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…
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…
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…
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…
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…
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 board with a multimeter. An error was found in the wiring. Grounding of MCP1258 was not connected to dissolved ground. The defect was fixed, but…
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 the recorded videos via UMTS or LTE mobile networks to the server where they can be viewed. Nowadays, when mobile operators offer unlimited tariffs and…
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 the charging inverter was based on the recommended connection available from LTC3536 drive datasheet, operating at 1.8 – 5.5 V input voltage I used the…
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 can be transportable everywhere and that provides an acceptable power service. Thinking about filling these expectations, we present a 20W stereo amplifier (10W per channel)…
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 integrated circuit which is a universal battery charger controller, adapted to be powered from a PV solar panel. Recommendations: the charger is worth taking with…