jbcapacitors blog

 Many customers buy from jb capacitors JFX audio capacitors. Customers use our JFX to replace Erse, Mundorf, Jantzen audio capacitors.

 
Our lead time is very good, prices are much better than our competitors, more important, we sell very good quality. Our JFX enjoyed good reputation in the market.
 
We accept 100pcs MOQ each item for trial order, welcome to send me your inquiry, and let me check prices for you. 
 
Below i recommend you the most popular items, look forward to your inquiry or order, thank you. Contact: info@jbcapacitors.com

Plastic film capacitors is one of the most common and popular capacitors,  made of three kinds of materials,  polyester film, polypropylene film, and polystyrene film.

jb capacitors produce total 23 kinds of plastic film capacitors, including polyester film capacitors, polypropylene film capacitors, polystyrene film capacitors.

visit website: http://www.jbcapacitors.com/Plastic-Film-Capacitors/

Audio Capacitor is specially used for audio products. like Amplifier, Cross-Over, and Loudspeakers. jb capacitors company produce high quality Audio film capacitors, JFX series.

JFX series is Premium Metallized Polypropylene Film Capacitors, Axial lead. Can replace Mundorf, ESRE, Jantzen Audio, SCR / SOLEN.

X2 capacitor is same as Safety capacitor, also called Interference Suppression MKP film capacitors.  X2 capacitors indicate which grade the capacitors can withstand the voltage with normal working.

Have safety approvals, like UL, TUV, CE, VDE approvals.  JFV X2 film capacitors is jb capacitors best seller in market, with quite good quality and shortest lead time. Pls. visit our website www.jbcapacitors.com and contact us for more detail information.

Dear Purchasing Manager,

Hello! This is Ms. Lilian from jb capacitors company, so nice to write to you. We are professional 
manufacturer for MKT MKP film capacitors since 1980. visit our website: www.jbcapacitors.com  

Today, I bring you our most strong series Film capacitors----JFX series Axial type premium metallized polypropylene film capacitor, pls. check below our datasheet and photo. 
This JFX series Axial type MKP film capacitor, widely used in Passive Crossovers, Loud speakers, amplifiers etc...high end audio equipments. 

Compare with Mundorf, Auri cap, Mallory, Jantzen, Erse audio, our lead time is much better, and  more important, our price is very good. 

Here we have 4.7uF 250VDC +/-5% stock samples, welcome to check prices and ask for samples. 

JFX-Preminum Metallized Polypropylene film capacitor Datasheet: 
http://www.jbcapacitors.com/pdf/JFX-Premium-Metallized-Polypropylene-Film-Capacitors-Axial.pdf

You can use your multimeter as an ohmmeter to test the capacitor.

1) Discharge the capacitor by shortening its leads. that is - use a wire and connect the leads of the capacitor together. this will discharge it.
2) Put your multimeter in the high ranges 10k-1m
3) Connect multimeter to capacitor leads(observe the polarity if electrolytic). at soon as the leads make contact, the meter will swing near zero. it will then move slowly toward infinity. finally the meter would come to be infinite ohms because the capacitor is being charged by the battery of the multimeter.
4) If the capacitor is bad, it will go to zero ohms and remain there. this is called a shortened capacitor
5) In the case of an open capacitor there will be no ohmmeter indication.
6) Some capacitors have a low dielectric leakage. you will know this if the ohmmeter comes to rest at a point lower than infinite. test a known good capacitor of the same type to be sure.

This test works for large capacitors. Tiny capacitors can only be checked with a capacitance meter, or by using them in an AC circuit and checking for variation from calculated voltage drop.
Pls. focus on jb most strong series:  JFB--MKT (Metallized Polyester ) Film Capacitors &JFV--X2 MKP (Metallized Polypropylene) Film Capacitors.

jb Capacitors Strong Products:

JFA--Mylar polyester film capacitors
JFB--Metallized polyester film capacitors
JFL--Metallized polypropylene film capacitors
JFG--Axial lead film capacitor
JFV--X2 275VAC met polypropylene film capacitors
JFZ--X2 310VAC met polypropylene film capacitors
JFP--High voltage metallized polypropylene cap
JFQ--Double sided metallized polypropylene cap
JFS--Motor Running capacitors
JFX--Premium metallized polypropylene Cap
JSX--Superior metallized polypropylene Cap
JCS--85°C SMD electrolytic capacitor
JCK--105°C SMD electrolytic capacitor
JRA--85°C Radial Aluminum Electrolytic Capacitor
JRB--105°C Radial Aluminum Electrolytic Capacitor

A capacitor is a small device that can be charged up with electrical energy, store it and then release it. Just like a rechargeable battery. But unlike a battery, it does not use a chemical reaction and it can only hold a very small charge. A very large capacitor can only light up an LED for a few seconds. They come in many shapes and sizes and a few are shown below. The bigger the capacitor, the more charge it will hold. Capacitor is made from two metal plates or metal foils separated by an insulator called a Dielectric material.

The Dielectric materials can be made from Ceramic, Mica, Polypropylene, Polyester, Electrolytic, Tantalum and even air.

The larger capacitors look like tubes, this is because the metal foil plates are rolled up with an insulating dielectric material sandwiched in between.

The value of capacitance is determined by

1.The size of the plates,

2.The distance between them,

3.The type of dilectric material used.

jb capacitors company are professional in all kinds of capacitors ,such as Plastic Film Capacitors ,Aluminum Electrolytic Capacitors,SMD Aluminum Electrolytic Capacitors ,Metallized Polyester Capacitors, Metallized Polypropylene Capacitors, SMD E Cap and etc.Any questions ,please don't hestate to contact us.

jb capacitors company, just your best choice!

Keywords: Ripple Voltage, AC power supplies, audio amplifier, open-loop

Capacitors are used to couple each stage of an amplifier to the next, to help remove ripple voltages from rectified AC power supplies and they are also used to tune circuits to get the required frequency response, such as a tone control in an audio amplifier, or an RF or IF amplifier in a radio receiver front-end.

Capacitors are also used to bypass emitter resistors to improve the voltage swing and lower the AC output impedance of class A amplifier stages, and also used in negative feedback loops to stabilize an amplifier's open-loop gain.

We jb capacitors company professional produce MKT & MKP film capacitors, total 22 series. we have two representitive types used in Amplifier, audio, sound system. please check below.

JFG-- Axial Met Polyester & Polyrpopylene Film Capacitor, nice appearance, very popular in market now.

Flat and Round shape are available

Datasheet: http://www.jbcapacitors.com/pdf/JFG-Axial-Metallized-Polyester-Polypropylene-Film-Capacitor.pdf

JFX-- Axial Premium Met Polypropylene Film Capacitors, this is a high end audio capacitor, quality is quite good.

Datasheet: http://www.jbcapacitors.com/pdf/JFX-Premium-Metallized-Polypropylene-Film-Capacitors-Axial.pdf

Welcome to send us your inquiry to info@jbcapacitors.com Skype: jbcapacitors

jb capacitors company is a professional ISO factory. Produce MKT MKP Film capacitors since 1980.

During October to December, jb capacitors company mainly promote JFV series X2 film capacitors. We have very special discount for JFV X2 film capacitors during this time.

So, if you have any order plan or forecast for 2012 recently, pls. feel free to send to us for quote, you will receive satisfied prices. 

JFV-X2 Metallized Polypropylene Film capacitors

Features:
1.Non-Inductive, (UL940V-0) plastic case sealed with epoxy resin.
2.Provides interference suppression with UL,CE & TUV approvals
3.High dv/dt capabilities.

Specifications:
1. Operating temperature: -40C'~+100C'
2. Voltage Rating: 275VAC
3.Capacitance Range: 0.001uF ~ 2.2uF
4.Capacitance tolerance: +/-10%

Cross Reference:
Epcos : B81130, Vishay MKP3362, MKP3382, Arcotronics(Kemet) R46, Wima MP3 X2, Philkor: PCX2 335, 337

Main applications:
Electronic ballast, LED driver, Amplifier, controller device, power supply, meters, white goods etc..

jb capacitors advantage:
Competitive price, short lead time, reliable & stable quality, the best customer service
If have regular X2 orders, we can specially keep stock for you.
Pls. kindly contact info@jbcapacitors.com for any details.