Lipocharger circuit | Next Electronics

LM78S40 5V to 15V Step-up Voltage Regulator

A step-up conversion can be achieved without utilizing a transformer. This circuit is capable of converting a 5V DC source into 15V. It is important to note that there is no power gain. The described circuit employs a DC-DC boost converter...

Voltage Regulator Calculation

Before designing an adjustable voltage regulator into a circuit or performing a redesign, it is essential to calculate the values for two resistors. While this calculation is straightforward, locating the appropriate resistors may present challenges. Fortunately, a technique exists to...

Voltage regulator or resistors to change voltages for motors

After conducting some research, it was found that voltage can be adjusted using either a voltage regulator chip or resistors. Several scenarios require reducing the voltage for motors, prompting a question about the appropriate method for each application. An H-Bridge...

Logic PSU With Over-Voltage Protection

A simple 5 Volt regulated power supply unit (PSU) featuring overvoltage protection. This 5 Volt regulated power supply is designed for TTL and 74LS series integrated circuits. The 5 Volt regulated power supply unit is an essential component in electronic designs...

Tensor Energy Coils

The concept of quadrature involves three manipulable forces rather than the two traditionally considered in electromagnetism. The electric field exhibits both positive and negative voltages, while the magnetic field consists of north and south poles. Additionally, the tempic field encompasses...

Broken Charger-connection Alert

The above circuit can be useful to detect if the load of any battery charger or plug-in adaptor supply is not properly connected. The load can be a set of batteries to be charged or any other type of battery...

Dual Regulated Power Supply

The 7815 regulates the positive supply, while the 7915 regulates the negative supply. The transformer should have a primary rating of 240/220 volts for Europe or 120 volts for North America. The center-tapped secondary coil should be rated approximately 18...

Automatic Switching for Battery USB Power Connection

This is a simple circuit for automatic switchover between battery and USB port. This circuit uses a more general step-up converter architecture. The circuit designed for automatic switchover between a battery and a USB power source employs a step-up converter...

Simple Battery Level Indicator

This document presents a circuit diagram for a simple and easy-to-construct battery level indicator. Typically, in mobile phones, battery levels are shown in either dot or bar format, allowing users to easily recognize the battery status. The battery level indicator circuit...