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Sound Decibel Meter Circuit

Last Updated on January 10, 2018 by Admin Leave a Comment

decibel

The sound decibel meter circuit shown underneath reacts to audio air pressure concentrations from approximately 60 to 70 dB. The sound is sensed by an eight ohm loudspeaker, intensified by […]

Filed Under: Meter and Tester Circuits Tagged With: Decibel, Meter, Sound

AC Mains Current Detector Circuit

Last Updated on January 4, 2021 by Admin 2 Comments

mains

This AC mains current detector circuit identifies current levels within one of the AC mains supplies with the aid of an inductive pickup sensor (L1) made using a one inch […]

Filed Under: High Voltage, Sensors and Detectors Tagged With: AC, Current, Detector, Mains

Simple 1 Watt LED Driver Circuit

Last Updated on January 10, 2018 by Admin Leave a Comment

BUCK CONVERTER

Here is an illustration of this efficiently operating a Simple 1 Watt LED Driver Circuit from a 12 volt battery power implementing a buck converter. The LED may perhaps plainly […]

Filed Under: Lights and Lamps Tagged With: Driver, LED, Simple, watt

Small Transistor Amplifier Circuit

Last Updated on June 6, 2025 by Admin 1 Comment

transistor amplifier

The following is a small transistor amplifier circuit much like you will probably find in a compact transistor car radio. The source stage is biased to ensure the source voltage […]

Filed Under: Audio and Amplifier Tagged With: Amplifier, Small, Transistor

Buck Solar Charger Circuit Using IC TL494

Last Updated on February 17, 2018 by Admin Leave a Comment

SMPSchargercircuit

The following simple yet, improved, TL494 zero drop buck solar battery charger circuit works extremely well together with almost any solar panel intended for charging cellphones or cell phone battery […]

Filed Under: Solar Controller Circuits Tagged With: Buck, Charger, Solar, TL494

Increasing LM317 Current with a Transistor

Last Updated on January 10, 2018 by Admin Leave a Comment

lm317

Increasing LM317 Current with a Transistor could be implemented in order to contribute an integral part of the overall current. The level of current contribution is ascertained using a resistor […]

Filed Under: Power supply Tagged With: Current, Increasing, LM317, Transistor

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