5.1 Control board project for sound system. Remote control, LCD, Encoder. I have almost no application with Arduino, I always tried to use Arduino alternatives and somehow found circuit solutions. But audio applications always intrigue me. I applied the digital volume control Arduino project made with Arduino Nano PT2323 and PT2322 audio control ICs, the…

8-OHM RMS 100W Amplifier ZENER’s 500W version. Semi-complementary ZENER amplifier, the sound is very clean and there is no pop sound at the opening. As long as you make it with original and quality components, you can use it for heavy sounding jobs. One of the biggest advantages of this amplifier with differential torque regulation…

Active PFC supported SMPS power supply is made with IR2156 Ballast driver integrated circuit. Active PFC section uses MC33262 active power factor integrated circuit. Output voltage of SMPS circuit on load is 2X40VDC PFC output voltage is 400V There is source PCB drawing of Active PFC Power supply project (sprint layout 6) also MC33262 PFC…

Switched power supply, SMPS circuits can take a long time to repair, continuous measurements are made, electricity is supplied, re-checking, etc. When the input voltage 220VAC is cut off, there will be a voltage between 300VDC….320VDC on the DC high voltage line (in active PFC circuits, it can be 380V or higher) because the filter…

While I was thinking that there is no worse, dangerous, low-quality design for 18650 Rechargeable Li-Ion batteries and chargers, I encounter much worse chargers and batteries. The batteries of the LED Headlamp are completely dead, the charger is extremely low-quality and weak, so I placed a TP4056 module in the charger so as not to…

A project made with Arduino to redesign a control panel with large and mechanical on-off switches. A circuit was designed with Arduino to use a smaller push-release button. The pressed buttons are kept in memory and when the power is given again, the output of the previously pressed buttons does not change. The circuit works…

Open source ECU. Electronic control unit is the new generation automotive engine management. With the availability of cheap but extremely powerful STM32 microcontrollers, a very simple and powerful engine management system is possible. Designed with high-performance STM32 series running Real Time Operating System. There are different versions of the project, source codes, pcb drawings, 3d…

A converter circuit design was made with UC3842 as the power supply of 170VDC and 3.1 Ampere motor to operate the lathe. At first, the lathe machine was operated with a sheet metal transformer power supply, but since it took up too much space, more space was gained with a switching power supply small enough…

I made a PCB drawing with the power stage of the TL494 control circuit that I shared in the article “Converting a Computer Power Supply to a Battery Charger”. The PCB size is small and light enough to fit in a toolbox with a thick strip cooler that cannot be higher than 10×10 cm, a…

In the analog soldering station project, a “K” type thermocouple was used for temperature measurement. With the adjustable soldering iron circuit, Quick, Solomon and Gordak brand soldering irons were tested for 48 hours and excellent results were obtained in terms of operating safety and maintaining the set temperature. A 24VAC 60W transformer is used for…

In the article CH341A 95640 Eeprom, New Chips and RCD300 Tape Password, I mentioned the programming of new integrated circuits that are not in the CH341A list. A software has been developed that adds extra functionality to the CH341A USB EEPROM-FLASH programmer module. CH341A New Functions: Detecting I2C devices Writing/Reading raw I2C data Writing/Reading raw…