Electronics Projects Archive

Electronic plans news for electronic hobbyist or engineers. Free electronic schematics (circuits) electronic blog site. Electronic content post and more..

Protection Circuit of Li-Ion or Li-Po Battery

The basic component is the operational amplifier MCP6001 acting as a comparator. It has a number of advantages that were used in this project: Small supply voltage (1.8 to 6..

ATTiny25 Three-phase 50 Hz Generator Circuit

Multifunctional sinusoidal three-phase signal generators are available on the market for testing inverters. However, in a situation where a simple control is necessary, to which a single frequency signal suffices,..

4 Channel Amplifier For Sound Card TDA2040

PC sound cards with multiple line outputs are commonplace than left and right channel for classical stereo reproduction. The described TDA2040 amplifier is designed especially for sound cards with four..

NE556 Speed controller Circuit DC Motors

The circuit is designed for DC 12V motor and has been tested with miniature drill BOSCH MBM04. Because they can take motor from the source of higher currents, it is..

Amplifier 2.1 with TDA7377

Small amplifier TDA7377 of 15W + 15W + 30W in 4 ohms At the request of our followers, we have developed an amplifier with the following characteristics: The TDA7377 is..

Arduino UNO Luxmeter Project (LCD USB)

When reviving a luxmeter on a printed circuit board, there was a problem that the proposed connection is inoperative. The first option was quickly verified by measuring the printed circuit..

Arduino YUN Security Project USB modem PIR, IP Cam FTP

Deals with the design of a special security system in which, apart from the usual parts such as camera and motion sensor, a USB dongle will be used to send..

LT1308IS8 LTC3536 Solar Cell Backup USB Power Supply Circuit

The solar cell powered back-up power supply should be as efficient as possible, it should be simple construction due to possible failures and should be reasonable sizes. The design of..

20W Stereo Amplifier With TDA2003 Tone Control

Many times we have been asked about an amplifier that can be powered with the computer source to amplify this. We have also seen the need for an amplifier that..

LTC3652 Solar battery charger LiFePo4

The charger presented in the article is intended for charging the battery pack – LiFePO4 2S 1.8Ah with electricity from a photovoltaic cell. The charger is based on a LTC3652HV..