Electronics Area https://electronicsarea.com Electrical and Electronics Tutorials and Circuits Wed, 30 Apr 2025 19:06:44 +0000 en-US hourly 1 https://wordpress.org/?v=4.9.26 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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The post The Decibel – Voltage Gain & Power Gain appeared first on Electronics Area.

]]> 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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The post Blown Fuse Indicator Circuit using one transistor appeared first on Electronics Area.

]]> 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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The post Logic Probe using NOT Gates appeared first on Electronics Area.

]]> https://electronicsarea.com/logic-probe-using-not-gates-inverters/feed/ 0 Resistors in Series – The Equivalent Resistance https://electronicsarea.com/resistors-series-equivalent-resistance/ https://electronicsarea.com/resistors-series-equivalent-resistance/#respond Wed, 05 Jun 2024 21:23:19 +0000 https://electronicsarea.com/?p=8885 Series resistors are those that are connected in series and have the same current flowing or circulating through them

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The post Resistors in Series – The Equivalent Resistance appeared first on Electronics Area.

]]> https://electronicsarea.com/resistors-series-equivalent-resistance/feed/ 0 How to increase the output voltage of 78XX regulators? https://electronicsarea.com/increase-output-voltage-78xx-regulators/ https://electronicsarea.com/increase-output-voltage-78xx-regulators/#respond Thu, 23 May 2024 11:21:37 +0000 https://electronicsarea.com/?p=6520 How to increase the output voltage of 78XX regulators. How to use a zener diode to boost the output voltage on a 7805, 7809, 7812, 7815, ....regulators.

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The post How to increase the output voltage of 78XX regulators? appeared first on Electronics Area.

]]> https://electronicsarea.com/increase-output-voltage-78xx-regulators/feed/ 0 Mesh Current Method – Steps to follow – Example https://electronicsarea.com/mesh-current-method/ https://electronicsarea.com/mesh-current-method/#respond Thu, 16 May 2024 15:46:15 +0000 https://electronicsarea.com/?p=4917 The mesh current method is very useful for finding all the currents in a network. This method, a little more advanced, is also applied to circuits where there are resistances and reactances.

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The post Mesh Current Method – Steps to follow – Example appeared first on Electronics Area.

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