In this post I have explained how to build 4 interesting VU meter circuits, using LEDs and using a moving coil meter. What is a VU Meter VU meter or a volume unit meter circuit is a device used for indicating the music volume output from an amplifier or a loudspeaker system. It may be […]
Simple
Designing Simple Power Supply Circuits
In this post I have explained how to design and build a simple power supply circuit right from the basic design to the reasonably sophisticated power supply having extended features. Power Supply is Indispensable Whether it’s an electronic noob or an expert engineer, all require this indispensable piece of equipment called the power supply unit. This is because no electronics […]
Simple Triac Timer Circuit
Here’s a simple triac timer circuit which can be used for switching ON a particular device after a predetermined time, set through the given pot or the variable resistor. The shown circuit diagram of a simple triac timer can be understood by referring to the following explanation: How it Works The left hand side section […]
Simple Adjustable Industrial Timer Circuit
In this post I have explained a simple and effective industrial timer circuit which can be universally used for most industrial and home timer based applications. The idea was requested by Mr. Vasilis K. Technical Specifications I have a question regarding the 4060 ic wired as “one shot timer.” If it can power on the […]
Simple Automatic Plant Watering Circuit for Monitoring Soil Moisture
This automatic plant watering circuit can be used for automatically sensing soil humidity and triggering a water pump when the ground gets parched below a predetermined level (adjustable). Circuit Operation The circuit is rather straightforward and uses a single IC 555 as the main active component.Referring to the automatic plant irrigation circuit shown below we […]
Simple Shop Shutter Guard Circuit to Safeguard your Shop from Theft
The shop shutter guard circuit discussed here guards your shop when its shutter is closed i.e., at night if an intruder tries to break the shutter, the piezo senses the vibration and the relay is fired to which a 230 volt bulb can be connected which makes the intruder think that someone’s inside…..but he doesn’t […]