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 […]
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Timer Circuits with Auto Pause and Memory During Power Failures
In this post we try to investigate a couple of innovative solutions which could be used for pausing the counting process of a timer IC during power failures, and also […]
Parallel Battery Charger Circuits Explained
In this post we learn two methods of connecting batteries in parallel. The first one below deals with changeover circuit using SPDT switches to charge multiple batteries individually or collectively. […]
Greenhouse Motorized Water Diverter and Humidity Controller Circuit
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 […]
What’s Inside a Bluetooth Headset
In this post we will learn what’s inside a Bluetooth headset gadget and also know how to hack it for using it for other useful personalized applications. The world is […]
5kva Ferrite Core Inverter Circuit – Full Working Diagram with Calculation Details
In this post we discuss the construction of a 5000 watt inverter circuit which incorporates a ferrite core transformer and therefore is hugely compact than the conventional iron core counterparts. […]