately measure unknown resistance values, or as a means of

The I-V Characteristic Curves, which is short for Current-Voltage Characteristic Curves or simply I-V curves of an electrical device or component, are a set of graphical curves which are used

We know from our tutorials about Transformers that they can not only provide a step-down (or step-up) voltage, but they also provide “electrical isolation” between

Continuing on from our tutorial about converting an ATX PSU to a bench power supply, one very good addition to this is the LM317T positive

In the tutorial about Rectifiers, we saw that the DC output voltage being controlled by the rectifier is at a value below that of the mains

But before we start looking at the in’s and out’s of pulse width modulation we need to understand a little more about how a DC