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The article presents suggestions for making do-it-yourself (DIY) Programmable On and Off Controller for 3-Phase Electric Motor. It also presents list of parts comprising of semiconductors, resistors and capacitors. It adds the programmable time switches in the system for setting the starting and stopping times of the motor and two control circuits.

The article offers suggestions for designing and analysis of single-stage transistor audio amplifier by using the C++ programming language. It mentions that the requirement for designing the electronic circuit such as amplifier, oscillator and power supply. it also mentions that formulas required to calculate the various parameters such as values of resistors, coupling capacitor, bypass capacitor and power consumption.

Several letters to the editor are presented in response to articles in previous issues including 'LED Voltmeter' by Raj K. Gorkhali in July 2012 issue, '1kW Sinewave Inverter' construction project' by R.V. Dhekale in November 2012 issue and 'Arduino-based RF Controlled Robot' in December 2012 issue.