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How Laser Microphones or Laser Bugs Work

Last Updated on January 20, 2021 by Swagatam Leave a Comment

A laser microphone is a security monitoring gadget in which a laser beam is used for detecting audio vibrations across faraway targets, which are normally walls or glass of homes […]

Filed Under: Security and Alarm

Automatic Light Sensitive Switch with Adjustable Dawn or Dusk Switching

Last Updated on January 20, 2021 by Swagatam 4 Comments

This automatic ON/OFF light switch features a selector switch which facilitates the lamp (load) either to switch ON during night and switch OFF during day, or the opposite, that is […]

Filed Under: Sensors and Detectors

RF Amplifier and Converter Circuits for Ham Radio

Last Updated on January 19, 2021 by Swagatam Leave a Comment

In this post we will discuss a few high frequency RF converter and preamplifier circuit designs which can be used for amplifying or enhancing the reception of an existing RF […]

Filed Under: Amplifiers

Simple FET Circuits and Projects

Last Updated on January 19, 2021 by Swagatam 4 Comments

The Field-Effect Transistor or the FET is a 3 terminal semiconductor device which is used for switching high power DC loads through negligible power inputs. The FET comes with some […]

Filed Under: Mini Projects

The Role of Inductor Coil in SMPS

Last Updated on January 14, 2021 by Swagatam Leave a Comment

The most crucial element of a switched mode converter or an SMPS is the inductor. Energy is stored in the form of a magnetic field in the core material of […]

Filed Under: SMPS

Modifying XL4015 Buck Converter with an Adjustable Current Limiter

Last Updated on January 5, 2021 by Swagatam Leave a Comment

The post explains a simple way to enhance the the XL4015 DC to DC buck converter with an adjustable current limiter, which seems to be missing in the original module. […]

Filed Under: Datasheets, Power Electronics, SMPS



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