Visitors Technical Articles

Analysis of the Tuggle Front End, Part I, by Ramon Vargas
Download Analysis of the Tuggle Front End in .doc format (101k).

Analysis of the Tuggle Front End, part II, by Ramon Vargas
Download Analysis of the Tuggle Front End, Part II in .doc format (302k).

Analysis of the Tuggle Front End, part III, by Ramon Vargas
Download Analysis of the Tuggle Front End, Part III (.doc 833k).

Directional Couplers by Ramon Vargas. (.pdf 98k)

A Low-Frequency Crystal Controlled Oscillator by Ramon Vargas (.doc 69k)

A Short Wave Regenerative Receiver, by Ramon Vargas (PDF File 127k)

Wien-Bridge oscillator has simplified frequency control, by Ramon Vargas (PDF File 316k)

Q Multiplication in the Wien-bridge OscillatorBy Ramon Vargas (PDF File 254k)

The James-Baxandall Passive Tone-Control Network by Ramon Vargas
DownloadThe_James-Baxandall_Passive_Tone_Control_Network.doc (550k)

Diode Charge Pump AM-FM Demodulators, By Ramon Vargas (PDF file 270k)

Optimal Loading of Audio Transformers for Crystal Set Use, By Ramon Vargas
Download Optimal Loading of Audio Transformers for Crystal Set Use.doc (230k)

Crystal Receivers for the MW-AM band, By Ramon Vargas (PDF File 205k)

Notes on Demodulation of AM Signals, By Ramon Vargas (PDF file 34k)

Bogen T-725 Revised Calculations, By Ramon Vargas (PDF file 209k)

Oscillations and Regenerative Amplification using Negative Resistance Devices , By Ramon Vargas (PDF file 265k)

Voltage Comparator and Q Multiplier make a stable Sine Wave Oscillator , By Ramon Vargas (PDF file 86k)

The Modern Armstrong Regenerative Receiver By Ramon Vargas. download (pdf file 38k)

Small Signal Calculation of a SW RF Stage updtd.pdf By Ramon Vargas (pdf file 151k)

Ferrite Rod Inductance By Dan McGillis (pdf file 146k)

Analysis and Applications of the Capacitive Transformer By Ramon Vargas (pdf file 137k)




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