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Archives for 2013

300 Watts PWM Controlled Pure Sine Wave Inverter Circuit

Last Updated on August 3, 2020 by Swagatam 122 Comments

pure sine wave inverter with 555 1

The following article which discusses a 300 watt pure sine wave inverter circuit with automatic output voltage correction, is a modified version of one of my previous posts, and was submitted to me by Mr. Marcelin. I have explained more about the converter implementations. The Design The idea was inspired by the design presented in this article […]

Filed Under: Inverter Circuits Tagged With: 300, Controlled, Pure, PWM, Sine, watts

How to Design an Inverter – Theory and Tutorial

Last Updated on August 3, 2020 by Swagatam 155 Comments

In this post I have explained the fundamental tips and theories which may be useful for the newcomers while designing or dealing with basic inverter concepts. I have explained more. What’s an Inverter It’s a device which converts or inverts a low voltage, high DC potential into a low current high alternating voltage such as […]

Filed Under: Inverter Circuits Tagged With: Design, Inverter, Theory, Tutorial

Simple RF Remote Control Circuit without Microcontroller

Last Updated on May 1, 2020 by Swagatam 303 Comments

In this article I have explained how to make a simple RF remote control circuit using ready-made RF 433MHz and 315MHZ RF modules, and without incorporating microcontroler ICs. With the easy availability of RF modules today making an RF remote control has become a childs play. It’s all about procuring the RF modules ready made […]

Filed Under: Remote Control Circuits Tagged With: Control, Microcontroller, Remote, RF, Simple, without

Non-Contact Cable Tracer Circuit

Last Updated on April 7, 2020 by Swagatam 13 Comments

noncontactcabletracercircuit

In this post I have explained a simple non-contact cable tracer circuit which can be used for locating faults in long wound cables and wire bundles without a physical contact. The Circuit Concept Why would you shred $100 to buy a cable tracer when it is easier to develop one spending less than $10! This […]

Filed Under: Sensors and Detectors Tagged With: Cable, Contact, Tracer

Long Range Transmitter Circuit – 2 to 5 Km Range

Last Updated on February 1, 2020 by Swagatam 179 Comments

DSC 0143

The proposed long range transmitter circuit really is very steady, harmonic free design which you can use with standard fm frequencies between 88 and 108 MHz. Technical Specifications of the Transmitter This will likely encompass 5km spectrum (long range). It includes an extremely consistent oscillator for the reason that you employ LM7809 stabilizer that is […]

Filed Under: Wireless Circuits Tagged With: Long, Range, Transmitter

Cellphone Low Battery Cut-off with Indicator Circuit

Last Updated on January 29, 2020 by Swagatam 65 Comments

lowbatteryindicatorcircuitforphonechargers

In this post I have explained a simple yet effective low battery cut-off with indicator circuit which can be integrated with cell phone/tablet charger battery packs in order to monitor and avoid battery draining below a set threshold. The idea was requested by Mr. David. Technical Specifications Hi Swagatam. I know it was asked before, […]

Filed Under: Sensors and Detectors Tagged With: Battery, Cellphone, Indicator

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