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Temperature Sensing Alarm Circuit using Buzzer

Last updated on 28 March 2026 by Admin-Lavi Leave a Comment

We already see many temperature detector circuits in out previous blogs, but in this project we show a simple temperature detector circuit, here we use LM335 temperature sensor as good sensor IC and TL071 op-amp IC as comparator. Now, the circuit senses temperature and then gives alert using buzzer when temperature crosses set level, so […]

Filed Under: Alarm Circuits, Heater and Temperature Controllers, Sensors and Detectors

Car Engine Heat Detector Circuit with Sound Alert

Last updated on 28 March 2026 by Admin-Lavi Leave a Comment

Like in previous post on Automobile Engine Overheat Alert Circuit using LED, where driver gets indication through LED, but in this circuit, driver gets alert through sound and this sound comes from IC 555, which works as astable multivibrator and generates sound signal, also we can adjust temperature level for alarm using variable resistor which […]

Filed Under: Alarm Circuits, Automobile Circuits, Heater and Temperature Controllers, Indicator Circuits, Sensors and Detectors

Automobile Engine Overheat Alert Circuit using LED

Last updated on 27 March 2026 by Admin-Lavi Leave a Comment

Many a times, automobile engine heat problem has become very common, engine gets too hot and driver is not aware of it early, because of this, engine damage can happen and repair cost becomes high, so we need simple system which can give early warning. This project shows a small and low cost heat alert […]

Filed Under: Automobile Circuits, Heater and Temperature Controllers, LED and Lamps, Sensors and Detectors

External Current Booster Circuit using Transistor and MOSFET

Last updated on 26 March 2026 by Admin-Lavi Leave a Comment

First, every electronic project start small, but sometimes current is not enough, so many circuits work fine at 500mA, however real loads like motors, leds and power modules need more current, so instead of redesign full system, we can just boost current using a smart add-on circuit. Next, this External Current Booster Circuit using Transistor […]

Filed Under: Power Supply Circuits, Transistor Circuits

Simple 12V Protection and Soft Start Circuit

Last updated on 26 March 2026 by Admin-Lavi Leave a Comment

There are few protection circuit which we have shown in our previous post, but this article is for Simple 12V Protection and Soft Start Circuit for 12V systems. It helps to protect our load from sudden high current and voltage spikes and also, it gives a smooth start when power turns ON, because of this, […]

Filed Under: Security and Protection, Transistor Circuits

LM350 Based 24V 3A Voltage Regulator Circuit

Last updated on 25 March 2026 by Admin-Lavi Leave a Comment

This project shows about an easy and simple LM350 Based 24V 3A Voltage Regulator Circuit. The circuit converts AC mains into stable DC output, and also this design suits small lab use, battery charging and general electronics work. Moreover, LM350 gives adjustable output with good current capability, therefore by adjusting potentiometer we can get around […]

Filed Under: Power Supply Circuits

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Recent Posts

  • Temperature Sensing Alarm Circuit using Buzzer
  • Car Engine Heat Detector Circuit with Sound Alert
  • Automobile Engine Overheat Alert Circuit using LED
  • External Current Booster Circuit using Transistor and MOSFET
  • Simple 12V Protection and Soft Start Circuit

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