Schematic Diagrams

Rome was not built in a day, neither was Amazon Alexa. Key insights from Amazon blog that explain why Alexa keeps getting smarter. Amazon Alexa has been the talk of the town since its arrival in the world. Based on voice-commands, it has enabled users to complete a plethora of …

In metropolitan cities traffic jams are one of the major problems and for the common man and he who use to travel on their legs is one of the major problems. Many time it is seen the people are waiting at crossing  to get the traffic clear and the people …

Athena IOTLABS is a company focused on smart meters as a service. The company also integrate smart city solutions and provide training to onsite engineers on IoT platforms. Venu Palakriti, Director,  Athena IOTLABS, in an interaction with EFY bureau, speaks about the IoT market, expectations from the government, Athena’s IoT solutions …

RS232 signals cover a much longer distance than standard TTL and I2C signals. Also, RS232 signals have better noise immunity. RS232 is a well-known standard supported by many popular integrated circuits (ICs) and therefore is still widely used. Sometimes we want to send TTL and I2C signals over a longer …

Today, there are many gadgets available with GPS technology. GPS stands for ‘global positioning system.’ It provides the data corresponding to the position of the GPS receiver itself on international-standard latitude-longitude basis, in addition to the standard coordinated universal time (UTC), along with some more information received from the nearest …

This article highlights common errors in 8-bit instruction sets, and introduces a novel architecture for decimal conversion instructions, especially in 8051, 8086, 8085 and PIC microcontrollers (MCUs). Statistical analysis of different methodologies has revealed that decimal conversion instructions in microprocessors and MCUs do not offer an error-free process. Bugs can …

Here is a simple solid-state relay (SSR) driver circuit using a transistor. An SSR is similar in operation to a traditional electromagnetic relay with movable/physical contacts. It employs an optical semiconductor, called photocoupler, to isolate input and output signals; and switching elements such as thyristor, triac, diode and transistor. An …

By Joy Mukherji The circuit presented here uses a crystal oscillator and frequency multiplier to generate a highly-stable carrier signal frequency of 96MHz. With 40mW of RF output, it can be used to transmit voice or music up to hundred metres. The circuit diagram of the 96MHz crystal-locked simple FM …

Here is the LM338 Adjustable DC power supply circuit, 1.2V to 30V.  It can provide a current maximum to 5A and 10A. If you have used  LM317 or LM350. They are similar, so easy to use with a few components. But LM338 has higher a current than LM317. You can …

This article describes a simple, low-cost DC to DC converter for a microcontroller (MCU) kit. This converter is built around popular NE555 timer. It can provide positive and negative output voltages simultaneously. Output currents are limited only by the output capabilities of NE555. Most MCU kits on the market are …