Biodegradable Polymers Are Promising for Supercapacitors

Posted by doEEEt Media Group
On March 3, 2023
0

Polymers with their rich diversity, outstanding flexibility, and good processability can effectively enhance the functionality of supercapacitors (SCs) and expand their practical applications. Currently, polymer materials used in SCs are non-biodegradable, posing threats to the environment.

COTS components, PASSIVES

Leakage Current Characteristics of Capacitors – Case Study

Posted by doEEEt Media Group
On March 3, 2023
0

DC leakage current is one of the key characteristics to consider when selecting a capacitor for your design. Other important parameters include working voltage, nominal capacitance, polarization, tolerance, and working temperature.

EEE Components, PASSIVES

Capacitor Losses (ESR, IMP, DF, Q), Series or Parallel Eq. Circuit?

Posted by doEEEt Media Group
On February 22, 2023
0

This article explains capacitor losses (ESR, Impedance IMP, Dissipation Factor DF/ tanδ, Quality FactorQ) as the other basic key parameter of capacitors apart from capacitance, insulation resistance, and DCL leakage current.

COTS components, PASSIVES

Insulation Resistance, DCL Leakage Current and Breakdown Voltage

Posted by doEEEt Media Group
On February 22, 2023
0

This article explains some basic parameters of capacitors – insulation resistance, DCL leakage current, and breakdown voltage / withstanding voltage.

EEE Components, PASSIVES

Capacitor Technologies Overview

Posted by doEEEt Media Group
On February 22, 2023
0

Ceramic capacitors are leading miniaturization, downsizing and dominating the market share. The right charts are based on sales VALUE, but if we have these charts in sales VOLUME ceramic capacitors would occupy up to 80% of market share of all capacitors made, on the other hand more expensive tantalum capacitors would shrink its share in volume terms.

EEE Components, PASSIVES

Evaluation of Active Balancing Circuits for Supercapacitors

Posted by doEEEt Media Group
On February 9, 2023
0

TI developed the circuit based on circuits already in use for Li-ion batteries. The integrated circuit bq33100 [1] provides more than the balancing of supercapacitor banks, being a single-chip solution that offers many features for charge control, monitoring, and protection of maximum of 5 series capacitors.

EEE Components, PASSIVES

Supercapacitor Balancing Methods Comparison

Posted by doEEEt Media Group
On February 9, 2023
0

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EEE Components, PASSIVES

Balancing – Theoretical Background

Posted by doEEEt Media Group
On February 9, 2023
0

A capacitor may be modeled by a parallel connection of an R-C unit and a insulation resistance. For the moment we neglect the insulation resistance and consider a series stack of two capacitors with capacities C1 and C2

EEE Components, PASSIVES

Supercapacitors Balancing Strategies

Posted by doEEEt Media Group
On February 9, 2023
0

Active balancing involves the utilization of actively controlled switches or amplifying systems. [3, 8] Passive balancing utilizes shunts or self-regulating resistors to lower the effect of overvoltage. Compared to passive balancing, active balancing may be fast, in some cases energy efficient but also relatively cost intensive

EEE Components, PASSIVES

Supercapacitors voltage measurements

Posted by doEEEt Media Group
On February 9, 2023
0

The voltage measurements were performed with a self-developed measurement setup, based on the integrated circuit CY8CKIT-059 from PSoC. The data acquisition was utilized with an Excel-script. The measurement setup including the programming of the script were developed by Jon-Izkue Rodriguez from WE eiSos.

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