In general, the loudspeaker coil will light up as a result of overload or if the amplifier fails and supplies DC voltage to the output. Generally, repairs are not made for low-power speakers, but for expensive high-power speakers, repair is more economical. Tools for replacing the speaker coil; Hobby drill or hand motor Scissors Soldering…
The Jtag Isolator device is intended for designers working with devices supplied with voltage dangerous to life or at a potential much higher than the potential of the earth. In the JTAG isolator, the connector on the programmer’s side is 10-instead of 6-pin and fits the JTAG output, which also contains ISP lines in the…
Solenoid valves are devices widespread in industry and outside. The indisputable convenience of use is paid for by the considerable power consumption of the coil, which – obviously – heats up to a significant temperature, while high force is needed only during the movement of the core in the electromagnet. The presented system allows to…
Raspberry Pi GPIO GPIO Pi B + extension module The described extension module design allows the use of Raspberry Pi + in control and control applications, providing access to all GPIO signals available in the new version. 14 × GPIO with 3.3 V CMOS logic level 8 × GPIO with level converter to the 5…
Electric motors, in addition to many obvious advantages, also have some disadvantages. One of them is the consumption of a much higher current during start-up compared to the current consumed during normal operation, which can overload the power supply. The schematic diagram of the “soft start” system is shown in figure. The multivibrator with the…
Digital PIC18F4455 multimeter is nowadays the most used measuring instrument for electrotechnical measurements. For users, the advent of digital multimeters meant above all reliability and instrument for measuring all common electrical parameters. Users’ claims However, this device is constantly growing and with the massive expansion of computer technology begins to be a new requirement to…
Arduino Neopixel Spectrum Analyzer Microphone, Arduino, and LED strip to express the sound with light, together with hardware developer who likes to make physical computing, new media art, and IoT. An Arduino ws2812 8 band led spectrum analyzer was produced. ws2812 LED strip (144 LED / 1M), Arduino pro mini 5V 16MHz, Breadboard, Microphone, 1…
Despite the apparent simplicity, this amplifier showed excellent quality parameters, which allows you to safely rank it as a Hi-Fi equipment. The amplifier has a very pleasant sound in the mid-eighties was patented. Since then, the element base has changed quite a lot and it has been possible to simplify the circuit, preserving the idea…
HI-FI 2 x 80W Power Amplifier on STK442-090 Micro assembly Most radio amateurs can be divided into two categories: supporters and opponents of microcircuit amplifiers. As arguments for using such amplifiers, the former cite the simplicity of the circuit, high reliability and stability of operation due to the high integration of the microcircuit. As a…
Completed class d amplifier project Class d power amp, preamp, vu meter, psu, panel desing. Learn about design of amplifiers in class D. Design amplifier wiring for bass with a power output of about 100 W. Complete the output stage with an active correction preamp with with a three-band equalizer and a switchable center band…