Together we learn about electronics both in theory and practice
Power supply is a must used circuits. Most of electronic devices which require DC voltage usually need a power supply. Some of them just need original power supply or battery, but some of circuits like Radio transmitter or amplifier needs high current output power supply.
This project is a simple and easy made 5 ampere power supply. To build this circuit, just follow the instruction below:
You’re a newbie in electronics and you need to practice your electronics knowledge and then I suggest you to build this LED Flasher (Flip-Flop). This circuit is very simple and very easy to understand…
INTRODUCTION:
Flashing circuits are very interesting. They grab your attention and can be used in many applications. They consume very little energy and a single cell can last as long as 12 months. This is the simplest circuit capable of alternately flashing two LEDs.
SCHEMATIC DIAGRAM:
COMPONENT LIST:
Do you looking for high voltage capacitors for your circuit..?
I just get this table about capacitor working voltage for each type of capacitor (ceramic, electrolytic, tantalum, mylar polyester and mylar metal film capacitor).
| Ceramic | Electrolytic | Tantalum | Mylar (Polyester) | Mylar (Metal Film) |
| - | 10V | 10V | - | - |
| 16V | 16V | 16V | - | - |
| - | - | 20V | - | - |
| 25V | 25V | 25V | - | - |
| - | 35V | 35V | - | - |
| 50V | 50V | 50V | 50V | - |
| - | 63V | - | - | - |
| 100V | 100V | - | 100V | - |
| - | 160V | - | - | - |
| - | - | 200V | - | |
| - | 250V | - | - | 250V |
| - | 350V | - | - | - |
| - | - | - | 400V | 400V |
| - | 450V | - | - | - |
| 600V | - | - | - | - |
| - | - | - | - | 630V |
| 1000V | - | - | - | - |
I’m browsing to know more about capacitor… from capacitor’s color code, last kind of capacitors and other articles about capacitors. I found some interesting topic about capacitor winding machine.. yeah, capacitor winding machine is used to make capacitors…
Here are some of them, taken from Hilton International Industries, Inc:
Optima Capacitor Winding Machine
Dual winding arbors, electronic closed loop tension control and web speeds in excess of 3 meters per second make this the fastest and most accurate winding machine of it’s type in the world.
Foil edge and end folding, self threading and stripping arbors and unattended, automatic operation make it the most cost effective.
Electrolytic capacitor or electrolytics condensator or we often call “ELCO” is a type of capacitor that uses an ionic conducting liquid as one of its plates. Typically with a larger capacitance per unit volume than other types, they are valuable in relatively high-current and low-frequency electrical circuits. This is especially the case in power-supply filters, where they store charge needed to moderate output voltage and current fluctuations, in rectifier output. They are also widely used as coupling capacitors in circuits where AC should be conducted but DC should not.
Electrolytic capacitors can have a very high capacitance, allowing filters made with them to have very low corner frequencies.
Aluminum electrolytic capacitors are constructed from two conducting aluminum foils, one of which is coated with an insulating oxide layer, and a paper spacer soaked in electrolyte. The foil insulated by the oxide layer is the anode while the liquid electrolyte and the second foil act as cathode. This stack is then rolled up, fitted with pin connectors and placed in a cylindrical aluminium casing. The two most popular geometries are axial leads coming from the center of each circular face of the cylinder, or two radial leads or lugs on one of the circular faces. Both of these are shown in the picture.
In electronics and engineering we often heard something called conductor… what is a conductor..? A conductor is a material which contains movable electric charges. In metallic conductors, such as copper or aluminium, the movable charged particles are electrons (See electrical conduction). Positive charges may also be mobile in the form of atoms in a lattice missing electrons (called “holes”) or ions, such as in the electrolyte of a battery.
All conductors contain electric charges which will move when an electric potential difference (measured in volts) is applied across separate points on the material. This flow of charge (measured in amperes) is what is meant by electric current. In most materials, the rate of current is proportional to the voltage (Ohm’s law,) provided the temperature remains constant and the material remains in the same shape and state. The ratio between the voltage and the current is called the resistance (measured in ohms) of the object between the points where the voltage was applied. The resistance across a standard mass (and shape) of a material at a given temperature is called the resistivity of the material. The inverse of resistance and resistivity is conductance and conductivity. Some good examples of conductors are metal.
LED (Light Emitting Diode) is a semiconductor diode that emits light when an electric current is applied in the forward direction of the device, as in the simple LED circuit. The effect is a form of electroluminescence where incoherent and narrow-spectrum light is emitted from the p-n junction.
LEDs are widely used as indicator lights on electronic devices and increasingly in higher power applications such as flashlights and area lighting. An LED is usually a small area (less than 1 mm2) light source, often with optics added to the chip to shape its radiation pattern and assist in reflection. The color of the emitted light depends on the composition and condition of the semiconducting material used, and can be infrared, visible, or ultraviolet. Besides lighting, interesting applications include using UV-LEDs for sterilization of water and disinfection of devices, and as a grow light to enhance photosynthesis in plants.
Discovery and development
The first known report of a light-emitting solid-state diode was made in 1907 by the British experimenter H. J. Round of Marconi Labs. Russian Oleg Vladimirovich Losev independently created the first LED in the mid 1920s; his research, though distributed in Russian, German and British scientific journals, was ignored, and no practical use was made of the discovery for several decades. Read the rest of this entry »
This circuit is very simple, i’m not trying this circuit yet because i don’t have bicycle 
. You can use this cimple circuit for your practice.
A transformer can be viewed as a converter that can increase voltage and lower current, or vice versa. It only works when using AC.
The transformer is effectively a magnetic circuit. The transformer has two or more coils of wire wrapped about a common core.
The ideal relationship is: Read the rest of this entry »
In this reading we are going to talk about capacitance. I have to make a distinction here between capacitor and capacitance. A capacitor is a device, whereas capacitance is an electrical property. First we will discuss the capacitor and then the property of capacitance.
We will avoid mathematics where possible.
Construction
As you can see a capacitor is a two terminal device. There is always an insulator between the plates of a capacitor. This should suggest to you that current never flows through a capacitor.
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