AmplifierCircuits

So, the microcontrollers today offering a more and simple solution our lives. One of the controllores is LPC11Cx2. The LPC11Cx2/Cx4 are an ARM Cortex-M0 based, low-cost 32-bit MCU family, designed   for 8/16-bit microcontroller applications, offering performance, low power, simple instruction set and memory addressing together with reduced code size compared to  existing 8/16-bit architectures. The LPC11Cx2/Cx4 operate at CPU frequencies of up to 50 MHz.  The peripheral complement of the LPC11Cx2/Cx4 includes 16/32 kB of flash memory,  8 kB of data memory, one C_CAN controller, one Fast-mode Plus I2C-bus interface, one  RS-485/EIA-485 UART, two SPI interfaces with SSP features, four general purpose  counter/timers, a 10-bit ADC, and up to 40 general purpose I/O pins. On-chip C_CAN drivers and flash In-System Programming tools via C_CAN are included.  In addition, the LPC11C22 and LPC11C24 parts include an on-chip, high-speed CAN transceiver.  ...

arduino .cc/en/uploads/Main/ Arduino _Uno_Rev3- schematic .pdf

This article is about a simple auto ranging ohmmeter using arduino. The measured resistance is displayed using a 16×2 LCD display. The circuit is sufficiently accurate and uses minimum number of external components possible. Before going into the details of this project, lets have a look at the basic resistance measurement method. Resistance measurement. The figure above shows the circuit diagram of a simple resistance measurement scheme. Rx is the resistance to be measured. R1 is the input resistance. i is the current passing through the loop and 5V is the supply voltage. To find the unknown resistance Rx, the voltage across Rx is measured first. let the voltage across R1 be VR1. Then VR1=5-Vx. The current i=VR1/R1=(5-Vx)/R1. Since R1 and Rx are connected in series, the current through them will be equal. So the unknown resistance Rx= Vx/i. The voltage across the unknown resistance is measured using the ADC of the arduino. To be precise, analog channel A5. Anyway this me...

TA8246AH is dual power amplifier for Consumer applications. This IC provides an output power of 6 watts per channel (at VCC = 20 V, f = 1 kHz, THD = 10%, RL = 8 Ω). It is suitable for power amplifier of TV and home Stereo.  Circuit diagram: Dual Audio Power Amplifier 6 W × 2 Ch

22W x 4 Channel Audio Amplifier Circuit Diagram TA8255AH

Circuit diagram for TA8251AH: 30 watt 4 Channel audio amplifier IC

The TA8159FN developed for play−back stereo headphone  equipments (1.5V use). It is built in dual auto−reverse pre  amplifiers, dual OCL power ampilfiers, and a ripple filter.  Circuit Diagram: Circuit diagram for 6mW 1.5V Stereo Headphone Amplifier