Charger for car batteries. Scheme, description

Free technical library

ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
Free library / Schemes of radio-electronic and electrical devices

Charger for car batteries. Encyclopedia of radio electronics and electrical engineering

Free technical library

Encyclopedia of radio electronics and electrical engineering / Automobile. Batteries, chargers

Comments on the article

Acid batteries "do not like to be out of work for a long time." Deep self-discharge can be fatal for them. If the car is parked for a long time, then the problem arises: what to do with the battery. It is either given to someone to work, or sold, which is equally inconvenient.

I propose a fairly simple device that can serve both for charging batteries and for their long-term storage in working condition.

Charger for car batteries

From the secondary winding of the transformer T1, the current in which is limited by the inclusion in series with the primary winding of the ballast capacitor (C1 or C1 + C2), the current is supplied to the diode-thyristor bridge, the load of which is the battery (GB1). As a regulating element, an automobile generator voltage regulator (RNG) for 14 V of any type is used, designed for generators with a grounded brush. I tested the regulator type 121.3702 and the integral -YA112A. When using the "integral" conclusions "B" and "C" are connected together with "+" GB1. The output "Sh" is connected to the circuit of the control electrodes of the thyristors. Thus, a voltage of 14V is maintained on the battery at a charging current determined by the capacitance of capacitor C2, which is approximately calculated by the formula:

Charger for car batteries

where Iz is the charging current (A), U2 is the voltage of the secondary winding when the transformer is "normally" turned on (V), U1 is the mains voltage.

Transformer - any, with a power of 150 ... 250 VA, with a voltage on the secondary winding of 20 ... 36 V. Bridge diodes - any for a rated current of at least 10 A. Thyristors - KU202 V, G, etc.

S1 is used to switch between charging and storage modes. The charging current is selected equal to 0,1 of the numerical value of the battery capacity, and the storage current is 1 ... 1,5A.

If possible, then periodically, approximately once every two weeks, it is desirable to discharge the battery with a current of 2Iz with control of the electrolyte temperature.

The device requires almost no settings. It may be necessary to clarify the capacitance of the capacitor by controlling the current with an ammeter. In this case, it is necessary to short-circuit terminals 15 and 67 (B, C and W).

Author: K. Selyugin, Novorossiysk; Publication: N. Bolshakov, rf.atnn.ru

See other articles Section Automobile. Batteries, chargers.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Artificial leather for touch emulation 15.04.2024

In a modern technology world where distance is becoming increasingly commonplace, maintaining connection and a sense of closeness is important. Recent developments in artificial skin by German scientists from Saarland University represent a new era in virtual interactions. German researchers from Saarland University have developed ultra-thin films that can transmit the sensation of touch over a distance. This cutting-edge technology provides new opportunities for virtual communication, especially for those who find themselves far from their loved ones. The ultra-thin films developed by the researchers, just 50 micrometers thick, can be integrated into textiles and worn like a second skin. These films act as sensors that recognize tactile signals from mom or dad, and as actuators that transmit these movements to the baby. Parents' touch to the fabric activates sensors that react to pressure and deform the ultra-thin film. This ... >>

Petgugu Global cat litter 15.04.2024

Taking care of pets can often be a challenge, especially when it comes to keeping your home clean. A new interesting solution from the Petgugu Global startup has been presented, which will make life easier for cat owners and help them keep their home perfectly clean and tidy. Startup Petgugu Global has unveiled a unique cat toilet that can automatically flush feces, keeping your home clean and fresh. This innovative device is equipped with various smart sensors that monitor your pet's toilet activity and activate to automatically clean after use. The device connects to the sewer system and ensures efficient waste removal without the need for intervention from the owner. Additionally, the toilet has a large flushable storage capacity, making it ideal for multi-cat households. The Petgugu cat litter bowl is designed for use with water-soluble litters and offers a range of additional ... >>

The attractiveness of caring men 14.04.2024

The stereotype that women prefer "bad boys" has long been widespread. However, recent research conducted by British scientists from Monash University offers a new perspective on this issue. They looked at how women responded to men's emotional responsibility and willingness to help others. The study's findings could change our understanding of what makes men attractive to women. A study conducted by scientists from Monash University leads to new findings about men's attractiveness to women. In the experiment, women were shown photographs of men with brief stories about their behavior in various situations, including their reaction to an encounter with a homeless person. Some of the men ignored the homeless man, while others helped him, such as buying him food. A study found that men who showed empathy and kindness were more attractive to women compared to men who showed empathy and kindness. ... >>

Random news from the Archive

Genes for homosexuality found 04.12.2017

Scientists from America, specializing in neurobiology and psychology, conducted research whose goal was to determine the genes in the chromosomes of men responsible for the awakening of homosexual inclinations.

It turned out that the stronger sex has 2 genes that are capable of forming a non-traditional sexual orientation.

The first gene (SLITRK6), responsible for the awakening of homosexuality, has the 13th chromosome. The second gene, TSHR, is part of the 14th chromosome and also changes the sexual orientation of men.

Other interesting news:

▪ The brightest galaxy in the universe discovered

▪ Self-destroying smartphone

▪ Headphones Xiaomi Buds 4 Pro

▪ New generation of OctaBus memory interface

▪ New series of ultra-bright white LEDs HLMP

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site Your stories. Article selection

▪ article Kovalevskaya Sofia. Biography of a scientist

▪ How did the grapefruit get its name? Detailed answer

▪ article Working on a cutting machine. Standard instruction on labor protection

▪ article Three-element ZYGI BEAM. Encyclopedia of radio electronics and electrical engineering

▪ article Macedonian proverbs and sayings. Large selection

Leave your comment on this article:

All languages of this page

Home page | Library | Articles | Website map | Site Reviews