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Single Phase Variable Frequency Drive VFD Circuit

Last Updated on February 9, 2025 by Swagatam 314 Comments

In this post I have explained a single phase variable frequency drive circuit or a VFD circuit for controlling AC motor sped without affecting their operational specifications. What is a VFD Motors and other similar inductive loads specifically do not “like” operating with frequencies that might be not within their manufacturing specs, and tend to […]

Filed Under: Motor Controller Tagged With: Drive, Frequency, Phase, Single, Variable, VFD

3-Phase Signal Generator Circuit using Opamp

Last Updated on January 8, 2024 by Swagatam 116 Comments

Screenshot2014 11 2200.58.38

Many a times we find it crucial and handy to possess a true three phase signal for evaluating many different electronic configurations such three phase inverters, three phase motors, converters etc. Since it’s not so easy to incorporate single phase to three phase conversion quickly we find this particular implementation difficult to acquire and enforce. […]

Filed Under: Oscillator Circuits Tagged With: Generator, Opamp, Phase, Signal

Making a Parasite Zapper Circuit

Last Updated on January 2, 2024 by Swagatam 4 Comments

An interesting electronic parasite zapper circuit shown below was successfully built and tested by my friend Mr. Steven. I have explained more about the proposed circuit. The Circuit Idea Email received from Mr. Steven:”Hey swagatam did you see the latest pictures I put in my SkyDrive, 4060 integrated circuit type parasite zappers built before but […]

Filed Under: Pets and Pests Tagged With: Making, Parasite, Zapper

10 Step Relay Selector Switch Circuit Diagram

Last Updated on January 17, 2025 by Swagatam 131 Comments

electronicselectorswitchcircuit

In this post I have explained a simple yet useful 10 step selector switch circuit which can be operated using a singe push-to-ON switch. In the following design the circuit is used as a 3 step, single push motor speed controller unit. The circuit was requested by Mr.Edalcor. Technical Specifications hi sir good day to to you, can you please design […]

Filed Under: Mini Projects Tagged With: Relay, Selector, Step, Switch

Ultraviolet UV Water Filter/Purifier Circuit at Home

Last Updated on January 8, 2024 by Swagatam 14 Comments

The post describes an easy method of making an ultra violet water purifier circuit using ordinary electronic components. How UV is Used as Germicidal Ultraviolet germicidal irradiation (UVGI) is a water treatment method which employs UV or ultraviolet light rays in the range of short wavelength in order to eliminate the present pathogens and microorganisms. The technology involves […]

Filed Under: Health related Projects Tagged With: Filter, Home, Purifier, Ultraviolet, UV, Water

Single Phase AC to Three Phase AC Converter Circuit

Last Updated on January 8, 2024 by Swagatam 24 Comments

singlephasetothreephaseconvertercircuit

In this post I have explained an interesting single phase AC to 3 phase AC circuit. The idea was requested by Mr. Sachin Sinalkar. Technical Specifications Hi dear sir, is there any way by which we can convert single phase 230V supply into three phase. i had try to ask question on your web site […]

Filed Under: Grid and 3-Phase Tagged With: AC, Converter, Phase, Single, Three

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