Electronics Area https://electronicsarea.com Electrical and Electronics Tutorials and Circuits Sun, 05 Jul 2026 01:47:15 +0000 en-US hourly 1 https://wordpress.org/?v=4.9.26 Autotransformer https://electronicsarea.com/autotransformer/ https://electronicsarea.com/autotransformer/#comments Fri, 26 Jun 2026 19:23:57 +0000 http://electronicsarea.com/?p=73 Autotransformer. How does it work? . Step-up, step-down. Applications. Advantages. Conventional transformer connected as an autotransformer.

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The post Autotransformer appeared first on Electronics Area.

]]> https://electronicsarea.com/autotransformer/feed/ 1 Transformer Turn Ratio (K) https://electronicsarea.com/transformer-turn-ratio/ https://electronicsarea.com/transformer-turn-ratio/#respond Thu, 25 Jun 2026 12:32:24 +0000 http://electronicsarea.com/?p=2963 3 ways to find the transformer turn ratio K. Using the winding number of turns, using electromotive forces, and using winding currents. The ideal transformer and the transformer turn ratio.

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The post Transformer Turn Ratio (K) appeared first on Electronics Area.

]]> https://electronicsarea.com/transformer-turn-ratio/feed/ 0 Diode Connected in Parallel to a Relay Coil – Relay diode https://electronicsarea.com/diode-connected-in-parallel-to-a-relay/ https://electronicsarea.com/diode-connected-in-parallel-to-a-relay/#respond Mon, 08 Jun 2026 19:19:29 +0000 https://electronicsarea.com/?p=4958 Purpose of the diode connected in parallel to a relay coil. Characteristics the diode should have. Example of operation: the relay is energized and de-energized.

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The post Diode Connected in Parallel to a Relay Coil – Relay diode appeared first on Electronics Area.

]]> https://electronicsarea.com/diode-connected-in-parallel-to-a-relay/feed/ 0 Doorbell for Deaf People Circuit using LEDs https://electronicsarea.com/doorbell-for-deaf-people-circuit/ https://electronicsarea.com/doorbell-for-deaf-people-circuit/#respond Sun, 07 Jun 2026 15:30:40 +0000 http://electronicsarea.com/?p=1208 Why use a doorbell for deaf people? A visual warning signal for a deaf person to know someone is knocking at the door. How the circuit works. List of parts.

The post Doorbell for Deaf People Circuit using LEDs first appeared on Electronics Area.

The post Doorbell for Deaf People Circuit using LEDs appeared first on Electronics Area.

]]> https://electronicsarea.com/doorbell-for-deaf-people-circuit/feed/ 0 Dielectric Constant & Capacitors (Table) https://electronicsarea.com/dielectric-constant-relative-permittivity-capacitor/ https://electronicsarea.com/dielectric-constant-relative-permittivity-capacitor/#respond Tue, 02 Jun 2026 17:38:10 +0000 https://electronicsarea.com/?p=6184 What is the Dielectric constant / Relative Permittivity? The dielectric constant is the ratio of the permittivity of a substance to the permittivity of free space. It is a dimensionless physical constant

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The post Dielectric Constant & Capacitors (Table) appeared first on Electronics Area.

]]> https://electronicsarea.com/dielectric-constant-relative-permittivity-capacitor/feed/ 0 Binary Number System – Decimal to Binary & vice versa – Videos https://electronicsarea.com/binary-number-system/ https://electronicsarea.com/binary-number-system/#respond Mon, 01 Jun 2026 16:52:33 +0000 http://electronicsarea.com/?p=1274 The binary number system only needs two (2) digits: "0" and "1". How to make the decimal to binary and binary to decimal conversion.

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The post Binary Number System – Decimal to Binary & vice versa – Videos appeared first on Electronics Area.

]]> https://electronicsarea.com/binary-number-system/feed/ 0 MOSFET Transistors – NMOS, PMOS https://electronicsarea.com/mosfet-transistors/ https://electronicsarea.com/mosfet-transistors/#respond Thu, 28 May 2026 21:00:45 +0000 http://electronicsarea.com/?p=437 MOSFET transistors, or Metal Oxide-Semiconductor (MOS), are field effect devices that use the electric field to create a conduction channel. MOSFET transistors are more important than JFETs because almost all integrated circuits are built with MOS technology.

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The post MOSFET Transistors – NMOS, PMOS appeared first on Electronics Area.

]]> https://electronicsarea.com/mosfet-transistors/feed/ 0 LM317 Variable Voltage Regulator Tutorial https://electronicsarea.com/lm317-variable-voltage-regulator-circuit-diagram/ https://electronicsarea.com/lm317-variable-voltage-regulator-circuit-diagram/#respond Mon, 25 May 2026 17:28:51 +0000 https://electronicsarea.com/?p=4193 LM317 characteristics. How the voltage regulator circuit works: Regulator circuit operation improvement

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The post LM317 Variable Voltage Regulator Tutorial appeared first on Electronics Area.

]]> https://electronicsarea.com/lm317-variable-voltage-regulator-circuit-diagram/feed/ 0 Adding a Tweeter to a Speaker https://electronicsarea.com/add-tweeter-baffle-speaker/ https://electronicsarea.com/add-tweeter-baffle-speaker/#respond Mon, 25 May 2026 17:26:50 +0000 https://electronicsarea.com/?p=8598 How to add a tweeter to a speaker. Very simple circuit, using only one potentiometer and two capacitors, very easy to install.

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The post Adding a Tweeter to a Speaker appeared first on Electronics Area.

]]> https://electronicsarea.com/add-tweeter-baffle-speaker/feed/ 0 5 to 30 Minute Timer Circuit using 7555 IC https://electronicsarea.com/5-to-30-minute-timer-circuit-7555/ https://electronicsarea.com/5-to-30-minute-timer-circuit-7555/#comments Fri, 22 May 2026 15:03:01 +0000 http://electronicsarea.com/?p=2313 This 5 to 30-minute timer circuit achieves times ranging from 5–30 minutes using the 7555 integrated circuit (CMOS version of the popular 555 timer).

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The post 5 to 30 Minute Timer Circuit using 7555 IC appeared first on Electronics Area.

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