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# Capacitor Life

35 Threads found on edaboard.com: Capacitor Life

## Charging large capacitor(1F) in hspice/cadence

I have a charge pump whose output is connected large capacitor e.g. 1F, 2F with 4 stages, stage capacitor 250pF and supplying .6V. If it is like 10nF, it is easy to monitor charging of the charge pump by running simulation in hspice. However, large capacitance at the output takes long time charging and I don't know hspice allows to do that. My qu

## Capacitor life calculation

Hello Guys, I was checking for capacitor life... How long it can run... I found calculator for measuring life. In general we are mostly using electrolyte and ceramic caps usually in routine Basic Electronic circuits. I found one parameter ripple current is affecting f

## connecting 2200 mfd capacitor on 7805 voltage regulator output

i am connecting a 2200mfd capacitor on output of 7805 regulator. i am doing this because i need 2 seconds power in my circuit when power fails. my doubt is can i connect 2200 mfd 50v capacitor on output of 7805 will it affect the ic life

## High Frequency Peak Current in Batteries

"For pulsed applications the peak load on the battery can be reduced by placing a large value capacitor in parallel with the battery. Energy for large instantaneous loads is supplied by the capacitor effectively reducing the duty cycle and stress on the battery. The capacitor recharges during the quiescent period

## Voltage Flip Over a Capacitor

Hello everyone, I would like to ask you if there is a way to flip the voltage across a capacitor without the use of an inductance in parallel. I know that connecting an inductance in parallel with a capacitor, will make the system oscillate, and after half of period of their resonance frequency the voltage across the cap. will be "flipped".

## [Moved]: TDA8571J 4x40W audio amplifier

The TDA8571J has reached the end of its life and its manufacturing is discontinued by NXP Semi. The two largest electronic parts distributors in North America have none. Its datasheet says its typical input resistance was 30k ohms (the resistor was shown) so the 470nF input capacitor was calculated to produce -3dB (half power) at 11.4Hz.

## Using fluorescent tube

That should win an award for the most complicated way to draw a bridge rectifier. It runs the tube on DC and without heater current. Expect a short tube life and unreliable starting. The available output current is almost entirely set by the 2.2uF capacitor, adjust it's value so XC = the value needed for your tube current. Brian.

## Coin cell that can deliver 10ma

Existing product that uses a CR2450 cell, the company now wants to squeeze additional circuitry (bluetooth module that will be used very intermittently) into the same footprint and enclosure. I can fit the components, however current requirements will be about 10ma for short bursts while the radio is active. No room for

You made a mistake in your Zout calculation. In this circuit Ib is not equal to 0A. To find Zout we "short" transistor base terminal to ground. But this "short" is only for AC signal. And this means the in real life we "short" transistor base to GND via large capacitor. So transistor is ON and still work in active region. obrazki.

## [WTA] ic 5555 astable with relay

i got problem using ic555 with relay. my connection of the circuit is as: pin 1: direct to negative pin2: direct to 6, capacitor 1 (100uF) to negative, resistor 2(22K ohms) to pin 7 pin3: relayto negative pin4: direct to positive pin5: 0.01 uF capacitor to negative pin6: should already be directly connected to pin2 pin7: resistor 1 (100K oh

## two question regarding electrolyte capacitor and dual color SMD led

dear all I have two question 1. what happen if i will use 47uf16v elco. capacitor in place of 47uf10v ,Is it effect remote battery life? 2. Is dual color SMD led's come in two pin Regards

## Switched Capacitor Circuits Transient Simulation on Cadence

Hi, i am trying to simulate a basic ideal switched cap circuit to make a non inverting amplifier based on on analysis in Ch.12 of Razavi's : Design of Analog CMOS Integrated Circuits, ofc due to copyright i couldn't upload more than those two pictures but please if you have the book try to read the circuit description 101476[/A

## power amplifiers class a

The secret is the centre tap. The DC current flowing from the centre tap out to each end, produces two magnetic fields that cancel, so the real magnetic field is zero, other then the AC signal component. This is why the shunt fed transformer is used, the series capacitor keeps the DC out of the transformer. In real life in the 1960s, the driver tra

## aluminium capacitor tolerances over temperature/time

Hi, I am using Panasonic made aluminum capacitor and looking for the information for capacitor tolerance over temperature and aging. Any one have any idea how to consider it for 22uF, 20% capacitor? Any help would be highly appreciated. Regards, Umesh

## Electrolytic Capacitor life time

life Calculators The ambient temperature has the largest effect on life. The relationship between life and temperature follows a chemical reaction formula called Arrhenius' Law of Chemical Activity. The law put simply says that life of a capacitor doubles for every 10 d

## What is an "audio grade" electrolytic capacitor?

Hello treez, every good elektrolytic capacitor or normaly capacitor is "audio grade". Some "Audio gurus" think, that they can hear differences between capacitors. They say, this one have a better "sound" than the other. So they say this is "audio grade" and that not, but by measuring they can not give an argument. In my opinion is this (...)

## Help me identify capacitor values

All these tone control nodes are on grid potential of V2/2 - on both capacitor nodes. So I think a max. operating voltage of 100V is more than enough! The 100nF anode caps should stand ≧ 300V, of course.

## Differential amplifier for current sense noise problems (schematic)

Hi. Because of the fact that a pair of resistors and capacitor won't have excactly the same values in real life, the filters on the input will slightly differs from each other. Therefore I'll claim that the circuit is very sensible for small variations (or errors if you want) in RC values. I haven't read the datasheet for the opamp before postin

## Overvoltaging a capacitor critical or not ?

capacitor rated voltage always should be at least twice as working voltage by default if we whant quality of product and reliability. This capacitor rated at 16V will do the job, at 10V its on edge, and you risk life and health of 4700uF capacitor. I will use 25V not lower. :wink: Also load/consumer will suffer if (...)

## capacitor parameter comparision (ripple current, impedanse)??

From this standpoint, capacitor B is better in every single spec. probably is more expensive too.

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