The project described here is a high-efficiency dual BTL class-D audio amplifier with single supply operations. The project was built using TDA7491LP13TR from ST. The low profile PCB design can fit in a small area, operating power supply 9-12V DC, Project supports single-ended or differential audio signal inputs. Jumpers are provided to set the various gains, standby, and mute functions. […]
5 W + 5 W DUAL BTL CLASS-D AUDIO AMPLIFIER Read More »
This is easy to build and very useful project for hobbyists and students to learn and create OPAMP-based projects. The project accommodates a single OPAMP in the SOT23-5 package. The project provides the user with multiple choices and extensive flexibility for different applications circuits and configurations. It provides the user with many combinations for various
UNIVERSAL OPAMP BOARD FOR SMD SOT23-5 PACKAGE Read More »
Easy-to-use general purpose power supply units ideal for various bench applications requiring stand-alone or system use. Farnell, an Avnet Company and global distributor of electronic components, products and solutions, is further expanding its market-leading test and measurement range with the introduction of the new NGA100 power supply series, part of the Essentials Portfolio, from Rohde &
NEW ROHDE & SCHWARZ NGA100 POWER SUPPLY SERIES, STOCKED BY FARNELL Read More »
This is 5V portable power supply circuit for pic microcontroller experiments. or PIC microcontroller power supply circuit. As The PIC16F627A microcontroller use 5 volts DC power supply. My son need to build it as 5V portable power supply circuit, because of the need for safe and convenient use in all locations. How it works I
PIC microcontroller power supply circuit by Chayapol Read More »
In our lab I saw many DC power supply which have a variable knob to regulate the output. I was dreaming to make such a project where I can regulate the voltage using push button.As I am not an industrial level expert so this project is just about a digital DC power supply of small
Digital DC Power supply using PWM with PIC microcontroller Read More »
Introduction The aim of this project was to produce a portable ECG monitor that displays the ECG signal of an Einthoven triangle configuration of electrodes (3 leads). The motivation of this project comes from the pervasiveness of cardiac problems in the world, which cause the highest number of death, as well as the relatively uncommon
Single-Supply Portable ECG Monitor Read More »
General purpose differential amplifier project has been designed for various pressure sensor amplifier applications. Circuit provided with multiple resistors, capacitors, dual sensor options and 4 pin Header connector to interface other external sensors. Schematic is an example from NXP application AN1318 Figure 2. The most popular silicon pressure sensors are piezo-resistive bridges that produce a
INSTRUMENTATION AMPLIFIER FOR PRESSURE SENSOR Read More »
WCH, a Chinese integrated circuits manufacturer, has just released a new serial to USB chip called CH340E. Unlike other CH340 chips, it doesn’t require an external crystal and also needs less PCB space and BOM. CH340 is a 3x3mm tiny chip comes in MSOP10 package and has 10 pins. Although it is smaller than other alternatives, it is a
CH340E, A NEW SMALL SERIAL TO USB CHIP Read More »
9-VDC-POWER-SUPPLY-G015 Tiny low current 9 VDC Regulated Power supply designed around bipolar transistor and zener diode. The circuit is known as series voltage regulator or emitter follower voltage regulator. The unregulated supply fed to input and the circuit regulate the voltage and provide constant 9V DC, 250mA. The zener diode provides the reference voltage to
9 VDC Regulated Power Supply Read More »
In this post we introduce simple and flexible, regulated low voltage power supply unit. This power supply has provision for 4 outputs such as 1.5V, 1.8V, 2.5V and 3.3V. We mainly build this low voltage power supply unit to test (and power-up) low voltage MCUs, CPLDs and radio receivers. For this power supply we choose
Low voltage power supply unit Read More »
