Convert your Computer UPS to Home UPS

Jan 29, 2016

This article explains an interesting topic, how to convert your computer UPS into home UPS. If you own a desktop computer, you may have a UPS that can power your computer for 10-15 minutes after power failure.

Hospital Room Call Bell Circuit

Jan 28, 2016

The post discusses a simple hospital room call bell circuit which can be installed in hospital patient rooms for allowing the patients to get a quick access to a medical representative or a nurse whenever in need, by simply pressing a call button at the bedside. The idea was requested by Mr. Willy.

High Voltage Battery Charger Circuit

Jan 27, 2016

The post details a simple automatic High Voltage Battery Charger Circuit which can be used for an automatic charging control of any preferred high voltage battery bank such as a 360V battery bank. The idea was requested by "resonance".

How to make simple a LI-FI (Light Fidelity) Circuit

Jan 22, 2016

LI-FI is buzzing around the Internet since past few years; recently LI-FI is gained more popularity around the internet and developers. LI-FI stands for Light Fidelity which was coined by Harald Hass.

Selecting Power Supply for Car Amplifiers

Jan 21, 2016

The following discussion informs us regarding how to select the right power supply for a car amplifier which needs to be operated at home. The questions were raised by Mr. Gyaneshwar Singh.

Water Saving Irrigation System using Timers

Jan 20, 2016

The article presents a simple water saving irrigation system circuit idea which can be used for implementing an efficient water management and control in farms and irrigation systems.

Battery Desulfator with Charger Circuit Using a Bridge Rectifier

Jan 18, 2016

To make this simplest yet effective battery desulfator with charger circuit you would just require a suitably rated transformer, and a bridge rectifier. The design not only desulfates a battery, it keeps the new batteries from developing this issue and simultaneously charges them to the desired levels.

Electronic Stethescope Amplifier Circuit

Jan 15, 2016

The post explains how to make an electronic stethoscope amplifier circuit for enabling a loud audible reproduction of the heart beats which is being diagnosed. The article also reveals how the same can be applied within a cellphone through a wireless circuit. The idea was requested by Dr. Ankit.

Universal Variable Power Supply Circuit

Jan 13, 2016

The presented universal power supply circuit can be used just for anything, you can use it as a solar battery charger, bench power supply, mains battery charger circuit, or for any desired application regardless of the voltage and current range, which are extremely flexible and fully adjustable.

Design a High-Pass Filter Circuit Quickly

Jan 12, 2016

In this post we learn how to design a high-pass filter circuit within minutes by following similar procedures quite similar to ones suggested in our previous post for the low pass filter.

Design a Low-Pass Filter Circuit Quickly

Jan 11, 2016

In this publish we learn how to design a low pass filter quickly without going through complex theoretical explanations.

8 Function Christmas Light Circuit

Jan 9, 2016

A simple mains operated, transformerless 8 function Christmas light circuit can be made by using a single IC, a rotary switch and a few SCRs, let's learn the procedures in detail.

MPPT Circuit using PIC16F88 - Code and HEX

Jan 8, 2016

The earlier article comprehensively described the circuit details of an MPPT using PIC16F88 microcontroller, here we get the access to the source code for programming the PIC and the HEX file format for the same.

MPPT Circuit using PIC16F88 with 3-Level Charging

An MPPT as we all know refers to maximum power point tracking which is typically associated with solar panels for optimizing their outputs with maximum efficiency. In this post we learn how to make a PIC16F88 microcontroller based MPPT circuit with a 3-stage charging.

Precision Capacitive Touch/Proximity Sensor Circuit Part 2

Jan 7, 2016

The previous post explained the datasheet of the precision capacitive touch/proximity sensor IC PCF8883, here we learn a typical circuit configuration using the same IC which can be applied in all products requiring precision remote touch stimulated operations.

Precision Capacitive Touch/Proximity Sensor Circuit Part 1

The IC PCF8883 is designed to work like a precision capacitive touch and proximity sensor switch through a unique (EDISEN patented) digital technology for sensing the minutest difference in the capacitance around its specified sensing plate.

Sinewave UPS Circuit using PIC16F72 Part-5

Jan 4, 2016

In this write-up we try to understand in detail regarding the various possible faults that could be encountered while constructing the proposed sinewave UPS circuit using PIC16F72. and how to troubleshoot these issues effectively through simple steps.

Sinewave UPS Circuit using PIC16F72 Part-2

In this post we study the mosfet switching stage built for the proposed sinewave UPS circuit using PIC16F72.

Sinewave UPS Circuit using PIC16F72 Part-3

In this submission we try to investigate the low battery and the overload protection stages as designed for the proposed sinewave UPS circuit using PIC16F72.

Sinewave UPS Circuit using PIC16F72 Part-4

In this page we learn specifically about the battery charging operations using PWM technique as configured for the proposed sinewave UPS circuit using PIC16F72.

Sinewave UPS Circuit using PIC16F72 Part-1

The proposed sinewave inverter UPS circuit is built using PIC16F72 microcontroller, some passive electronic components and associated power devices.

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