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DIY audio synthesizer aka electronic piano circuit

Frank Donald September 13, 2020 1 Comment

Synthesizer circuits are the ones which is capable of producing audio signals using electronics. Modern synthesizers are quite popular now a days as it provides a ease of producing quality music. You might have seen some similar synthesizer circuits like…
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Electronics, Projects

diy projects, FG

Metal detector circuit using inductive proximity sensor

Gadgetronicx Team September 4, 2020 1 Comment

Metal detectors are used to unearth or spot metal objects from various surfaces. Popularly these type of circuit uses Inductors and its inductive property to sense metal detection. However in this circuit we are using a dedicated proximity inductive sensor…
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Circuit diagrams and Schematic designs, Electronics, Sensor Circuits

buzzer

Touch activated office call bell circuit

Gadgetronicx Team August 31, 2020 0 Comments

Many of us are familiar with traditional office call bell that is used to alert assistants or other colleagues. It doesn’t have to this boring setup. Here is a simple circuit that can be used as an alternative to this…
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Alarm Circuits, Circuit diagrams and Schematic designs, Electronics

Comparator

+5V and -5V power supply circuit using 7805 and 7905

Gadgetronicx Team August 26, 2020 2 Comments

Linear voltage regulators are most popular due to their low price point and availability. 78xx is a popular series of linear voltage regulators that’s available for various output voltage ranges such as 5V, 6V,9V, 12V and so on. But there…
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Circuit diagrams and Schematic designs, Electronics, Power Circuits

voltage regulator

Germicidal UV lamp to kill virus and other pathogens

Frank Donald August 21, 2020 5 Comments

After COVID-19 we have come up with many ways to disinfect our hands, different surfaces in our homes and so on. This circuit is version two of Solar powered UV lamp project where it uses 5 UV-C LEDs which was…
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Circuit diagrams and Schematic designs, Electronics, Lighting Circuits

lamp, LED, mosfet

Important PCB grounding techniques to improve your design

Gadgetronicx Team August 18, 2020 0 Comments

Grounding in PCB boards holds special place as it can influence the performance greatly. A good time spent on grounding in your PCB design is never wasted. If you don’t focus on grounding the currents in your PCB then your…
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Electronics, PCB

Beat frequency indicator circuit

Gadgetronicx Team August 14, 2020 2 Comments

Beat frequency indicators are used to indicate whenever frequency of a signal of our interest exceeds reference frequency. This is one such indicator circuit which uses LED’s to indicate when our signal exceeds the reference frequency. These indicator circuits can…
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Audio Circuits, Circuit diagrams and Schematic designs, Electronics

Flip Flop, Logic gates, Verified Circuits/Projects

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