Category: Electronics Projects

Low Power Alarm with Automatic Timer

Engineeering Projects
low power alarm with automatic timer circuit

Various types of alarm and sound generator circuit is already published in bestengineeringprojects.com. Now here is a alarm circuit which draws very low quiescent current and also does not need any type of power on off switch because this offers automatic switch-off after fixed time. Circuit Description of Low Power Alarm with Automatic Timer The heart of the circuit low power alarm circuit is 4060 IC, which is here configured as timer. The advantage of using IC 4060 (IC1) is the wide music range instead of UM series musical IC.…

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Smallest Radio Circuit Using Two Transistors

Engineeering Projects
circuit diagram of match box size radio

This small-size radio published is very interesting and useful for students. Using the circuit Smallest Radio Circuit Using Two Transistors described here, one can make a very compact MW radio receiver. This circuit uses only two transistors and a few passive components, as all the components can be easily placed in a small matchbox-size cabinet. Smallest Radio Circuit Using Two Transistors Coil L1 consists of 100 turns of 40 SWG insulated wire. Wind L2 over L1, which is 10 turns of the same wire. For L3, wind 56 SWG (approximately)…

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Mains box heat monitor using 555 Timer IC

Engineeering Projects
mains box heat monitor circuit

Here is a simple circuit mains box heat monitor for sensing high temperature due to overheating. This circuit helps to prevent disasters caused by only sparking in the mains box due to any fault as a short circuit overloaded. This circuit is so designed that it also automatically switches on a bright white LED (LED3) in case of power failure. This light is sufficient to check the mains box wring or fuses in darkness. Circuit Description Mains Box Heat Monitor The circuit is built around a timer IC, a sensor,…

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Light operated internal door latch

Engineeering Projects
mechanical arrangement for the lock

Previously, we have posted light controlled digital fan regulator, with which we can control the speed of the fan remotely from the bed with the help of a torchlight. Now, here is another light-operated project which can also operate remotely from the bed with a torchlight. The group electronics hobbyist at Best Engineering Projects designed and verified a very unique electronic circuit light operated internal door latch with which one can close or open the door of your room remotely.” Check out other security-related projects posted on bestengineeringproject.com Car Lock…

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Universal Digital Power Supply Circuit

Engineeering Projects
variable digital power supply unit

Various types of power supply circuits like fixed regulated, variable power supply, and stabilized power supply circuits are already published on bestengineeringproject.com. Most of us hear about the universal power supply, it is a power supply unit that provides almost all standard power supply. How’s that if we combine a universal power supply and a digital control technology. Here, the innovative group of Dreamlover Technology designed and verified a universal power supply circuit with the facility of digital control. The unit universal digital power supply provides a variable, fluctuation-free and…

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Stabilized Power Supply With Short-Circuit Indication

Engineeering Projects
stabilised power supply with short circuit indicator

Various power supply-based project is already posted on bestengineeringprojects.com. Now, here is a stabilized power supply circuit with the facility of short-circuit indication. As we know that stabilized power supply is used for testing various electronics circuits and is very important for electronics geeks or hobbyists. The circuit presented here is of a 5-stage stabilized power supply unit and it provides well-regulated output, which is essential for most electronics circuits for proper results. Another advantage of the circuit stabilized power supply with short-circuit indication has it provides an audio-visual indication…

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Mains line frequency meter circuits

Engineeering Projects
panel frequency meter circuit

Generally, the standard line frequency in some countries is 50HZ or in some countries 60HZ, which may vary from time to time. Due to this varying nature of frequency, sensitive equipment may start malfunctioning, and the requirement result we may not get. New here is a simple mains line frequency meter circuit designed and verified at BEP (Best engineering project) lab used to measure the frequency of AC mains. Circuit description mains line frequency meter circuit The circuit of the mains line frequency meter is built around timer IC2 (NE555),…

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Light Controlled Digital Fan Regulator Circuit

Engineeering Projects
light controlled digital fan regulator circuit

Mans are born of habit, and we all want comfortable. At night while sleeping we often switch of the light. But sometime we used to increase or decrease the speed of fan. And it is very difficult to trace the switch board in a dark room at night and to wake-up from bed is also irrigative. By keeping this problem in mind the group of electronics geek at Dreamlover technology designed and verified a electronics project called light controlled digital fan regulator circuit. You can also check this awesome project IR…

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Frequency Generator and Divider circuit

Engineeering Projects
circuit diagram of frequency divider

What are Frequency Generator and Divider Circuit? A frequency generator is a circuit that generates a frequency and a divider circuit divides the generated frequency with various factors to get different frequency values. Various assembled frequency generators and divider circuits are available in the market but they are quite expensive to buy. The group of electronics geeks at dream lover technology designs a low-cost square wave signal generator and divider circuit. The frequency of 1 Hz, 10 Hz, 100 Hz, 1 kHz, 100 kHz, and 1 MHz are obtained at…

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All in One Tester Circuit

Engineeering Projects
circuit diagram of handy tester

All in one multi-tester is quite expensive which may not affordable for every electronics beginner. Now, here is s cheap all-in-one tester circuit that can be used to test the condition of almost all the electronics components from the basic resistors to advance ICs. The circuit all in one tester is used to detect polarity, continuity, logic state, and also activity of multivibrator. Description of All in One Tester Circuit The circuit of the all-in-one tester is so simple that it can also understand by beginners. The circuit of all…

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