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Circuits

Product Designs published by me(partial list)

  1. 12V, 3A Power Supply using CA3085 – EFY Magazine October 2001 & EFY Electronics Projects Vol.22 – Edition 2006.

  2. Condenser Mic Audio Amplifier – EFY Magazine December 2001 & EFY Electronics Projects Vol.22 – Edition 2006.

  3. 5.5MHz/10.7MHz IF-FM Signal Generator EFY Magazine March 2002 & EFY Electronics Projects Vol.23 – Edition 2007.

  4. FM Band Receiver using TV Audio IC CA1190 EFY Magazine April 2002 & EFY Electronics Projects Vol.23 – Edition 2007

  5. 40-metre CW Transmitter – EFY Magazine May 2002 & EFY Electronics Projects Vol.23 – Edition 2007

  6. Crystal-Controlled VFO for 40m Amateur Radio EFY Magazine December 2002 & EFY Electronics Projects Vol.23 – Edition 2007

  7. Measuring Rigs and Add-ons for Radio amateurs – EFY Electronics Projects Vol.23 – Edition 2007

  8. LED/Diode Tester – EFY Electronics Projects Vol.23 – Edition 2007

  9. Cell Phone Call IndicatorEFY Electronics Projects Vol.23 – Edition 2007

  10. Offset Tuning Indicator for CW – EFY Magazine 2004 & EFY Electronics Projects Vol.25 – Edition 2010

  11. Simple EL Lamp Driver – Circuit Cellar Magazine – February 2003

  12.  Simple FM Receiver – EFY Magazine – June 2003
  13.  7 Mhz AM/CW Transmitter – EFY Magazine

 

My contributions in Elector Electronics Magazine during 2000s – link

1-07-2004 | Given favourable radio wave propagation, the shortwave and radio amateur band are chock-a-block with SSB (single-sideband) transmissions,…

1-07-2004 | This is a simple NiCd battery charger powered by solar cells. A solar cell panel or an array of solar cells can charge a battery at more…

1-07-2004 | Here is a high performance RF amplifier for the entire VHF broadcast and PMR band (100-175 MHz) which can be successfully built without any…

1-07-2004 | The 32-kHz low-power clock oscillator offers numerous advantages over conventional oscillator circuits based on a CMOS inverter.

1-07-2004 | By configuring a comparator and a transistor to control the oscillator in a charge pump circuit, you enable the pump to generate a regulated…

1-12-2003 | Tiny white LEDs are capable of delivering ample white light without the fragility problems and costs associated with fluorescent backlights…

 

My contributions as columnist in Infocentral Column published in Popular Communication magazine during the years 2004 to 2012.