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w3Circuits
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0-50V 2A Bench power supply
An 0-50v bench power supply can be made using electronic diagram below which is designed using LM10 op amp and 2n3055 transistors. 50V Bench Power Supply Circuit Diagram: This LM10 2n3055 50v bench power supply allows an output voltage regulation in a range...
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Temperature Sensor Circuit using 1N4148 diode
There are components that have special characteristics, one of them is the 1N4148 diode, it is a diode High-speed, and its switching speed is 4th, its voltage is 100 V and current of 450 mA. It besides a diode 1N4148 is used as the temperature sensor, that ...
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Transformerless 5 Volt DC Power Supply
An increasing number of appliances draw a very small current from the power supply. If you need to design a mains-powered device, you could generally choose between a linear and a switch-mode power supply. However, what if the appliance’s total power consum...
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Door Opening Alarm with Sound Alert
The door opening alarm circuit or “Front Office Visitor Alert” is used for alerting you when a customer is at your office/shop. It will produce a beep sound when each new customer or visitor is entering, and will automatically switch OFF after few seconds. ...
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Audio Lm 3909 IC-Conduction Tester
This tiny conductivity tester works with LM 3909. The tester makes a beeping sound if the resistance between the test probes between 0 and 100 O lies. Due to the volume of the beep, the resistance between the test probes can be determined. Audio Lm 3909 IC-...
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Simple Long-Range IR Transmitter
Most of the IR remotes work reliably within a range of 5 metres. The circuit complexity increases if you design a long range IR transmitter for reliable operation over a longer range, say, 10 metres. To double the range from 5 metres to 10 metres, you need ...
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Simple Sound Processor
Simple Sound Processor presented here is an ultra-simple circuit module suitable for almost all basic electronics and microcontroller projects. For example, this module can be used as a front-end in an electronics project to detect and process ambient sound...
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Amplifier Using BEL1895 I.C
Here is a very simple and easy to use audio amplifier using I.C BEL(Bharat electronics limited)1895 , a very common IC. This circuit can run on 3V to 6v, making it easy to use in pocket amplifier. Cost is under 25/- Amplifier Using BEL1895 I.C: Parts list: ...
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250 to 5000 watts PWM DC/AC 220V Power Inverter
Here is Simple Electronic Circuit Project of   250 to 5000 watts PWM DC/AC 220V Power Inverter Circuit Diagram. This is my schematic design of a Pulse Width Modulator DC/AC inverter using the chip SG3524 . I have built this design and using it as a backup t...
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Micro Inverter circuit DC voltage AC 12v x110v
This is a micro-inverter DC voltage to AC from a 12v battery can generate a voltage of 110 or 220 volts AC and a frequency of 50Hz to 60Hz. Micro Inverter circuit DC voltage AC 12v x110v Circuit Diagram: The circuit is very simple and does not need a printe...
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