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A technical guide to capacitor What is capacitor Capacitors are components that have the ability to store electrical energy. This energy is stored in an electrostatic field which is created by electrical charges accumulating on conducting plates placed across an electrical potential and separated by an insulating medium. Capacitance as a value is dependent upon the distance between the conducting plates, the dielectric constant of the insulating medium, and the common area of the conducting plates. The unit of capacitance is the FARAD A farad of capacitance is a LOT of capacitance. We generally deal in microfarads (mfd.) or nanofarad (nf) or picofarads (pf) Film Capacitors A film type capacitor made from this simple approach would create a large component. To prevent the waste of space the plates are “rolled” together, with an extra layer of dielectric to prevent the plates from touching, which results in a higher capacitance and smaller size. Film Capacitors come in ...

The reliability of an electrical system depends on its components. By using an automotive relay for turning devices on and off, you can enhance the performance as well as reliability of your system. It is in fact an electro-mechanical switch which makes use of an electromagnet to attract a bunch of pins or contacts together. Why relays score over switches You can get good quality relays for sale available with online portals , but you might think why you should go for relays instead of an ordinary switch. Here are some of the features of relays that make them more effective than switches. ·         An automotive relay when appropriately wired will ensure that the shortest electrical path is achieved between the battery and the device which the relay controls. The arrangement, along with an appropriate gauge wire, guarantees that the voltage drop between the device and the battery is minimized. This in turn allows the device to maintain it...

General Latching relays are classified as mechanical and magnetic latching systems. It uses a magnetic H-armature system with the magnets inset into the high grade plastic of the H-armature. Rotation of the H-armature round its anchor point allows a short switching time and it is not sensitive to vibration of shock Compared to mono-stable relay, a latching relay only requires power to change the contact position, with the obvious advantages. No power consumption in the hold position. No additional heating caused by the driving coil. Maintenance of the contact  position in case  of power failure. Higher contact force and lower operating power. High resistance  to vibration and shock §    §   Figure 1: Driving a double coil polarized latching relay §   How to control §   The driving coils of the latching relays are equipped with three connectors (centre-tap-ped). This enables the user to choose betwee...