The post explains a simple yet very useful 0 to 50V dual power supply circuit which also includes a wide range current control feature right from 0 to 10 amps. The idea was requested by Mr. Tamam.
Jul 30, 2014
Contact mics can be used to sense unusual sounds when attached to various surfaces.It also Produce sound when voltage is applied to it.With the help of a basic Pre-amp circuit it can also be used to Electrify an Acoustic Guitar, where amplification is a must.
Jul 29, 2014
This simple circuit will enable you to visualize distant thunder lightning through a correspondingly choreographed LED flashes, exactly in accordance with the lightning that may be taking place somewhere in the distant sky, the response will be simultaneous and thus much prior to the sound that may reach your ears after a few seconds.
Jul 28, 2014
The following article presents a circuit design which would mute your car amplifier music the moment it detects a cellphone call inside the car, enabling an automatic muting during the situations, and saving the user from the manual hassles.
Jul 27, 2014
In few of my previous articles we discussed a handful of GSM remote control circuits using ordinary cell phones as the modem. All those designs incorporated the ringtone of the cell phone as the triggering signal. In this post we'll learn how the same could be achieved but by using the vibrator feature of the modem cell phone.
The post explains an innovative solution which could be used for pausing the counting process of a timer IC during power failures, and also restart the process when mains is restored, ensuring an uninterrupted functioning of the timer. The idea was requested by Mr. Arun Dev.
Jul 26, 2014
In this post we learn about a parallel battery charger with changeover circuit using SPDT switches to charge multiple batteries individually or collectively which may be connected in parallel using a single battery charger and through a manual SPDT changeover switch bank.
Jul 25, 2014
In one of the previous posts we learned the making of a greenhouse temperature controller circuit, here we study how the effects may be enhanced through an automatic water valve actuator and humidity controller circuits. The idea was originally requested by Mr. Leandros Komninos
Jul 23, 2014
The post explains the construction of a homemade 100 watt capacitive tubelight circuit using 1 watt LEDs. The idea was requested, constructed, tested and verified by one the avid readers of this blog Mr. Tamam. Let's go through the entire discussion.
Jul 21, 2014
The post discusses an LED controller circuit having a boost and dimming facility specifically designed for underwater shooting application. The idea was requested by Mr. Svein.
Jul 20, 2014
The post discusses a cool chasing LED light circuit that features a timed delay fading slow transition effect across the whole illuminated sequencing LEDs. The idea was requested by Mr. Tamam
Jul 19, 2014
Here we discuss a an emergency lamp circuit which includes an infrared remote operated brightness control feature. The idea was requested by Mr. Heeran
Jul 14, 2014
In the previous post we learned regarding the internal circuitry of a typical Bluetooth headset, in this post we'll see how the gadget can be modified or "hacked" in order to make it work for other personalized applications.
In this Arduino tutorial we’ll learn how to execute the tone() command for producing musical notes. The configuration will play a tiny musical tone that could be familiar to you.
Jul 9, 2014
Today the traditional wired type of doorbells are gradually getting obsolete and are being replaced by the advanced wireless type of doorbells that are easier to install due to their hassle free set-ups. A simple wireless doorbell circuit is discussed in the following post which can be constructed at home.
The post explains a simple water heater alarm circuit which may be used as a safety device for getting indications regarding the switched position of a water heater or a geyser through intermittent buzzer actuation. The idea was requested by Mr. Mathew.
Jul 6, 2014
One of the best substitutes for traditional light transformer for halogen bulbs is the electronic halogen transformer. It can also be used with non-halogen bulbs and any other form of resistive loads that does not run on RF current.
The ZSD100 is an alarm frequency generator IC which incorporates a frequency swept alarm signal generator designed solely for fixed and vehicle protection alarm systems.