jbcapacitors blog

  Supercapacitors are widely used in high-power power supplies and large-scale industrial power systems. They are now found in products of various sizes, particularly portable devices. Known for their capacitance values reaching thousands of farads and fast charging and discharging rates, supercapacitors are essential components in many applications.

Thanks to their ability to store large amounts of electrical energy for extended periods, supercapacitors function more like batteries than traditional capacitors. As technology progresses, supercapacitors are expected to replace rechargeable batteries in many products, including computers, digital cameras, mobile phones, and other handheld devices.

Many companies around the world are actively engaged in research and development of supercapacitors. Some of the leading manufacturers in the industry include well-established brands in the market.

jb Capacitors offers the following high-quality supercapacitors:
JGA - 5.5V Standard Coin Type Super Capacitors
JGM - 5.5V 7.5V Combined Type Super Capacitors
JGY - 5V 7.5V Combined Type Super Capacitors
JGZ - 2.7V 3V Low ESR Radial Snap in Screw Type Super Capacitors

For more information about these products, please visit our official website.
 

The electrolytic capacitor has been in use for many years. Its history can be traced back to the very early days or radio around the time when the first broadcasts of entertainment were being made. At the time, valve wireless sets were very expensive, and they had to run from batteries. 
However with the development of the indirectly heated valve or vacuum tube it became possible to use AC mains power.

While it was fine for the heaters to run from an AC supply, the anode supply needed to be rectified and smoothed to prevent mains hum appearing on the audio. 
In order to be able to use a capacitor that was not too large Julius Lilienfield who was heavily involved in developing wireless sets for domestic use was able to develop the electrolytic capacitor, allowing a component with sufficiently high capacitance but reasonable size to be used in the wireless sets of the day.

Electrolytic capacitor symbols

The electrolytic capacitor is a form of polarised capacitor. The electrolytic circuit symbol indicates the polarity as it is essential to ensure that the capacitor is fitted into the circuit correctly and is not reverse biased.

Circuit symbols used for polarised capacitors like the electrolytic capacitor

There is a variety of schematic symbols used for electrolytic capacitors. The first one '1' is the version that tends to be used in European circuit diagrams, while '2' is used in many US schematics, and '3' may be seen on some older schematics. Some schematic diagrams do not print the "+" adjacent to the symbol where it is already obvious which plate is which.