Electronics Area https://electronicsarea.com Electrical and Electronics Tutorials and Circuits Thu, 22 May 2025 19:49:50 +0000 en-US hourly 1 https://wordpress.org/?v=4.9.26 PWM – What is Pulse Width Modulation? https://electronicsarea.com/pulse-width-modulation-pwm/ https://electronicsarea.com/pulse-width-modulation-pwm/#respond Fri, 16 May 2025 17:14:30 +0000 https://electronicsarea.com/?p=9205 PWM (Pulse Width Modulation) Pulse width modulation (PWM) controls the width of a digital signal to adjust the power delivered to certain devices. The width of the active pulse (“ON”) is modified to regulate the amount of current flowing to the device. How does pulse width modulation (PWM) work? It functions like a switch that [...]

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]]> https://electronicsarea.com/pulse-width-modulation-pwm/feed/ 0 High-Speed Electronic Fuse for Solid-state Circuits https://electronicsarea.com/high-speed-electronic-fuse/ https://electronicsarea.com/high-speed-electronic-fuse/#respond Sun, 11 May 2025 21:14:53 +0000 https://electronicsarea.com/?p=9198 The high-speed electronic fuse for solid-state device circuits operates in nearly one-hundredth of a microsecond, which is faster than an ordinary fuse.

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]]> https://electronicsarea.com/high-speed-electronic-fuse/feed/ 0 LM317T Current-limited 6V Battery Charger https://electronicsarea.com/lm317t-current-limited-6v-battery-charger/ https://electronicsarea.com/lm317t-current-limited-6v-battery-charger/#respond Thu, 08 May 2025 17:45:31 +0000 https://electronicsarea.com/?p=9175 This current-limited 6V battery charger uses the well-known LM317T regulator to control the maximum current at which a 6-volt battery can be charged.

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]]> https://electronicsarea.com/lm317t-current-limited-6v-battery-charger/feed/ 0 How do I test a Zener diode? – A simple method https://electronicsarea.com/how-test-zener-diode/ https://electronicsarea.com/how-test-zener-diode/#respond Tue, 12 Nov 2024 16:52:44 +0000 https://electronicsarea.com/?p=9153 Procedure to be followed when testing Zener diodes. How to find the voltage of an unknown zener diode

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]]> https://electronicsarea.com/how-test-zener-diode/feed/ 0 Equivalent transformer circuits (power, audio, video and RF) https://electronicsarea.com/equivalent-transformer-circuits/ https://electronicsarea.com/equivalent-transformer-circuits/#respond Thu, 31 Oct 2024 18:28:32 +0000 https://electronicsarea.com/?p=9144 Equivalent transformer circuits (power, audio, video and RF). Normally, in the designs and analysis where transformers are used, it is very common to use the characteristics of the transformer as if it were an ideal transformer.

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]]> https://electronicsarea.com/equivalent-transformer-circuits/feed/ 0 Wirewound Resistor https://electronicsarea.com/wirewound-resistor/ https://electronicsarea.com/wirewound-resistor/#respond Fri, 12 Jul 2024 16:07:24 +0000 http://electronicsarea.com/?p=20 A wirewound resistor is used when the power to be dissipated is very high. A wire wound resistor is usually coated with a layer of vitreous enamel.

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]]> https://electronicsarea.com/wirewound-resistor/feed/ 0 Light detector circuit using LDR (automatic night light) https://electronicsarea.com/light-detector-circuit-ldr/ https://electronicsarea.com/light-detector-circuit-ldr/#respond Fri, 28 Jun 2024 17:41:38 +0000 http://electronicsarea.com/?p=1912 This circuit activates a lighting device through a relay when the intensity of daylight is no longer sufficient. Good for illuminating the main entrance of the house, a display case that needs to be kept lit at night, an unsafe area at night, etc.

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]]> https://electronicsarea.com/light-detector-circuit-ldr/feed/ 0 The Decibel – Voltage Gain & Power Gain https://electronicsarea.com/decibel-voltage-power-gain/ https://electronicsarea.com/decibel-voltage-power-gain/#respond Thu, 27 Jun 2024 17:51:39 +0000 http://electronicsarea.com/?p=281 Voltage gain and Power Gain on an Amplifier - Explanation and formulas. The decibel expresses a ratio of quantities, not a quantity itself.

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]]> https://electronicsarea.com/decibel-voltage-power-gain/feed/ 0 Blown Fuse Indicator Circuit using one transistor https://electronicsarea.com/blown-fuse-indicator-circuit-using-one-transistor/ https://electronicsarea.com/blown-fuse-indicator-circuit-using-one-transistor/#respond Thu, 27 Jun 2024 09:13:58 +0000 http://electronicsarea.com/?p=1495 This single transistor blown fuse indicator circuit warns us by lighting a LED when there is a problem in an electrical installation protected by the fuse.

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]]> https://electronicsarea.com/blown-fuse-indicator-circuit-using-one-transistor/feed/ 0 Logic Probe using NOT Gates https://electronicsarea.com/logic-probe-using-not-gates-inverters/ https://electronicsarea.com/logic-probe-using-not-gates-inverters/#respond Tue, 25 Jun 2024 18:11:16 +0000 http://electronicsarea.com/?p=3554 A very simple logic probe using NOT gates. The logic probe allows us to know the logic state of any point in a digital circuit. The signal to be measured is applied to the probe tip input.

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