Category Archive: Electronics Projects

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TAS5630B 300W Class D Amplifier Circuit

| 2019/07/09

The core of the whole amplifier circuit is the TAS5630B one connection is based on modified the recommended BTL mode stereo input, which is listed by the manufacturer in Selection of the final chip involvement consisted of four different modes, of the optional input pins M1 to M3: TAS5630B 2 x BTL – two separate…

AVR-ISP MKII Programmer Circuit

| 2019/07/09

AVR microcontrollers are most commonly used for AVR-ISP MKII programmer programming with serial interface ISP. They are cheap and uncomplicated. However, these programmers have lost their versatility because Atmel has introduced new microcontrollers, programmed with PDI and TPI interfaces. The programmer presented in the article is universal, it will be useful to both older and…

LM4766 Amplifier Circuit Module

| 2019/07/09

The module is based on the popular LM4766 chip, completed with a symmetrical power supply. The assembled plate is a ready-made functional block of the audio system. The circuit diagram is shown in circuit schematic. The U1 (LM4766) systems operate in a non-inverting configuration. The input signal from the IN socket, through the C5 and…

Lead-Acid Battery Controller Circuit

| 2019/06/20

The project deals with the solution of an electronic device for the control of lead Acid Battery. Lead-acid accumulators are susceptible to their excessive undercuts. The occurrence of these conditions in the lead-acid battery leads to a reduction in the life and capacity of the battery and, in the event of prolonged undercharging, the battery…

Portable Mosquito Repellent Circuit

| 2019/06/20

As you know, piezoelectric transducers tricycles have a capacitive character of the load. Therefore, appropriate is required control. On the one hand, the transmitter is fed directly from the US2 generator output to construction that I used the 555 tajmer in the CMOS version. The other side of the transducer, on the other hand it…

Protection Circuit of Li-Ion or Li-Po Battery

| 2019/06/19

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 V). Low power consumption (typically 100 μA). Rail-to-Rail output. Small housing (SOT23-5). Its output directly controls the gate of the IRLML6402 MOSFET-P transistor, which switches…

ATTiny25 Three-phase 50 Hz Generator Circuit

| 2019/06/18

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, such a device becomes an unnecessary expense.nMoving the phase of an already generated analog signal would be difficult to perform, therefore it was decided to…

4 Channel Amplifier For Sound Card TDA2040

| 2019/06/18

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 2 + 1 + 1 output channels even those who have only a standard stereo signal, the amplifier described is complemented by simple custom ones…

NE556 Speed controller Circuit DC Motors

| 2019/06/16

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 appropriate their drive speed pulse while maintaining maximum Tension. Unlike speed control by changing the voltage it has a pulse-width application modulation advantage lower power…

Amplifier 2.1 with TDA7377

| 2019/06/16

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 the main component. It has 4 outputs that can deliver a power of 15W each. we distribute them as follows: First, we have 2 outputs…