USB Battery Charger Circuit with PIC16F629

USB Battery Charger Circuit Pic16f629 microcontroller integrated with the computer’s USB port 1 100-1000 The AAA battery charging circuit charging time the battery current compared to 1-14 hours of battery is full time dual-color LED and buzzer and warning is given. Besleneeg from the USB port in the circuit diagram for the circuit in 7805 will use a 5 volt regulator IC that you do not want to use the USB port with an adapter 9v 12v going to use … 7805 should be installed .. USB battery charging circuit assembly prepared with the resources of the microcontroller software. Asm and. Hex file there.

PIC16F629 USB Battery Charger

Lead-Acid Battery Controller Circuit Lead-Acid Battery Controller Circuit 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 may become unusable. The main function of the controller is to monitor the voltage of the lead-acid accumulator and when it falls below the critical level (for 6-cell ie 12V Battery, the value of 10.5 V is normally considered) to disconnect the load from the accumulator. The second important feature the controller has is the possibility of charging the battery by connecting the AC adapter (with a voltage in the range of 16V to 26V). A ATTINY48 microcontroller can be advantageously used as the main control circuit, then other functions such as charging cycle counting, remaining battery indication, etc. can be considered. The main control circuit of the entire device is the Attiny48 microcontroller from the AVR family of Atmel. This microcontroller has been selected because it has an integrated thermometer that can be used for rough ambient temperature measurements, and also has a PicoPower mode that takes just 100 pA. At the same time, it provides enough pins to connect external elements. Block diagram power supply means the power connector for the AC adapter with DC output voltage between 16 and 26 V and input protection. The device is protected at the input from the network by a SMD fuse behind which there is a one-way transient diode, which protects the electronics against over-voltage input voltage and against excessive input voltage. The Pb-battery charging block is a MC34063A step-down converter with adjustable output voltage and current limit (adjustable by potentiometers). The possibility of realizing a switched power source controlled directly by a microcontroller was considered, but this option was eventually dropped due to safety. The output voltage of the switched power supply is enabled and set by the signals of the microcontroller, which at the same time obtains information about the output current limitation from the switched source. Setting the output voltage by a microcontroller is understood only to decrease the output voltage by 0.5 V against the set value by a potentiometer for special cases (eg higher ambient temperature, etc.).