The post presents a discussion regarding the troubleshooting of a 4047 IC based inverter output voltage drop problem on connecting a load. The solution was requested by Mr. Isaac Johnson. The Issue Good day sir, I am a reader of your blog and an electronics hobbyist. I constructed a square wave inverter with a filter […]
Newly Updated Circuit Projects:
0 to 50V, 0 to 10amp Variable Dual Power Supply Circuit
In this post I have explained a simple yet very useful 0 to 50V dual power supply circuit which will enable a full 0 to maximum dual voltage +/- control of the input power supply DC. It also includes a wide range current control feature right from 0 to 10 amps. The idea was requested […]
Make this DIY Contact MIC Circuit
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. Written and Submitted by: Ajay Dusa Piezoelectric Disc as the […]
Thunder Lightning Detector Circuit – LED Blinking in Response to Thunder
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. RF […]
Cellphone RF Triggered Car Amplifier Auto-Mute Circuit
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. A loud music could be a nuisance while a phone call is being attended or dialed. […]
Vibrating Cell Phone Remote Control Circuit
In few of my previous articles I have explained 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 […]